NO. 2 GARTH : NEW BRACHYURAN CRABS 13 



First ambulatory leg longest, equal to two and one-half times the 

 length of the carapace, including rostrum, its superior surface provided 

 with groups of three curved setae evenly spaced, of which 34 may be 

 counted from coxa to dactyl. Second ambulatory little more than half 

 the length of the first, third and fourth ambulatory legs subequal in 

 male type, although less mature male specimens show the fourth leg 

 relatively shorter. Dactyls of first leg straight and approximately one 

 third the length of penultimate segment, tip incurving; dactyls of legs 

 two, three, and four falcate and from one half to two thirds the length 

 of propodi, successively. 



Female chelae slender, fingers almost meeting when closed, finely 

 dentate, curving inward. First ambulatory twice the length of the 

 carapace. 



Color in life: Deep olive buff. (Petersen) 



Range: The 16 specimens collected by Velero III were obtained 

 from Hood, Chatham, Barrington, James, and the Daphne islands, 

 Galapagos, in depths of from 20 to 80 fathoms. 



Remarks: This species is readily separated from P. margaritaria 

 Rathbun (1902), the other member of the genus common to the Gala- 

 pagos, by the acuminate rostrum, that of P. margaritaria being hood- 

 shaped. It is more nearly related to P. he?nphillii Lockington (1877), 

 from which it may be distinguished by the bifurcation of the rostral tip, 

 the more prominent gastric and cardiac tubercles, the large, laciniate 

 postorbital spine, the cylindrical tubercles of the mammilliform hepatic 

 prominences, the presence of an anteroexternal spine or spinules on the 

 basal antennal article, and the two median tubercles on the first ab- 

 dominal segment. 



I take pleasure in naming the species for Dr. Waldo L. Schmitt, 

 Curator of Marine Invertebrates, U. S. National Museum, and mem- 

 ber of three Allan Hancock Expeditions, whose untiring zeal, both in 

 the field and in the laboratory, is a constant source of inspiration to 

 those who work with him. 



Genus EUPLEURODON Stimpson 



Eupleurodon rathbunae, new species 



Plate 3, Figs. 1-5 



Type: Ovigerous female, holotype. Cat. No. 77366, U. S. National 

 Museum, from a rocky spit at Gardner Bay, Hood Island, Galapagos; 



