i^ 21 ] Schmitt: The Marine Decapod Crustacea of California 155 

 Cryptolithodes sitchensis Brandt 



Plate 20, figures 3 and 4 



Cryptolithodes sitchensis Brandt, Bull. Phys.-Math. Acad. Imp. Sci. St. 

 Petersb., 11, 254, 1853; Holmes, Occas. Papers Calif. Acad. Sci., 7, 

 125, pi. 2, figs. 21-25, 1900. 



Fig. 100. Cryptolithodes sitchensis, natural size. 



Characters. — Carapace usually about one and two-thirds as wide as long, with 

 lateral expansions produced forward almost the entire length of the rostrum, at 

 least two-thirds its length, forming a large, deep, rounded orbital sinus on either 

 side. Bostrum widened toward distal end, which is transverse, with distinct antero- 

 lateral angles and often, but not always, with a small median tooth. Hands smooth, 

 with but a single, usually very faint rounded, longitudinal ridge a little below the 

 middle of the outer surface. Abdomen smooth, lateral plates flat. 



Dimensions. — Type : length of carapace 23.9 mm., greater width 57.2 mm. 

 Of specimens examined by Holmes: males, length of carapace 16 to 47 mm., width 

 23 to 64 mm.; females, length of carapace 25 to 36.5 mm.., width 36 to 49.5 mm. 

 Length of carapace of specimen listed below 40 mm. 



Color. — Males, in fresh condition, uniform bright red color ; females, red but 

 with a purplish tinge, irregularly marked with blotches of a lighter color (Holmes). 

 Also reddish in alcohol. 



Type Locality. — Sitka, Alaska. 



Distribution. — From Sitka, Alaska, to Pacific Grove, California. 



Remarks. — The specimen figured is one given me by Mr. D. L. Emery, who 

 collected it at Tunitas Glen, July 4, 1913. 



Genus Lopholithodes Brandt 



Carapace broad, pentagonal or hexagonal above, with margins and upper sur- 

 face armed with setose tubercles and fewer, more or less prominent, subconical 

 ones; a peculiar smooth, wart-like prominence occurs on either side of the median 

 gastric area. Ambulatory legs short, tuberculated, and capable of being folded 

 under the carapace. Basal (second) segment of abdomen entire, the three follow- 

 ing segments with lateral plates, also with small marginal plates on one or both 

 sides; penultimate joint devoid of lateral plates, telson very small. 



