THE CANCEOID CRABS OF AMERICA 205 



•convex, very uneven. Inner lower orbital tooth flat, pressed close to 

 the upper tooth; next it a small acute tooth. Merus of outer maxil- 

 liped about as broad as long, its anterior margin very oblique and 

 forming a right angle with outer margin. Chelipeds rough above; 

 merus unarmed; carpus rugose and lumpy, a single broad blunt tooth 

 at inner angle, a large tubercle near articulation with manus; manus 

 wdth four granulated carinae on outer surface ; rugose above and wdth 

 three rows of more or less obscure tubercles. Dactyh of legs thickly 

 fringed above and below. 



Color. — Adult dark red above, dirty white or yellowish white below; 

 sometimes light red above due to minute red spots, not so numerous as 

 in the case of the darker color, on a yellowish ground; or carapace 

 with a complex pattern of narrow^ red lines on a yellowish ground. 



Measurements. — Male (3111), length of carapace 97; width of same 

 157.5; fronto-orbital width 32; width of front between antennae 13, 

 between tips of inner orbital teeth 18.6 mm. Male (Pacific Grove), 

 width of carapace 173.5 mm. (Weymouth). 



Range. — From Kodiak, Alaska, to Laguna Beach, CaHfornia. 

 Locldngton -^ gave Magdalena Bay, L. Cal., as the southern limit. 

 Many specmiens formerly referred to the young of the common species, 

 C. magister, C. froductus, etc., were later found to belong to the more 

 recently defined species, anthonyi, hranneri, jordani, etc. For this 

 reason only those stations from which material has been revised are 

 included here. 



Material examined. — See table, pages 206-207. 



CANCER AMPHIOETUS Rathbun 



Plate 91 



Trichocarcinus dentatus Miers, Proc. Zool. Soc. London, 1879, p. 34 (type-locali- 

 ties, 4 stations oflf Korea and Japan, 5.5 to 37 fathoms; types in Brit. Mus.). 

 Not Cancer dentatus Herbst, 1785, nor C. dentatus Bell, 1835. 



Cancer pygmaeus Ortmann, Zool. Jahrb., Syst., vol. 7, 1893, p. 426, pi. 17, 

 fig. 4 (type-locality, Tokio Bay; type in Strassburg Mus.). — Balss, Arch, 

 f. Naturg., vol. 88, pt. 2, 1922, p. 94. Not C. pygmeus Fabricius, Mantissa 

 Insectorum, vol. 1, 1787, pi. 320; nor C. pygmaeus Fabricius, Entom. Syst., 

 1793, p. 451. 



Cancer amphioetus Rathbun, Proc. U. S. Nat. Mus., vol. 21, 1898, p. 582; name 

 substituted for dentatus, preoccupied in the genus Cancer; Harriman Alaska 

 Exped., vol. 10, 1904, p. 175, pi. 6, fig. 3.— Schmitt, Univ. Calif. Publ. 

 Zool., vol. 23, 1921, p. 223, pi. 36, figs. 1 and 2. 



Cancer bullatus Balss, Zool. Anz., vol. 54, 1922, p. 1 (tj^pe-locality, Aomori; 

 type in Berlin Mus.); Arch. f. Naturg., vol. 88, pt. 2, 1922, p. 95, pi. 1, 

 figs. 2 and 3 (type designated). 



Diagnosis. — Antero-lateral teeth broadly triangular, moderately 

 produced, subequal. Carapace not pubescent, strongly areolated 

 especially in the female. 



'6 Proc. Calif. Acad. Sci., vol. 7, 1876 (1877), p. 94 [1]. 



