34 PROCEEDINGS OF THE CALIFORNIA 



Crangon nigromaculata . 



Carapace with a single spine on the gastric region near the rostrum, and 

 a larger spine on each hepatic region. Suborbital and antennal spines pres- 

 ent. Inner antenna? about equal in length to movable scale of outer anten- 

 nae, and the base of outer antennae about half as long as its movable scale; 

 Dactylos of first pair of feet transverse, short; an oval black spot on each 

 side of the abdomen just anterior to the caudal processes. 



Three specimens from San Diego, dredged in six fathoms of water. 



Total length of largest specimen from tip of antennal scale to tip of tail, 

 2% inches; of body from tip of rostrum, 2.06 inches. 



This species can readily be distinguished from all others by the black spot 

 upon each side of the tail; it appears to be nearly* allied to C. nigricauda.— 

 Stimpson. 



Crangon Alaskensis. 



Rostrum very short and pointed; spines of carapace, as in nigromaculata: 

 inner antenna? scarcely as long as movable scale of outer antenna?; movable 

 finger of first pair of legs rather long, oblique; hands, carapace, and abdo- 

 men in preserved specimens (alcoholic), clothed with minute black spots. 



This species may be distinguished from C. nigricauda, which it much resem- 

 bles, by the greater obliquity of the palm of the hand, the different coloration, 

 and the smaller size. 



Length of body, 1.45 inches. 



Several specimens from Mutiny Bay, Alaska, presented by the U. S. Coast 

 Survey. 



Alpheus bellimanus. 



At the time of the publication of Stimpson 's Crustacea and Echinodermata 

 of the Pacific Shores, no species of Alphceus had been detected in California, 

 but recently two species have been collected by Mr. Henry Hemphill, of 

 San Diego. The present species may be easily recognized by the beautiful 

 coloring of its hands, which, in a dried specimen, are orange, with various 

 spots and workings of black and white. 



Movable finger of larger hand small, depressed, and closing in a plane 

 oblique to that of the manus, which is furnished with a spine on its outer 

 edge, and a second beneath, has a toothed margin opposed to that of the 

 dactylos, and presents two longitudinal grooves on its under surface, the ante- 

 rior groove terminating in a transverse depression; in the smaller hand the dac- 

 tylos is laminate and in the same plane with the hand, which has an exterior 

 spine like that of larger hand, and another on its inferior surface. The fixed 

 finger of the larger hand is longitudinal, and has an almost straight edge; 

 the annulations of the carpus of second pair are only four in number; there 

 is no tooth on the lower apex of the third joint of the third and fourth pairs 

 of legs. 



Two specimens from San Diego, found among kelp. 



Length of larger specimen, from joint of rostrum to end of abdomen, 1.20 

 inches; length of larger hand, half an inch, of smaller, 0.38. 



The carapace presents traces of a similar coloration to that of the hands. 



