!9 21 ] Schmitt: The Marine Decapod Crustacea of California 137 



Remarks. — Except for a slight twisting of the dactyls P. capillatus in general 

 appearance is very similar to P. setosus, but neither is the large hand propor- 

 tionally so long nor are its more numerous spines nearly so strong or so distinctly 

 arranged in longitudinal rows. In specimens of the same size the spines on the 

 large hand of P. capillatus are only half the size of tho.se of P. setosus. The 

 large hand of P. setosus is about twice as long as wide, with more depressed 

 fingers than those of P. capillatus. The large hand of P. capillatus is usually one 

 and a-half times as long as wide, occasionally one and three-fourths times as long 

 as wide. I have seen one specimen only in which the hand; was longer, about twice 

 as long as wide; but the characteristic armature of the large hand precludes any 

 confusion as to its identity. Furthermore, the triangular outer face of the small 

 hand of P. setostis is more rounded and not so prominently and broadly triangular 

 as that of P. capillatus, being about four times as long as wide. In P. capillatus 

 the triangular outer face of the small hand is about three times as long as wide. 



Pagurus hirsutiusculus (Dana) 



Plate 16, figure 4 



Bernliardus Mrsutiusculus Dana, Proc. Acad. Nat. Sci. Phila;, 5, 70, 1851; 



Crust. U. S. Expl. Exped., pt. I, p. 443, 1852, pi. 27, fig. 3, 1855. 

 Pagurus Mrsutiusculus Holmes, Occas. Papers Calif. Acad. Sci., 7, 143, 



1900; Eathbun, H. A. E., 10, 159, 1904; Hilton, Jour. Ent. Zool., 



Pomona Coll., 8, 63, 1916. 



Pig. 89. Pagurus Mrsutiusculus, X % (U. S. N. M.). 



Characters. — Anterior portion of carapace wider than long, squarish or squat 

 looking; median projection of front triangular, acute. Eye-stalks short and stout. 

 Acicle typically exceeds eye-stalk but frequently falls short of it. Carpus of large 

 cheliped not deeper than wide, inner and lower faces not meeting at a distinct 

 angle. Small hand wider than deep, outer face oblique, triangular, more or less 

 swollen. Carapace and ambulatory legs more or less hairy; dactyls moderately 

 stout, about as long as propodi. 



Dimensions. — Type: length 31.8 mm. The carapace of the specimens taken 

 in the Bay averaged between 6 to 9 mm. in length, the longest being about 

 12 mm. long. 



