~~ oO 
Amphitrite Edwardsit. 
Tnter-antennal front four-toothed, the teeth rounded, and the central emar- 
gination by far the deepest. A deep sinus between the front and the pre-or- 
bital tooth, which is two-lobed; thus there are altogether eight teeth between 
the eyes. Antero-lateral margin nine-toothed, the teeth alternately large and 
small, commencing with a post-orbital. Meros of left cheliped (the right is 
wanting in our specimen) with four teeth on the inner margin, the tooth next 
carpus much smaller than the others. Carpus with a long spine on the 
inside, and four spines on the outside. Manus with three spines above, 
and three rows of small tubercles on the outside. Fingers sulcate, tubercu- 
late on inner border. Two transverse ridges across the carapax, one in the 
center of the length, divided into three portions by the sulci separating the 
central region from the antero-lateral ones; the other shorter, crossing the 
central region in its widest portion. These ridges are beaded. 
Length, 0.87. Width, 1.25. 
The specimen is a male, and was brought from Mazatlan by Mr. Hy. Ed- 
wards. This, and Lupa bellicosa Sloat, are the only Portunide yet known on 
the Pacific Coast north of Central America. 
Betceeus equimanus, n. s. 
Base of inner antenne three-fourths the length of base of outer antennae, 
flagella about half as long as those of the external antenne. Outer append- 
age of inner antennie about two-thirds aslong asthe inner. External antenne 
considerably more than half as long asin the body. Outer maxillipeds as 
long as base of inner antenne. Hands of first pair of legs about equal in 
size, oblong ovate; dactylos with a sharp recurved point, and a straight cut- 
ting edge margined with setw; the cutting edge is opposed to a similar straight 
cutting edge, also margined with set, on the palmar surface, which also ends 
in a sharp incurved point. The fingers gape somewhat at the proximal end, 
where they are tuberculate. Second pair of feet slenderer than the third and 
fourth; but not much longer. 
Front curvately emarginate between the eyes, which are clearly visible 
through the projecting part of the carapace. Carapace recurved. Body con- 
siderably depressed. Epimera (Coxe) of second abdominal segment large, 
overlapping those of the adjoining segments. 
Length of larger specimen, 1.05. 
Two specimens, both females with ova, which in one case are large and 
evidently mature. 
This species lives under the mantle of Haliotis rufescens, and the specimens 
were procured at Catalina Island by 8. A. L. Brannan. Color in alcohol, a 
light flesh color, the liquor itself taking the same tint; when fresh, a dark 
purp’e. 
Alpheus cliamator. 
Front tri-spinose, the largest point forming the rostrum, and slenderer 
than the others, from which it is separated by a deep sulcus; the lateral spines 
quickly widening out into a shield curved closely over the eye, Carapace 
