144 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 18 



Pylopagurus longicarpus n. sp. 



Type: Male holotype, AHF no. 407, five male and five female 

 paratypes, from station number 1057-40 off Puerto Refugio, Angel de la 

 Guardia Island, Gulf of California, dredged on 29 January 1940 by the 

 Velero HI in 51 to 56 fathoms. 



Diagnosis: Major part of upper surface of large hand spatulate, 

 over twice as long as wide, widest portion distal to base of fingers ; carpus 

 greatly elongate, over twice as long as wide. 



Description: Chelipeds dissimilar, unequal, the right much larger; 

 spatulate upper surface of manus margined by ridge of minute pointed 

 granules, widest portion distal to base of fingers, anterior one-third so 

 strongly longitudinally convex that it appears to be bent downward when 

 viewed from lateral aspect, proximal portion longitudinally and trans- 

 versely convex, covered with minute pointed granules; carpus elongate, 

 over twice as long as wide, surface covered with pointed, forward- 

 curved granules, broad-based acute spine on anteromedial corner ; merus 

 also elongate, extending beyond tips of eyes for over two thirds of its 

 length, lower anterolateral corner with acute spine. 



Minor cheliped quite small, manus approximately one half the 

 greatest width of the major; carpus crested with sharp forward curved 

 spines, several forward directed spines on dorsal surface of anterior 

 margin. 



Percervical portion of carapace smooth, longer than wide, median 

 point narrow, extremely acute, over twice as long as width of base; 

 lateral projections rounded, barely reaching beyond base of median point; 

 postcervical portion not calcified, glabrous, posterior border with slight 

 rounded indentation. 



Eyestalks short, stout, somewhat dorso-ventrally compressed ; corneas 

 dilated; eye-scales triangular, longitudinally convex, furnished with 

 stout acute, subterminal spines which project beyond apices. 



Antennal acicle slender, smooth-margined, acute, curving outward, 

 slightly shorter than eyes; antennal peduncles when extended approxi- 

 mating length of eyes, flagella slightly setose, reaching to middle of 

 major carpus; antennular peduncles longer than eyes by one half the 

 length of terminal article. 



Pereiopods on left side as long as on right, not reaching base of 

 fingers of major hand ; carpus and propodus crested with forward curved 

 pointed granules; dactyls spinulose, slightly longer than propodus and 

 tipped with a corneous claw. 



