THE SPIDER CRABS OF AMERICA 



169 



Bull. Nat. Hist. Soc. Brit. Columbia, 1893, p. 22.— Ortm.\nn, Zool. Jahrb., 

 Syst., vol. 7, 1893, p. 42.— M. J. Rathbun, Proc. U. S. Nat. Mus., vol. 17, 

 1894, p. 68 (except Alaskan locality). — Holmes, Occas. Papers California 

 Acad. Sci., vol. 7, 1900, p. 22. — Weymouth, Stanford Univ. Publ., Univ. 

 Ser., No. 4, 1910, p. 28, pi. 3, fig. 9.— Baker, Rep. Laguna Mar. Lab., 

 vol. 1, 1912, p. 100.— Way, Puget Sd. Mar. Sta. Publ., vol. 1, 1917, p. 1, 

 pi. 82, fig. 25.— ScHMiTT, Univ. Calif. Publ. Zool., vol. 23, 1921, p. 201, 

 text-fig. 124. 

 Epialtus (Taliepus) produdus A. Milne Edwards, Crust. R%. Mex., 1878, 

 p. 138. 



Diagnosis. — Lateral margin of carapace mtli two teeth, the first 

 very prominent and ^vinglike. A preocular and postocular tooth. 

 Fingers of male gaping. Propodites of ambulatory legs naked and 

 unarmed. 



Description. — Carapace smootK, sides in front of posterior lateral 

 teeth nearly parallel; first tooth oi antero-lateral margin large and 

 prominent. Rostrum bifid, deeply notched, 

 inner margin of horns slightly concave, outer 

 convex. Preocular spine small, triangular; 

 postocular also small. Antennae exceecUng 

 rostrum. Chelipeds stouter than ambulatory 

 legs, and in old males longer; two tubercles 

 above proximal end of merus, carpus and 

 manus bluntly carinate; chela much enlarged 

 in full-grown males, palm swollen, fingers %\idely 

 gaping for half their length, a large tooth on 

 dactyl in middle of gape, extremities of both 

 fingers evenly toothed; in females and immature 

 males, the fingers are dentate and meeting 

 throughout their length or nearly so. SLxth fig. 63. 

 segment of male abdomen longer than fifth, 

 both segments much %vider than long. 



Color. — Dark brown to tan (in young or recently moulted) ; under 

 parts redchsh, often bright brick red, sometimes wdth light markings 

 on coxae of legs and on maxillipeds (Weymouth). Color reddish 

 brown to olivebrown, mottled with darker,small,roundspots (Holmes). 



Measurements. — Male (47970), total length of carapace 87.3, 

 width 76 mm. Male (Weymouth), total length 107 (by error 170), 

 width 93 mm. 



Hahitat. — In kelp beds, young common in tide pools, clinging to 

 Fucus and other brown algae (Baker). Abundant in eel grass, on 

 kelp, and on the piles under docks ; common to at least 40 fathoms (Way) . 



Range. — From Vancouver Island, British Columbia, to Santa 

 Rosalia Bay, Lower California. 



Material examined. — i» 



West coast North America; Dr. G. Suckley, N. Pacific R. R. 

 Survey; 1 female (2139). 



PUGETTIA PRODUCTA 

 (19315), MAXILLIPED, X 2 .78 



