Page:Wood 1865 - The Myriapoda of North America.djvu/58

Rh short hairs. Its border is rather deeply emarginate. The eyes are in triangular patches, and are quite prominent. The antennae are rather long, filiform, pilose, and not at all clavate. The first scutum has its transverse diameter scarcely equal to that of the head. The anterior portion of its surface is smooth, the posterior strongly carinate. The surface of the other scuta is divisible into three regions. The anterior of these is the broader, and is strongly and closely keeled. The middle is the least in size, and is ornamented with closely set small keels, entirely evanescent on the sides. The posterior is not at all keeled, but is chased with curved, impressed lines. The keels at the position of the lateral pores are much enlarged and thickened. On the surface above them there are about seventeen keels to a segment. The last scutum is not at all pointed. The posterior portion of the body is more or less pilose. The preanal scale is broadly triangular.

The female appendages appear to consist of a pair of somewhat conical flattened bodies, with rounded summits, surmounted by a curved, rather thick, process, which springs from the base. The male appendages (Fig. 25) consist of two basal, irregular pieces, closely conjoined, and two processes arising from each of them. The smaller of these is short, broad, rather straight and acute at its end. The larger is composed of two parts. The shaft is irregular and proximally curved at right angles to itself; from its distal end proceeds at a sharp angle a curiously curved, somewhat spoon-shaped, portion; from near the point of junction of these arise a pair of subcylindrical, nearly parallel, curved processes. One of these is frequently distally bifid.

Mr. Say, in his description of lulus lactarius, uses the following expression: "Eyes triangular, granulated, deep black." In the Annals and Magazine Nat. Hist., vol. xiii, p. 266, Mr. Newport states that there were in the British Museum the original specimens sent by Mr. Say to Dr. Leach as Iulus lactarius, and that their eyes were arranged in linear patches. He there indicates a new genus, under the name of Cambala, with Iulus lactarius, Say, for its type, and characterizes it by its linear eye-patches. On the other hand, Mr. Brandt (Recueil) identifies certain specimens with triangular eye-patches in the Museum at Berlin as I. lactarius of Say. M. Gervais, reviewing this, concludes that Mr. Newport must have been mistaken, that his Cambala lactarius is not I. lactarius of Say. I have seen very numerous specimens from different localities agreeing in all respects with Mr. Say's description, but never one with linear eye-patches. Again, I find that Mr. Newport's description of Platops lineatus coincides with the specimens which I identify as I. lactarius of Say. Now, can there be any doubt that, through the carelessness of some one, the label had been transferred to the bottle of specimens which Mr. Newport studied, and that really his P. lineatus was founded on the type specimens of Say's vol. xiii.—25