530 PBOCEEDINGS OF THE NATIONAL MUSEUM. 



doubt that Stimpson's species is the same as the cuhensis of von Mar- 

 tens. One of von Marten s's types, a half- grown specimen, I have com- 

 pared with the specimen of equal size in the museum of the Philadel- 

 phia Academy, from Cuba, labeled by Dr. Ortmann JE. gilmanii (Smith), 

 and find them identical.' To U. cuhensis von Martens, Dr. Ortmann 

 gives the name U. haytensis Eathbun, considering them synonymous; 

 but the identity of the species is disproved by the fact that a specimen 

 of true E. haytensis Eathbuu in the museum of the Philadelphia Acad- 

 emy is labeled '■'• Potamocarcinus sinuatifrons (A. Milne-Edwards)."* 

 This specimen agrees with the one figured in Proceedings of the TJ. S. 

 National Museum, 1893.^ Moreover, it is impossible for species to be 

 synonymous which have maxillipeds so different in shape as those 

 shown in figures 5 and 6 of the plate cited. 



The specimens of E. haytensis Ortmann,'* from Guantanamo, Cuba, 

 are E. arniata Smith. I have compared them directly with one of the 

 types. The locality of the type specimens is unknown, though thought 

 by Professor Smith to be the Bahamas. It is not, however, known that 

 any of the Pseudothelphusin* inhabit the Bahamas. E. cuhensis is 

 quite convex and evenly so, both in an antero posterior and a transverse 

 direction. E. armata is less convex, the cervical suture deeper, the 

 tubercles of the superior frontal margin are very prominent and form 

 a distinct ridge, well marked in the young male as well as in the adult 

 female, which measures 29.8 by 46.6 mm., with the superior width of 

 the front 13 mm. The outer angle of the orbit has one or two promi- 

 nent spiniform tubercles, and the teeth of the anterolateral margin are 

 spiniform. There are, however, tubercles or granules near the lateral 

 margins of the carapace which are wanting in the types, these being- 

 much larger specimens than the female in the Philadelphia Academy. 



The six species of Epilohocera may be divided into two groups, accord- 

 ing to the form of the merus of the endognath. In the first grouj) belong 

 those species having the merus very broad and regularly arcuate from 

 the postero-external angle to the insertion of the palpus; the second 

 group includes those species having the merus narrower and subquad- 

 rate, the outer margin forming a blunt angle with the distal margin. 

 E. armata, cuhensis, granulata, and gilmanii belong to the first group. 

 E. gilmanii is set apart from the others by its much narrower and more 

 convex carapace, more advanced front, projecting considerably beyond 

 the line of the outer orbital angles and by the smoothness of the front. 

 E. armata and cuhensis are of about equal width, small specimens being 

 narrower proportionally than large ones. The difference between these 

 two species is given in a preceding paragraph. E. granulata, founded 

 on young si:»ecimens, is much wider than either of its allies, and its 

 frontal crest is strongly marked, as in young armata. The inferior 

 margin differs from that of armata in being sinuous and in projecting 

 beyond the superior. 



' See Zool. Jahrb., X, p. 323. » Vol. XVI, pi. Lxxvii, figs. 4, 5. 



2 Zool. Jahrb., X, p. 318. •* Zool. Jahrb., X, p. 322. 



