102 University of California Publications in Zoology [Vol. 23 



Dimensions. — Type, ovigerous female: length 25 mm. 



Color. — Abdomen with sixth segment darker colored than the others; a dark 

 transverse band on the caudal appendages (Walker). One specimen was mottled 

 brown with bright red markings along the back; the whole body of another was 

 a dark slate color; another was banded with slate color, with center of body red; 

 and still another had bands of slate and red alternating (Hilton). 



Type Locality. — Puget Sound. 



Distribution. — Puget Sound to Laguna Beach and Santa Catalina Island, 

 California, 3% to 40 fathoms. 



Biological Survey of San Francisco Bay. — Crago munitella was 

 dredged in 3y 2 to 7 fathoms, from a bottom consisting of angular rock 

 fragments of various sizes, at two adjacent stations, D 5773 and 5775, 

 on each side of Yellow Bluff, south of Sausalito. At the latter station, 

 C. munitella was in company with Scleroplax granulata, while at the 

 former it was associated with Spirontocaris cristata, Crago nigricauda, 

 C. franciscorum, and Cancer productus. The range of temperature 

 and the salinity of the hydrographic stations which may be correlated 

 with the above dredge stations (as given in appendix III, p. 354) are 

 respectively 11.0° to 13.5° C and 26.6 to 31.6. 



Genus Nectocrangon Brandt 



Kostrum wanting. Eyes nearly concealed or hidden by the carapace. Dactyls 

 of fourth and fifth pairs of legs dilated and more or less adapted for swimming. 



Nectocrangon californiensis Rathbun 



Nectocrangon californiensis Eathbun, Proc. U. S. Nat. Mus., 24, 892, 1902; 

 H. A. E., 10, 140, figs. 80, 81, 1904. 



Fig. 71. Nectocrangon californiensis, <$; a, lateral view of carapace and an- 

 terior portion of abdomen, X 2; b, dorsal view of carapace and abdomen, X 2 

 (from Eathbun, U. S. N. M.). 



Characters. — First and second abdominal segments not carinated; third and 

 fourth segments only feebly carinated; each carina of the sixth segment term- 

 inating in a small, sharp tooth or spine. Carapace with only two median spines 

 behind spine on anterior margin which, outside of orbital fissure, is furnished 

 with two spines close together instead of one as in the allied species. Antennal 

 scale with spine extending only slightly beyond the blade. Hands from three 

 and a half to four times as long as wide. 



