No. 10 GARTH : BRACK YURAN FAUNA OF THE GALAPAGOS 371 



Remarks. — Only the male of the species shows the granulate sternum 

 and abdomen mentioned by Rathbun in the original description. The 

 globular abdomen of the fully developed female is smooth and bare, and 

 the small portion of the sternum left exposed consists of a series of con- 

 voluted ridges leading to the bases of the walking legs. The edges of these 

 are cristate, the centers depressed, giving the whole the vermiculate ap- 

 pearance of the corresponding region in Podochela vestita Stimpson. But 

 for the fact that in so many instances a male with granulate abdomen and 

 a female with the bare ridges described above, obviously a pair, were taken 

 together, one might be led to believe them two species. 



The largest series, taken at two adjacent stations, consists of 13 speci- 

 mens dredged in 12-15 fathoms in Gardner Bay, Hood Island. This 

 shows not only the wide geographical range of the species within the 

 archipelago but also indicates that the metropolis of the species may be 

 in southern Galapagos waters. 



This hooded decorator crab, heretofore believed to be the sole repre- 

 sentative of its genus in the archipelago, makes way for a companion 

 species, P. schmitti Garth, from which it must now be carefully distin- 

 guished by the points given in the above diagnosis. 



P. margaritaria, hitherto known only from the type specimens of the 

 Hopkins-Stanford Expedition taken at Tagus Cove, occurs throughout 

 the Galapagos Islands at depths of from 5 to 70 fms. 



Podochela schmitti Garth 

 Plate 64, Figs. 3, 4 



Podochela schmitti Garth, Allan Hancock Pac. Exped., vol. 5, no. 2, pp. 

 ll-13,pl. 2, f^gs. 1-4, 1939. 



Type locality. — North of Hood Island, Galapagos Islands, 20-40 fms. 



Type.—ARY no. 382. 



Range. — Waters surrounding the southern and central islands of the 

 Galapagos group, 20-80 fms. 



Diagnosis. — Rostrum acuminate, typically bifurcate. Postorbital spine 

 laciniate. First ambulatory leg of male two and one-half times length of 

 carapace. 



Material examined (20 specimens from 10 stations). — 

 170-34. East of Wreck Bay, Chatham Island, 32 fms, Jan. 21, 1934, 



1 male. 



185-34. Cartago Bay, Albemarle Island, 32 fms, Jan. 25, 1934, 1 male, 



2 females. 



