no. 1663. PACIFIC COAST C0PEP0D8— WILSON. 443 



spine; the terminal claw is two-thirds the length of the basal joint, 

 moderately curved, and armed with an accessory spine on its ventral 

 surface near the base. The swimming legs are of the usual pattern; 

 the terminal claws on the first pair arc about as Long as the terminal 

 joint; the spines on the exopod of the second pair arc exceptionally 

 loner and sharp: the rami of the third pair arc close together and 

 small, but are armed with very long seta 1 . The fourth legs arc four 

 jointed, the basal joint with a small spine at the outer distal coiner. 

 a minute spine on the second joint, and three spines in a row at the 

 tip of the terminal joint, the two inner ones being twice the length 

 of the outer. 



Total length, 4 mm. Length of carapace. 2.25 mm. Width of 

 same, 2.37 mm. Length of free segment, 0.4 mm.; of genital segment, 

 1 mm.; of abdomen, 0.4 mm.; of egg strings, 1.6 mm. 



Color (preserved material). — A light straw yellow, deepening on 

 the thicker portions of the body; genital segment and egg strings 

 orange. 



(parvus, small.) 



LEPEOPHTHEIRUS CONSTRICTUS, new species. 

 Plate LXIX. 



Host and record of specimi lis. — A single female specimen was 

 obtained by Doctor McClendon from the outside surface of the 

 spotted cabrilla. Paralabrax maculato-fasciatus, at La Jolla, Cali- 

 fornia. Fortunately the specimen is excellently preserved and bears 

 a pair of fully developed Qii;<x string-. It is made the type of the 

 species and is Cat. No. 38559, U.S.N.M. 



Female. — Carapace orbicular, of nearly the same length and width, 

 and narrowed a little anteriorly. Frontal plates less than half the 

 entire width; lateral areas wide, pushing the lateral groove- Ear in- 

 ward on either side. Median posterior lobe a little more than one- 

 third the entire width, evenly rounded and projecting somewhat be- 

 hind the broad and well rounded lateral lobes. Eyes large and 

 placed well forward. Free segment three-fifths of the width of the. 

 genital segment, narrowed abruptly to half that diameter in front 

 of the liases of the fourth legs. 



Genital segment barrel-shaped, narrowed anteriorly, with nearly 

 straighi anterior and posterior margins, and the lateral margins only 

 slightly convex. It- posterior corners are bluntly squared with no 

 lobe-. Abdomen about one-fourth the width and three-fifth- the 

 length of the genital segment, one-jointed, with its lateral margins 

 concave. Anal lamina' small, each bearing three long terminal setse 

 and another of the same length on the outer margin ai the center. 

 Egg-tubes of the same width as the abdomen and two-third- as long 

 as the entire body: eggs small and numerous. 



