72 THE BRACHYURA. 
Euphylax dovii Stimpson. 
Euphylax dovii Stimpson, Ann. Lyc. Nat. Hist. N. Y., 1860, 7, 226, pl. 5, fig. 5. 
Euphylax dovii A. Milne Edwards, Miss. Sci. au Mexique, 1879, 204, pl. 38, fig. 2. 
Off Gulf of Panama, lat. 7 15’ N., long. 82° 8’ W., surface, station 4619, 
Oct. 20. 1904; 19. 
INACHIDAE. 
Acanthonyx petiverii Milne Edwards. 
Acanthony= petiverii Milne Edwards, Hist. Nat. Crust., 1834, 1, 343. 
Acanthonyx Petiveri A. Milne Edwards, Miss. Sci. au Mexique, Zool., 1878, part 5,1, 143, 
pl. 27, fig. 7, and synonymy. 
Perico Id., Panama; Oct. 26, 1904; 1 ¢. 
Pelia pacifica A. Milne Edwards. 
Pelia pacifica A. Milne Edwards, Miss. Sci. au Mexique, Zool., 1875, 1, part 5, 73, pl. 16, — 
fig. 3. Not Pelia pacifica Rathbun, Proc. U. 8. Nat. Mus., 1893, 16, 90. 
Perico Id., Panama; Oct. 26, 1904; 14,29. 
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 froin Perico 
Island are very short and broad (2, 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. clausa — 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 2, from off Magdalena Bay, L. C., station 2989, “ Alba- 
tross,” which in 1893 (loc. 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. 
