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 A HISTORY OF NORFOLK ATTIDiE The spiders of this family may be recognized in a general way by their mode of progres- sion, consisting of a series of leaps, when alarmed. More particularly they may be known by the square shape of the cephalic region and the fact that the eyes are arranged in three rows of 4, 2, 2 ; the centrals of the anterior row being much the largest and usually iridescent. Otherwise these spiders are simply specialized Cluhionids, with two tarsal claws and other minor characters possessed in common with members of this latter family. The commonest, Salticus scenicus, will be well known to all observers, running and leaping on the walls of houses in the bright sunshine. 43. Euophrys frontalis (Walckenaer). (O. P.-C.) ; West Runton, Holt, Scratby (H. W. F.) ; Norwich (F. P. S.). Abundant in most districts. 44. Hellophanus cupreus (Clerck). (O.P.-C.) ; West Runton, Salhouse (H.W.F.). 45. Salticus scenicus (Clerck). (O. P.-C.) ; West Runton, Salhouse (H. W. F.) ; Norwich (F. P. S.). This spider is also known as Epiblemum scenicum. 46. Salticus cingu/atus (Panzer). (O. P.-C). Also known under Hentz's generic name Epiblemum. 47. Marptusa muscosa (Clerck). (O. P.-C.) ; Norwich (F. P. S.). One of the largest and most beautiful of our jittida, often abundant under the bark of old wooden palings, or among the loose stones of walls, such as those which cross the down- lands. 48. Attus puhescens (Fabricius). Norwich (F. P. S.). 49. Attus caricis, Westring. (O. P.-C.) ; Merton Hall (Lord Walsingham). Very rare ; both sexes found on rushes in a marshy spot. 50. Ergane falcata (Clerck). Norwich (F. P. S.). 51. Dendryphantes hastatus (Clerck). (O. P.-C.) ; Drayton Drewray (F. Edwards). PISAURIDiE Spiders with eight eyes in three rows, and three tarsal claws. The first row of eyes consists of four small eyes which are sometimes in a straight line, sometimes recurved and sometimes procurved. Those of the other two rows are situated in the form of a rectangle of various proportions. Pisaura runs freely over the herbage carrying its egg-sac beneath its sternum, while Dolomedes is a dweller in marshes and swamps. 52. Pisaura mirabilis (Clerck). (James Edwards) ; Norwich (F. P. S.) ; Cromer, Ormesby Broad and West Runton (H. W. F.). Known also as Dolomedes, or Ocyale, mirabilis. LYCOSIDiE The members of this family also have eight eyes, similarly situated to those of the Pisaurid^, but the first row is straight. Tarsal claws three. The spiders are to be found running freely on the ground and carrying their egg-sac attached to the spinners. Many of the larger species make a short burrow in the soil and there keep guard over the egg-sac. 53. Lycosa ruricola (De Geer). Norwich (F. P. S.) ; Watton (H. W. F.) ; Mousehold Heath and Ridgland (J. Ed- wards). A very common species. The male has a claw at the end of the palpus. 54. Lycosa terricola (Thorell). (O. P.-C.) ; Norwich (F. P. S.)!; Watton (H. W. F.). Also very common. The male has no claw at the end of the palpus. 55. Lycosa spinipalpis, F. P. -Cambridge. Ormesby Broad (H. W. F.). Females only have been taken of this rare species ; the males may be known by the cluster of spines beneath the tibia of the pal- pus. These three species are also known under the generic name Trochosa. 56. Lycosa leoparda (Sundevall). (O. P.-C.) ; Ormesby Broad (H. W. F.). 176