154 RATHBUN 



middle of eye-stalk; large cheliped of male elongate, the 



carpus twice, or nearly twice, as long as broad . . longimana. 



B'. Eye-stalks oblong, their inner extremities tuberculiform, and not 



diverging ; cornea in front of middle of eye-stalk ; carpus of large 



cheliped of male very little longer than broad, and very little 



longer, sometimes even shorter, than palm ..... affinis. 



A'. Front with a sharp and prominent median tooth. 



B. Eyes not pigmented, oblong ; large cheliped of male with carpus 

 much shorter than wide ........ goniophthalma. 



B'. Eyes pigmented, tips acute and divergent, cornea behind the mid- 

 dle of the stalk; large cheliped of male with carpus a little 

 longer than wide ..... ....... 



CALLIANASSA CALIFORNIENSIS Dana. 



Distribution. From Mutiny Bay, Alaska (Lockington), to mouth of 

 Tia Juana River, San Diego County, California (Dr. E. A. Mearns, U. S. A.). 



Besides 'published localities, there are in the National Museum speci- 

 mens from Departure Bay, Vancouver Island, British Columbia, and San 

 Diego, California. 



CALLIANASSA LONGIMANA Stimpson. 



Distribution. From Vancouver Island, British Columbia (Bate), to San 

 Quentin Bay, Lower California (Lockington). 



CALLIANASSA GIGAS Dana. 



Distribution. Puget Sound (Dana, Caiman). Gulf of the Farallones, 

 California, 21 fathoms (Albatross station 3150), one fragmentary specimen 

 showing the large cheliped and portion of abdomen. 



CALLIANASSA AFFINIS Holmes. 

 Distribution. From Catalina Harbor to San Diego, California. 



CALLIANASSA GONIOPHTHALMA Rathbun. 



Plate vm. 



Callianassa goniophthalma RATHBUN, Proc. U. S. Nat. Mus., xxiv, 886, 1902. 

 Carapace contained in the abdomen two and a third times. Rostrum 

 triangular, acuminate, reaching barely one third the length of eyes. Lat- 

 eral projections of the front shallow blunt teeth. Behind and parallel to 

 the front there is a sulcus which is continued back, defining the raised 

 area of the gastric region. No median carina, but a slight, blunt elevation 

 near the posterior margin, corresponding to the strong tooth of C. ccecigena. 



