PART 1 GARTH : PACIFIC OXYRHYNCHA 119 



internally. There are two sharply granulate tubercles on the midline 

 of the first abdominal somite. The propodi of the first ambulatory legs 

 have 18 groups of curved hairs on one side and 23 on the other, not 

 14, as shown in Miss Rathbun's figure (1925, text-fig. 15). 



These supplementary notes make it possible to compare the holotype 

 of Podochela lobifrons with other Pacific species on a more detailed 

 basis that heretofore. Points of similarity suggesting identity of P. 

 lobifrons and P. barbarensis are the two median tubercles on the first 

 abdominal segment, the spatulate hepatic and pterygostomian promi- 

 nences, the long first ambulatory legs, approximately three times the 

 length of the carapace, the single tooth in the gape of the mature male 

 cheliped, and the curved hair count of 18 or better. Granting that the 

 rostrum of P. lobifrons has been broken and repaired, there remains 

 only the difficulty of reconciling the large, spike-like postorbital spine 

 with the usually small spine of P. barbarensis. The writer feels that 

 this may be attributable to the very soft condition of the holotype, and 

 has therefore made P. barbarensis a synonym of the earlier Rathbun 

 species. 



The discontinuous distribution exhibited by Podochela lobifrons, 

 namely, southern California and west coast of Lower California, 

 northern part, and Gulf of California, is shared by a number of north 

 temperate brachyuran species. Although having approximately the same 

 horizontal range as P. hemphilli, P. lobifrons is essentially a deep 

 water species, occurring most frequently in depths of 50 fathoms and 

 over. It thus competes ecologically with P. hemphilli, a shallow water 

 species, only in the comparatively narrow vertical zone in which their 

 ranges overlap. 



Podochela schmitti Garth 

 Plate H, Fig. 2 



Podochela schmitti Garth, 1939, p. 11, pi. 2, figs. 1-4; 1946, p. 371, 

 pi. 64, figs. 3, 4. 



Type: Male holotype, A.H.F. No. 382, length 12.8 mm, width 

 7.9 mm. 



Type locality: North of Hood Island, Galapagos, 20-40 fathoms, 

 Velero III station 814-38. 



Localities subsequently recorded, with collectors: Galapagos Is- 

 lands: Chatham, Albemarle, Daphne Major, James, and Barrington 

 Islands, 20-80 fathoms, Velero III (Garth, 1946). 



Atlantic analogue: None. A Galapagos endemic species. 



