1921] Schmitt: The Marine Decapod Crustacea of California 213 



Loxorhynchus crispatus Stimpson 



Loxorhynchus crispatus Stimpson, Jour. Boston Soc. Hist., 6, 453, pi. 22, 

 figs. 2-4, 1875; Holmes, Occas. Papers Calif. Acad. Sci., 7, 30, 1900; 

 Eathbun, H. A. E., 10, 175, 1904; Weymouth, Stanford Univ. Publ., 

 Univ. Ser., no. 4, 32, pi. 5, fig. 15, 1910. 



Fig. 133. Loxorhynchus crispatus, rf, X%; a, dorsal; o, lateral view of 

 rostral region (after Stimpson). 



Characters. — Carapace rather narrowly triangular, not nearly so wide or 

 inflated as in L. grandis ; covered with a short, thick felt-like coat of hair; with 

 nine to twelve prominent tubercles; hepatic region with one large spine. Rostrum 

 but slightly depressed as compared with L. grandis and with more divergent horns. 



Dimensions.— Type, male : length of carapace 87.6 mm., greatest width 57.4 mm. 

 The carapace of a single specimen brought in from Point Eeyes was 57 mm. in 

 length. 



Color. — Beneath the pubescence bluish white, the rostrum, spines, and feet 

 being of a bright carmine hue (Stimpson). In alcohol the color ranges from 

 reddish brown to tan; the carapace after removal of the hair often shows red 

 markings, especially about the tubercles (Weymouth). 



Type Locality. — San Miguel Island, California. 



Distribution. — From Point Reyes and the Farallon Islands to San Diego, Cali- 

 fornia; 4 to 53 fathoms. 



Remarks. — These crabs are generally found so thickly covered with foreign 

 growth, such as hydroids, seaweeds, bryozoans and sponges, that in their natural 

 environment they are scarcely recognizable as crabs at all (Holmes). 



Genus Scyra Dana 



Carapace subpyriform, tuberculated, but not spinose. Rostrum composed of 

 two short, flattened horns. Basal antennal joint deeply concave, with outer margin 

 flattened and produced but not spiny; next two joints flattened, with thin, broad 

 lateral expansions. Preocular spine present, acute; postocular deeply cupped on 

 anterior face and without hairs; orbits small, deep, with a fissure above and 

 below, the lower and sometimes the upper being open. 



