428 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



Genus PLATYPODIA Bell, 1835 

 Key TO THE Galapagos Species of the Genus Platypodia 



A^ Mesogastric region linear, protogastric lobule bifid 



P. rotundata 



A^ Mesogastric region broadened anteriorly, protogastric lobule 



entire P. gemmata 



Platypodia gemmata Rathbun 

 Plate 79, Fig. 1 



Platypodia gemmata Rathbun, Proc. Washington Acad. Sci., vol. 4, p. 

 279, pi. 12, figs. 5 and 6, 1902; Bull. 152, U.S. Nat. Mus., p. 249, 

 text fig. 40, 1930. Finnegan, Journ. Linn. Soc. London, vol. 37, p. 

 633, 1931. Sivertsen, Med. fra det Zool. Mus., Oslo, nr. 38, p. 15, 

 1933. Schmitt, Smithsonian Misc. Col., vol. 98, no. 6, p. 25, 1939. 

 Type locality. — Albemarle Island, Galapagos Islands. 

 Type.—U^^M No. 24850. 



Range. — Galapagos Islands, Albemarle (Hopkins-Stanford Expedi- 

 tion) ; Bay of Panama, Taboga Island (Crossland). 



Diagnosis. — Carapace rotund, areolate, margin cristate. Mesogastric 

 region broadened anteriorly. Palm with transverse ridges ; superior crest 

 high. 



Material examined (82 specimens from 26 stations). — 

 24-33. Gardner Bay, Hood Island, shore, Jan. 24, 1933, 1 male, 1 



ovig. female. 

 30-33. Gardner Bay, Hood Island, shore, Jan. 26, 1933, 1 young. 

 38-33. SE of Cormorant Point, Charles Island, shore, Jan. 29, 1933, 



1 young. 

 59-33. Off Cormorant Bay, Charles Island, 13 fms, Feb. 6, 1933, 1 



female. 

 65-33. Reef north of Tagus Hill, Albemarle Island, reef, Feb. 9, 



1933, 1 male, 1 large female. 

 71-33. James Bay, James Island, shore, Feb. 12, 1933, 2 males, 1 



female. 

 76-33. Cartago Bay, Albemarle Island, coral, Feb. 14, 1933, 10 males, 



9 females. 

 82-33. Conway Bay, Indefatigable Island, shore, Feb. 17, 1933, 2 



females. 

 85-33. North Seymour Island, shore, Feb. 18, 1933, 3 young. 

 93-33. Darwin Bay, Tower Island, shore, Feb. 22, 1933, 2 males, 2 

 females. 



