56 RATHBUN 



Off Strait of Fuca, 142 fathoms, station 3457. 



Strait of Fuca, 53-136 fathoms, stations 3446-3449, 3451, 3452, 3456, 



345 8 -346o, 3596, 3597. 



Puget Sound, 82-135 fathoms, stations 3067, 3068. 

 Off Tahwhit Head, Washington, 178 fathoms, station 3076. 

 Stations 3675, 3676 (locality not given), no and 122 fathoms, 



Family HIPPOLYTID^E. 

 Genus Hippolyte Leach. 



HIPPOLYTE CALIFORNIENSIS Holmes. 



Distribution. From Sitka, Alaska, to San Diego, California. Speci- 

 mens are in the National Museum from Sitka, 10 fathoms (Harriman 

 Expedition, one specimen) ; Barclay Sound, British Columbia (Albatross, 

 one specimen) ; Puget Sound (T. Kincaid, several specimens) ; Bodega 

 Bay, California (determined by S. J. Holmes); San Diego, California 

 (Albatross). 



The Sitka specimen, about 24 mm. long, has on the rostrum 3 teeth 

 above on basal half, below 3 near the middle and i near the tip. The 

 example from Barclay Sound has 2 teeth above on basal half, and i near 

 the tip, below 2 near the middle and i near the tip. In a lot of eleven 

 specimens from Puget Sound, the dorsal teeth are usually 2 (in one 

 case 3) on basal half of rostrum, and i or none near tip. In the few 

 individuals from San Diego the rostral teeth are typical. 



Genus Hippolysmata Stimpson. 

 HIPPOLYSMATA CALIFORNICA Stimpson. 

 Distribution, From Santa Barbara to San Diego, California. 



Genus Spirontocaris Bate. 

 (Includes Heptacarpus Holmes.) 



KEY TO THE SPECIES OF SPIRONTOCARIS. 



A. One or more supraorbital spines present. 



B. Rostrum subcircular. Median spines of carapace compound or 

 formed by short transverse rows of small spines. 3 or 4 supra- 

 orbital spines prionota. 



B'. Rostrum not subcircular, usually elongate. Median spines of 

 carapace simple, or not formed by transverse rows of small 

 spines. Not more than 2 supraorbital spines. 

 C. First to third abdominal segments laterally acute or spinous. 

 D. First and second abdominal segments armed with slender 

 spines. Rostrum narrow grcenlandica. 



