S54 Puget Sound Marine Sta. Pub. Vol. 1, No. 30 



Genus Phyllolithodes 

 1. Phyllolithodes papillosus Brandt. (fig. 7) 



Petalocerus bellianus White. 



"Carapace triangular and covered with strawberry-like tubercles which 

 form a smaller elevated triangle whose sides are parallel to sides of cara- 

 pace ; a pair of large deep pits on the dorsal surface. Rostrum promi- 

 nent, divided into two blunt, diverging, obliquely compressed horns, and 

 bearing on the upper side a high bilobed crest. On the under side of the 

 rostrum there is a spiny process directed forwards and curving slightly 

 upwards, above the base of which is a pair of much smaller spines. Antero- 

 lateral margin constricted behind the hepatic regions. A subacute spine 

 at the outer orbital angle which is directed forwards, downwards, and 

 slightly inward; two spines of unequal length just external to the post 

 orbital ; behind the constriction, the antero-lateral margin is armed with 

 three long, slender, rather blunt spines which exceed the anterior ones 

 in length. The postero-lateral angles of the carapace are produced out- 

 wards into flattened expansions which bear three blunt projections, the 

 anterior one of which is elongated, slightly compressed, projecting up- 

 wards, outwards, and forwards; the posterior projection is short and 

 rounded. Posterior margin of carapace transverse and furnished with a 

 row of rounded tubercles. Antennal acicle furnished with three smooth 

 flattened subequal spatulate processes. The chelipeds are unequal and 

 thickly covered with long slender, more or less compressed, blunt spines, 

 which are longest on the merus and carpus and gradually diminished in 

 size toward the top and lower margin of the hand; the two hands are 

 similar, fingers stout, corneous tipped and excavated, the outer sides fur- 

 nished with numerous tufts of setae. Ambulatory legs subequal, sub- 

 cylindrical, and thickly covered with long spines similar to those of the 

 chelipeds. Basal abdominal segment nearly vertical and deeply pitted 

 on either side like the following segments. 



Length of carapace from tip of rostral horn, 52 mm. ; width between 

 tips of postero-lateral horns 51 mm." (Holmes, 1900). 



Found on rocky shores at extremely low tide. None was found dur- 

 ing the summer of 1916. They were found by Dr. Nathan Fasten on 

 the northeast side of Brown Island (8) in the summer of 1915. 



Genus Rhinolithodes 



1. Rhinolithodes wosnessenskii Brandt. gray-bearded crab (fig. 11) 



Rostrum blunt, short, with a serrated spur extending toward the 

 front and ventral to the rounded knob. Eyestalks spurred on the dorsal 

 surface. Second antennae long, slender, set below the first; antennular 



