NO. 2 GARTH : NEW BRACHYURAN CRABS 27 



Chelipeds feeble, equal in size, and similar in sexes. Granules of 

 outer surface of hand chiefly in two rows. 



First leg short and slender, its dactyl reaching but little beyond the 

 carpus of the second, merus rough, bearing an acute tooth at its distal 

 extremity. Second leg longest, 1.4 times the width of the body, its merus 

 robust, cristate, and bearing a large, acutely angled, acuminate spine 

 distally. Third leg similar to second, its merus slightly shorter and 

 two thirds the width of the second, the distal meral spine rectangular. 

 Carpus of legs two and three long and narrow, proximal lobes less pro- 

 duced than distal ; propodus widening distally ; dactylus of leg two with 

 posterior margin almost straight, of leg three more noticeably sinuous. 



First three segments of female abdomen carinate, the first carina 

 having a shallow lobe behind each corner of the carapace, the second 

 forming a median lobe, the third projecting both laterally and medially. 

 A prominent sternal plate visible in dorsal view at base of third walking 

 leg. 



Range: The 106 specimens at hand come from Hood, Chatham, 

 Indefatigable, Albemarle, Jam.es, South Seymour, Daphne Minor is- 

 lands, and pelagic stations, Galapagos, in depths of from 3 to 150 

 fathoms. 



Remarks: A small species, more closely related to C. sica A. Milne 

 Edwards (1880) than to any of the known Pacific forms because of 

 the laminate crests of the abdomen, the configuration of the frontal 

 and orbital teeth, and the peculiar sternal plate at the base of the third 

 walking leg. Not to be confused with C. zacae Glassell (1936), al- 

 though the number and arrangement of the anterolateral spines are 

 similar. The proportion of the breadth to the length of the carapace, 

 and of the length of the ambulatories to the width of the body, will 

 suffice clearly to distinguish these two. 



This species is christened velerae in honor of the Allan Hancock 

 Expedition cruiser, Velero III, whose name is a byword in every bay 

 from San Diego to Southern Peru, as well as in the Galapagos Islands. 



