54 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



to Mr. Steve A. Glassell for constant advice during the preparation of 

 the manuscript. Last, but not least, he w^ishes to express grateful appreci- 

 ation to Captain Allan Hancock for the privilege of traveling eight 

 times to tropical Pacific waters aboard Velero III. 



OXYSTOMATA 

 LEUCOSIIDAE 



Genus RANDALLIA Stimpson 



Randallia angelica, new species 



Plate 11, Figs. 1, 2 



Type: Female, holotype, Cat. No. 361, Allan Hancock Founda- 

 tion, The University of Southern California, and male, allotype, from 

 north of Angel de la Guardia Island, Gulf of California, Mexico, 40-70 

 fathoms; March 5, 1936; eight males and eight females, paratypes, same 

 locality and date; collected by Allan Hancock Expedition of 1936 at 

 Velero Station 546-36. 



Measurements: Female holotype: length of carapace 18.7 mm., 

 width 16.4 mm., length of cheliped 24.2 mm., of chela 12.5 mm., of 

 dactyl 7.2 mm. Male allotype: length of carapace 18.0 mm., width 

 15.2 mm. 



Diagnosis: Carapace smooth and bare both dorsally and ventrally; 

 of the cheliped only the merus is conspicuously granulate. Front pro- 

 duced; frontal teeth well separated. Ischium of third maxilliped non- 

 granulate at base. Lower margin of merus of last ambulatory leg with- 

 out granules. 



Description: Carapace longer than wide, devoid of pearly granules 

 except on median carina, smooth and bare except under high magnifi- 

 cation, when it is seen to be paved with fine, flat granulation. Front 

 produced, its sides forming a distinct, though obtuse, angle with the 

 hepatic margin. Frontal teeth considerably advanced over the exorbital 

 and separated from one another by a positive indentation. Hepatic and 

 pterygostomian regions tumid, tuberculate, posthepatic sulcus barely in- 

 dicated. Three anterolateral granules, evenly spaced. Five posterior 

 tubercles located as follows: two sharp tubercles on posterior margin, a 

 row of three above it, of which two are postbranchial, the third intesti- . 

 nal. Basal antennular articles all but closing antennular fossae. Outer i 

 maxillipeds with a longitudinal row of granules down the middle of the 



