660 BULLETIN 54, UNITED STATES NATIONAL MUSEUM, 



PSEUDARMADILLO CARINULATUS saussure. 



]'x,'iitlariiM(lill<> c'lfiiinlutux S.vrssrHK, Revue et Ma^asin <U- Zoologie (2), IX, 



1857, p. 308; Mem. tie la Soc. tie Physique et d'Hist. nut. <le Geneve, XIV, 



1858, Pt. 2, ]). 483, pi. v, figs. 43-43a. BuuuE-LuNi>, Crust. Isop. Terrestria, 

 1885, pp. 41-42. RICHARDSON, Proc. U. S. Nat. Mus., XXIII, 1901, p. 572. 



Locality. Mexico or Cuba, 



Body rugose, tuberculated; the last segment of the thorax strongly 

 tuberculated; abdomen ornamented with a median series of tubercles. 

 Inferior margin of the head forming three rounded lobes, project- 

 ing in front, the median one of which is the largest and a little more 

 in advance of the lateral ones, which are obliquely directed. The 

 uropods are rather deformed. Their second article, seen from below, 

 presents near the base a kind of transverse ridge; it becomes larger 



toward the end and terminates in a large 

 border, the two extremities of which are 

 rounded instead of forming angles. The in- 

 ner margin of this article is thickened, in 

 such. a way as to offer a small surface some- 

 what excavated, and separated from the in- 

 ner surface by a prominent, distorted ridge. 

 At the base of this surface one sees a little 

 lamella attached to it, which is probably the 

 inner branch of the uropoda. Above, the 

 second article appears in the form of a band, 

 which is placed along the lateral margin of 

 the segment; this band is a little distorted 

 and elevated above, especially at its anterior 

 extremity, where it is also a little larger; 

 at its posterior extremity it forms an angle, 

 which is the inner angle of the margin of 

 the uropoda, to which is articulated the 

 third article, which is very small The last abdominal segment is in 

 the form of a truncated triangle, not extending beyond the extremity 

 of the uropoda, and which is separated from them a little; its lateral 

 margins are not straight, but a little sinuated. The body is very 

 rough, all covered with little tubercles, rugose. The head is bor- 

 dered anteriorly with a transverse elevation furnished with a line of 

 tubercles. The first thoracic segment is all covered with rugosities, 

 except at the sides, which are produced backward in the form of 

 a large rounded process, the inferior margin of which is elevated 

 in such a way as to. form a concave surface. The other segments are 

 entirely rugose, except on the anterior half, which is smooth for articu- 

 lation; their inferior extremities are produced backward in the form 

 of narrow processes, a little elevated, less rugose, and carrying above 

 a projecting longitudinal line, which is still to be seen on the third 



PlG. 702. PSEUDARMADILLO CARIN- 

 ULATUS (AFTER SAUSSURE). a, 

 HEAD AND FIRST SEGMENT OF 

 THORA\. b, ABDOMEN AND URO- 

 PODA. (ENLARGED.) 



