144 University of California Publications in Zoology [Vol.23 



Pylopagurus minimus (Holmes) 



Plate 16, figures la, lb, and 1c 

 Pagurus minimus Holmes, Oceas. Papers Calif. Acad. Sei., 7, 145, 1900. 



Characters. — Median projection of front triangular, acute, lateral ones rounded; 

 anterior portion of carapace about as wide as long. Chelipeds pubescent ; large 

 hand oblong, widening distally to a short distance beyond the base of the movable 

 finger; base of the hand armed with anteriorly inclined spines, strongly convex 

 longitudinally, giving hand the appearance of being bent downward; fixed finger 

 broad, outer edge evenly rounded, sharp, upturned, and armed with anteriorly 

 directed spines, the upper surface smooth and concave ; movable finger broad, 

 widest a little beyond its articulation, outer margin sharp, spiny, evenly curved, 

 upper surface nearly smooth and concave; inner margin of both fingers furnished 

 with large, white, tubercular teeth ; small hand narrow, rounded, fingers longer than 

 palm. Dactyls of ambulatory legs slender, curved, tapering from the base, spiny 

 below, and longer than the propodi. 



Dimensions. — Type, female: length 10 mm. 



Color. — General color reddish, with spots of darker red, larger cheliped a darker 

 red than. the rest of the body, especially at the distal end; ocular peduncles with 

 a median, transverse, light colored band (Holmes), described from a single female 

 specimen carrying numerous pale green eggs. 



Type Locality. — Off San Diego, dredged in 30 fathoms (Holmes). 



Distribution. — Skidegate, Queen Charlotte Sound, British Columbia; San Fran- 

 cisco, Monterey Bay, Laguna Beach, and San Diego, California, 15 to 35 fathoms. 



Remarks. — This species is best distinguished by the character of the larger 

 hand, which is convex at the narrow base, both longitudinally and transversely, 

 while the distal portion is nearly smooth, longitudinally straight, but transversely 

 concave (Holmes). Has been found in worm tubes (Benedict) and in Dentalium 

 ("tooth") shells between the Farallones and Golden Gate. 



Biological Survey of San Francisco Bay. — A single specimen of 

 Pylopagurus minimus was dredged at D 5790, 33 to 35 fathoms, in 

 company with Pagurus ochotensis, and Paguristes bakeri. 



Pylopagurus holmesi sp. nov. 



Fig. 94. Pylopagurus holmesi, £, large hand; a, external-lateral view, X 6%; 

 b, view of flat upper face, slightly smaller. 



