522 BULLETIN 129, UNITED STATES NATIONAL MUSEUM 



65 and 86 fathoms; types, Cat. No. 7308, U.S.N.M.); Rept. U. S. 

 Commr. of Fish and Fisheries for 1885 (1886), p. 628 [24], pi. 2, fig. 2. 

 Lambrus ponstalesi [error for pourtalesi] Gundlach and Torralbas, An. 

 Acad. Habana, vol. 36, 1899 (1900), text-fig. on p. 302; reprint, 1917, 

 pl. [2], fig. 4. 



Diagnosis. — Carapace high; regions deeply separated; two large 

 marginal spines, one at lateral angle and one at end of branchial 

 ridge. Arms not flat above. Dactyli of legs furred. 



Description. — Carapace broadly ovate-triangular, convex, the 

 branchial regions rather deeply separated from gastric, cardiac, and 

 hepatic regions; the longest spine is at the postero-lateral angle, and 

 has one or two spines at its base; this is not the widest part of the 

 carapace; hepatic margin armed with a small but prominent spine; 

 antero-lateral margin after the cervical suture convex and armed with 

 eight or nine teeth and spines, the first three or four shorter than the 

 next five; post-lateral margin armed with three or four unequal spines 

 besides the large one on the ridge; posterior margin with three larger 

 and several smaller spines. General surface pitted and granulated 

 and covered especially in the elevated parts with granulated tubercles 

 of various sizes; the largest ones are disposed as follows: Four on me- 

 dian line, of which one is gastric, one genital, and two cardiac; two 

 on branchial ridge in line with longest lateral spine. In the branchio- 

 cardiac depressions there are two smaller tubercles on each side form- 

 ing a rectangle ; there is a tendency to form several rows of tubercles 

 on branchial regions. Front with a long narrow obtuse tooth with 

 a denticle on each side, a subacute basal tooth, and below and out- 

 side the latter, a short spine. Lower surface granulated and tuber- 

 culated 



Chelipeds long and very rough, armed with laciniated teeth and 

 spines; merus convex above and bearing a row of unequal spines, 

 posterior margin armed with four or five large spines on proximal 

 half, one near distal end, anterior margin with four or five larger 

 spines and several smaller; the wrist has its largest spine at inner 

 angle; hand with about 10 or 12 triangular spines on outer margin 

 and 8 or 10 on inner margin, broader than those on outer, particularly 

 toward fingers. Merus joints of legs spinulous and also carpus and 

 propodus of last pair; dactyli furred. A tubercle on the sternum at 

 base of cheliped and each of legs 1-3. A large tubercle in middle of 

 each of second to sixth abdominal somites, and a conical tubercle at 

 extremity of segments 2 and 3. 



Color. — Palms pinkish brown with suggestion of banding. (Hen- 

 derson.) 



Measurements. — Male (48883), length of carapace 36.3, width of 

 same 47, length of cheliped 122 mm. 



