1921] Schmitt: The Marine Decapod Crustacea of California 149 



II. Hand of larger cheliped finely pubescent and armed with three longitudinal 

 rows of spines; a row of small spines on the inner edge and two rows of 

 larger spines on the outer surface of the hand, with a broad smooth interval 

 between them. Lateral margins of the carapace with from four to six teeth 

 on each side. (Not known south of Humboldt Bay.) 



grebnitzleii, p. 150. 



Hapalogaster cavicauda Stimpson 



Plate 29, figure 1 



Hapalogaster cavicauda Stimpson, Ann. Lye. Nat. Hist. N. Y., 7, 81, pi. 1, 

 fig. 7, 1859 (1862) ; Bouvier, Ann. Sei. Nat. (7), 18, 166, pi. 12, fig. 29, 

 1895; Holmes, Oceas. Papers Calif. Acad. Sei., 7, 113, 1900. 



Fig. 95. Hapalogaster cavicauda; a, dorsal 

 Bouvier); b, $, natural size (after Stimpson). 



view of carapace, £ (after 



Clwracters. — Body and legs densely covered with short hair. Carapace nearly 

 smooth but roughened or granulated at the insertions of the hairs. The portion 

 of the anterolateral margin of the carapace in front of the cervical groove is con- 

 vex, sublaminate, edentate, and separated from the portion behind by an incision; 

 two marginal teeth at the origin of the sutures. Anterior margins of ambulatory 

 legs deeply incised, forming four or five closely approximated teeth on each of 

 the larger joints; the incisions are hidden by the hairiness of the legs. Hand of 

 larger cheliped with one or more small, calcareous tubercles on inner face only, 

 behind articulation of the dactyl. The calcareous plates on the basal (second) 

 segment are widely separated by a membranous interval, in which there is no 

 median plate; left side of abdomen of female is coriaceous and segmentally 

 incised. 



Dimensions. — Type: length of carapace 18.3 mm., width 21.1 mm. 



Type Locality. — Monterey, California. Common under rocks at low tide. 



Distribution. — From Cape Mendocino to San Clemente Island, California. 



