Chelipeds unequal, right larger than left. Ma- 

 jor chela a little wider than carpus, fingers agape, 

 margins set with comb of long, slender spines; 

 upper surface with more or less diagonal rows of 

 spines on palm and spines irregularly but closely 

 set near base of dactyl and on immovable finger ; 

 dactyl with several rows of irregularly placed 

 plates, and a small spine arising from center of 

 each ; carpus with three rows of sharp spines, one 

 on outer margin, one on upper surface, and one 

 on inner surface. Minor chela extending to base 

 of major dactyl; hand armed with spines as in 

 opposite member but hairier, and no spine-bearing 

 plates on dactyl; fingers agape; carpus with a 

 double crest of spines, outer margin convex, inner 

 margin straight and flat; merus compressed. 

 Walking legs long and slender, dactyls lightly 

 setose, longer than preceding two articles to- 

 gether; propodus and carpus with a crest of 

 spines. 



Measurements. — Length of carapace : female, 7 

 mm. 



Variations.- — Fingers of the chelae do not gape 

 in small individuals. 



Habitat. — Sixteen to 49 fathoms. 



Type locality. — Gulf of Mexico between Delta 

 of Mississippi River and Cedar Keys, Fla., 30 

 fathoms. 



Known range. — Cape Hatteras to Cape Look- 

 out, N.C. ; Tortugas, Fla., to Alabama. 



Pagurus pollicaris Say 



Figure 103 



Pagurug pollicaris Say, 1817, p. 162. — Hay and Shore, 1918, 

 p. 411, pi. 30, fig. 1. — Provenzano, 1959, p. 401, fig. 16 (rev.). 



Recognition characters. — Anterior shield of 

 carapace subcordate, nearly as long as broad, 

 truncate posteriorly. Rostrum slightly less ad- 

 vanced than lateral projections of front. Eye- 

 stalks moderately stout, not so long as width of 

 anterior carapace, nearly straight, cornea dilated; 

 eye scales with round-tipped, slightly concave an- 

 terior lobe armed with inferior subterminal spine. 

 Antennular peduncles exceeding eyestalks by ap- 

 proximately half length of last article. Antennal 

 peduncles exceeding eyestalks; acicles slender, 

 curved outward, reaching to or beyond base of 

 cornea, hairy medially. 



Chelipeds unequal, right much larger than left, 

 both covered with small, closely spaced granules, 

 outer margins with enlarged granules or small 



Figure 103. — Pagurus pollicaris Say. Anterior part of 

 animal and chelipeds in dorsal view, approximately 

 X 3 (after Provenzano, 1959). 



spines. Major chela stout, hand flattened; mov- 

 able finger with prominent, projecting angle on 

 medial border; tips of fingers acuminate; carpus 

 with numerous tubercles, larger than on hand, 

 subspinose and ciliated on upper surface; merus 

 with a few squamiform tubercles. Minor chela 

 with inner border dentate, movable finger not pro- 

 duced, dentation of inner border continued on 

 inner dorsal border of carpus. First and second 

 walking legs with dactyls much longer than 

 propodi ; first pair with small, well-defined spines 

 along upper margin of propodus and carpus; sec- 

 ond pair with spines reduced. Third legs re- 

 duced, fourth pair reduced and carried on back. 



Measurements. — Length of carapace: male, 31 

 mm. ; female, 27 mm. 



Color. — Color varies with locality, those of west 

 Florida being lighter than those of Northeastern 

 States. Chelipeds basically white with gray mar- 

 gins on insides, tips of dactyls and dark area in 



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