148 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 24 



bercles; second with similar but somewhat more projecting and oblique tu- 

 bercles, crest not extending whole length of carpus but interrupted 

 near distal end, the two grooves defining it joined around its end; 

 third narrow, formed of oblique, strongly projecting, small tubercles, 

 and ending at about same point as second; fourth similar to third, 

 forming the posterior margin of the carpus. Manus with four distinct 

 crests defined by deep grooves, the crests composed of large flattened 

 granules: first extending to base of dactylus; second, joined to it proxi- 

 mally, extending to base of pollex ; third nearly to end of pollex ; fourth 

 along outer margin of manus and pollex. Fingers gaping in major 

 cheliped, meeting for entire length in minor cheliped; gape without 

 pubescence. 



Merus of walking legs with a few scattered plumose hairs, other seg- 

 ments thickly covered with plumose hairs on dorsal surface and anterior 

 margins. 



Telson of abdomen seven-plated in males, five- or Incompletely 

 seven-plated in females. A pair of pleopods in male. 



Variations: In some specimens the tubercles forming the carpal 

 crests are obsolescent, the crests appearing nearly smooth or lightly, 

 obliquely rugose ; in others, the two anterior crests may be very low and 

 the grooves defining the other crests shallow. Similarly, the granules 

 forming the manal crests may be obsolescent, the two inner crests nearly 

 absent and the grooves defining the others shallow. In smaller speci- 

 mens the teeth of merus and carpus are somewhat pointed on their 

 ends; in some adults, also, they are pointed and show traces of division. 



Material examined: See Table 46. 



Measurements: Males, 2.9 to 4.9 mm; non-ovigerous females, 2.9 

 to 5.2 mm; ovigerous females, 3.0 to 5.7 mm. The two syntypes exam- 

 ined by the writer measure 4.3 mm (male) and 4.4 mm (ovigerous 

 female). 



Color: Terracotta red, carapace lighter than chelipeds, with two 

 posterolateral white areas. (Nobili) 



Ecology: Velero III collectors took this species on two occasions 

 under stones in the intertidal zone. It occurs more commonly in coral, 

 from shore to about 4 fathoms. 



Ovigerous females have been collected in January, February, and 

 April. 



