g70 Piiget Sound Marine Sta. Pub. Vol. 1, No. 30 



margin and dorsal surface. Supraorbital and postorbital spines not prom- 

 inent. Carapace exclusive of rostrum more or less rectangular; carapace 

 higher thru median line in young ones; posterior margin markedly convex 

 in the middle, lateral margins broken by 2 prominent teeth ; surface smooth 

 and not arcolated. Chelipeds large and powerful in all males except very 

 eld ones, shorter than the first pair of walking legs ; fingers long, slender, 

 in females dentate along the whole inner margins but not so in males. 

 Walking legs long, smooth, stouter than those of most spider crabs ; dactyls 

 with two rows of fine teeth along inner margins terminating in a sharp 

 curved claw, teeth projecting toward tip of leg. Adult female carapace 

 measured 70 mm. in width from tip to tip of second pair of lateral teeth, 

 and 85 mm. in length from notch in rostrum to posterior margin; similarly 

 male carapace measured 70 mm. in width and 87 mm. in length. Color 

 of dorsal parts dull brownish green, of ventral parts light tan; sternum, 

 mouth parts and chelipeds often marked with bright red; body often 

 mottled with spots of darker color. 



Abundant everywhere in the region in eel grass (Zosteria marina), on 

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



Genus Pugettia r,n r- , 



1. Pugettia gracilis Dana. graceful kelp crab (fig. 21) 



Pugettia lordii Bate; Pugettia quadridens gracilis Ortmann. 



Rostrum bifid; the divergent horns broad at base and tapering to a 

 point, inner margins and dorsal surfaces covered with stiff hooked hairs. 

 Antennae short; flagellum extending a short distance beyond rostrum. 

 Carapace lyrate; surface very uneven. Most of the elevations or tuber- 

 cles tipped with a tiny tuft of hairs, in many these tufts not conspicuous; 

 with 2 short rows of hooked setae on each side of the median line posterior 

 to the supraorbital spine, with two rows of similar setae from the posterior 

 part of the rostrum to the anterior edge of the supraorbital spine; anterior 

 margin of supraorbital spine fringed with hairs; postocular spine and 

 first lateral tooth united to make a leaf-like expansion of carapace; third 

 lateral tooth on posterior part of lateral margin. Chelipeds smooth; hands 

 large ; fingers shorter than the palm ; gaping at the proximal ends in older 

 specimens; dactyl and pollex not toothed alike; carpus marked with 3 or 4 

 lines; merus roughly trigonous, upper edge more or less toothed. Largest 

 specimen collected was a male 67 mm. long and 45 mm. wide. Color of 

 dorsal surface usually greenish brown, and ventral side very much lighter. 

 But those found off Canoe Island (16) in Upright Channel among red 

 algae are a brilliant red. A few red ones were also found in the channel 

 between Turn Island and San Juan Island (10). 



