THE SPIDER CEABS OF AMERICA 



183 



Fin. 70.— MiMULVs foli.itvs, male 



COTYPE, CARAPACE 28 MM. LONG, DORSAL 



VIEW. (After Stimpson) 



Description. — Carapace flattened and marked with several undula- 

 tions; lateral expansions a little reflexed, margin behind incision 

 nearly twice the length of that before; antero-lateral and postero- 

 lateral angles wide, the latter somewhat produced; median region 

 tumid, bearing two small, obsolescent, gastric tubercles, in front of 

 which there ma}" be two convergent rows of curved setae; another 

 tubercle on each branchial region, a little above the middle of the 

 postero-lateral margin. Intestinal region produced backward in a 

 large smooth protuberance. Rostral 

 horns short, flattened, with convex 

 outer margins and spiniform, incurved 

 tips; median notch narrowly triangular 

 and setose; on upper side of rostrum 

 there are two double rows of curved 

 setae. Preocidar tooth large, triangu- 

 lar, acute; postocular small and point- 

 ing obliquely downward, separated by 

 a fissure from the preocuiar. 



Chelipeds of male large; inner mar- 

 gin of merus.and carpus lamellate; hand oblong, fingers bent down- 

 ward and curved inward, somewhat gaping near base, distally dentate, 

 a large tooth on the dactjdus in the gape. The propodites of the am- 

 bulatory legs have each a tuft of setae below. 



Color. — A dull purplish, tan or red; legs banded. 

 Variable. A male (22874) had a deep red carapace, 

 with a narrower lighter border on the limb, and in 

 the center a broad white V; hands red above, shad- 

 ing to white below; legs crossed by broad bands of 

 red and white. 



Measurements. — Female (23925), length of cara- 

 pace to tip of rostral horns 29, width 32.4 mm. Male 

 (22874), length 24.4, width 27.8 mm. 



Range. — Unalaska to Monterey Bay, California; 

 Mazatlan, Mexico (A. Milne Edwards). Low tide 

 to 20 fathoms. 



Matenal examined. — 



Off Imagnee Pinnacle, Captains Bay, Unalaska, 

 LUTrs(22874),MAxa- Alaska; 8 to 20 fathoms; 1880; W. H. Dall; 1 

 UPED,X5 female (14894). 



Ucluelet, British Columbia; low tide to deep water; Geol. Surv. of 

 Canada; 1 male (40076). 

 Barclay Sound, British Columbia; Albatross; 1 male (15548). 

 Mendocino, California; A. Agassiz; 3 males, 3 females (1 ovigerous) ; 

 identified by Stimpson (993, M. C. Z.). 



Fig. 71.— Mimclus fo- 



