Page:The Zoologist, 1st series, vol 1 (1843).djvu/225

Rh tion. The posterior branch has three articulations, sending off one long seta from the first and second, and three from the last; these articulations are somewhat serrated on the edges, and the long setae are all finely plumose and jointed about the middle of their length. The antennae are very large and long, projecting straight out from the beak, and terminated by several short setae. The tail terminates in a sort of articulation at the extremity, which has eight short spines on its under edge, and two long stoutish claws at its extremity. The two setae on the tail are long, plumose and jointed. This species is not so very active as some others of the genus, owing perhaps partly to its form. It has a great many young.

Antennæ rather long, clothed exteriorly with appressed setae, bipectinate, the pectinations long, and fringed with delicate setæ.

Thymara Zaida.

Palpi (?). Eyes large, prominent. Anterior wings trigonate; costal nervure straight, attaining the cos. ta considerably beyond the middle; subcostal nearly parallel with the costal nervure, bent downwards beyond the middle, so as partly to close the discoidal cell, from which portion two nervules are thrown off to the outer margin, whilst the third proceeds in a direct course to the costa just before the apex; median nervure four-branched, the nervules attaining the outer margin at about equal distances: discoidal cell divided longitudinally by a false nervure, which bifurcates at its extremity, one fork striking the disco-cellular curve of the sub- costal, the other the median nervure above and beyond the point where the second nervule from the base is thrown off, thus closing the discoidal cell: radial nervure