72 THE BRACHYURA. 



Euphylax dovii Stimpson. 



Euphylax dovii Stimpson, Ann. Lye. Nat. Hist. N. Y., 1860, 7, 226, pi. 5, fig. 5. 

 Euphylax dovii A. Milne Edwards, Miss. Sci. au Mexique, 1879, 204, pi. 38, fig. 2. 



Off Gulf of Panama, lat. 7° 15' N., long. 82° 8' W., surface, station 4619, 

 Oct, 20. 1904; 1 9- 



INACHIDAE. 



Acanthonyx petiverii Milne Edwards. 



Acanthonyx petiverii Milne Edwards, Hist. Nat. Crust., 1834, 1, 343. 

 Acanthonyx Petiveri A. Milne Edwards, Miss. Sci. au Mexique, Zool., 1878, part 5, 1, 143, 

 pi. 27, fig. 7, and synonymy. 



Perico Id., Panama; Oct. 26, 1904; 1 <?. 



Pelia paciflca A. Milne Edwards. 



Pelia pacifica A. Milne Edwards, Miss. Sci. au Mexique, Zool., 1875, 1, part 5, 73, pi. 16, 

 6^3. Not Pelia pacifica Rathbun, Proc. U. S. Nat. Mus., 1893, 16, 90. 



Perico Id., Panama; Oct. 26, 1904; 1 S, 2 9. 



An examination of the specimens from the same locality as the type 

 (Bay of Panama) leads me to believe that the specimens that I have hitherto 

 assigned to P. pacifica are a distinct species. The specimens from Perico 

 Island are very short and broad ($, length 8.5, width 6.4 mm.) and have 

 very short horns, and in the £ the palms much enlarged and fingers gaping 

 at base. 



The other form, which extends from Santa Catalina Id., Cal., probably to 

 Magdalena Bay, L. Cal., is longer and narrower (<?, Southern Calif, length 

 13.4 mm., width 8.5 mm.), the horns longer, and the palms of the <? only 

 slightly enlarged, tapering distally, fingers not gaping. I venture to give a 

 new name to this form — P. claum — the type being a <? from a lot collected 

 in Southern California by Dr. W. H. Dall (Cat. No. 16203, U. S. N. M.) 



One specimen, a 6* , from off Magdalena Bay, L. O, station 2989, " Alba- 

 tross," which in 1893 (he. cit.) I called Pelia, sp., is very puzzling. It has the 

 claws of typical pacifica, but the carapace is not so wide ; but this may be due 

 to its greater size (8.6 mm. wide by 12.6 mm. long). On the whole I think 

 that it may be referred to the true pacifica, but more material is necessary 

 to determine this point. 



