NO. 1 glassell: three new anomuran crabs 5 



PORCELLANIDAE 



Genus PORGELLANA Lamarck, restricted 



Porcellana hancocki Glassell, new species 



Porcellana hancocki Glassell, manuscript name, Zoologica, N. Y. Zool. 



Soc, vol. 22 (part 1), no. 4, 1937, p. 87. 



Type: Male, holotype; Cat. No. 72454, and female, paratype, 

 U.S. National Museum; from entrance to Angeles Bay, Baja Cali- 

 fornia, Mexico, 25 fathoms; March 3, 1936; collected by Allan Han- 

 cock Pacific Expedition of 1936. 



Measurements : Male holotype: length of carapace 6.3 mm., width 

 5.8 mm. Female paratype: length 4.8 mm., width 4.2 mm. 



Diagnosis: Carapace slightly convex, high in center, lateral mar- 

 gins sharp, upturned. Front tridentate, horizontal. Chelipeds slender. 

 Ambulatory legs long. 



Description: Carapace longer than wide, slightly convex, with 

 gastric regions highest, slightly rugose, a small whorl on each side of 

 the cardiac region; lateral margins slightly upturned, a sharp, deep, 

 narrow, V-shaped notch at terminus of the cervical groove; a trans- 

 verse line of tomentum behind the front; front tridentate, median tooth 

 triangular; a shallow median sulcus extends to near the distal end; 

 it is longer than the lateral teeth and separated from them by a wide, 

 V-shaped notch ; the lateral teeth slightly diverge, their outer margins 

 form in a sweeping curve, the upper orbits for the eyes, their inner 

 margins, with those of the median tooth, form a graceful "W" ; a post- 

 orbital tooth. Eyes large; stalks thick, short. Antennae long. Epimera 

 fringed with tomentum. 



Chelipeds rather slender, narrow; merus armed at distal inner end 

 with a vertically pointed, sharp tipped, compressed lobe, its tip exceed- 

 ing the plane of the carpus; carpus longer than wide, armed with a 

 single low tooth whose longest margin is proximal, the surface micro- 

 scopically, transversely striate; the ventral inner surface is also armed 

 with a tooth, as is the dorsal, a concavity between these surfaces for 

 the reception of the inner part of the hand; hands similar, unequal, 

 the right (in the holotype) the larger, a ridge on the inner margin to 

 base of dactyl, a median ridge from proximal end to gape; from this 

 ridge to outer margin the hands are tomentose, the margin fringed 

 with serrate granules and pinnate setae to tip of upturned pollex; the 

 dactyli are sinuous, with sharp, curved tips; palms of hands smooth. 



