614 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiii. 



The second maxillipeds are niucli enlarged,*^ the terminal claw 

 about the same length as the basal joint and strongly curved near 

 the tip, with a minute accessory seta on the ventral surface near 

 the base. Both joints are very strong and plentifully supplied with 

 powerful muscles. 



The swimming legs are similar to those in Caligus, but much 

 reduced m size. The first pair have a comparatively small basal 

 joint carrying one large spine on its posterior border; the middle 

 joint is of the same size as the basal with a small spine at its ante- 

 rior distal corner; the terminal joint is only two-thirds as large and 

 tipped with the usual three claws and the long spine at the inner 

 distal corner, but there are no plumose setse on the posterior margin 

 of this joint. 



The second legs are of the usual pattern, with large and prominent 

 spines on the exopod. The apron of the third legs is so reduced as to 

 be smaller than the second pair. Hence in a ventral view the third legs 

 do not project behind the second but are covered by the latter. Their 

 rami are so close together that the}^ overlap; the exopod is thi"ee- 

 jointedwith a relatively large basal spine, but with very few plumose 

 setae; the endopod is two-jointed, each joint with a single plumose seta. 



The fourth legs are three-jointed, with four spines; the basal joint 

 about as long as the other two; the inner terminal spine one-half 

 longer than the other three, which are about equal. The fifth 

 legs are entirely wanting in this species. The reproductive organs 

 and muscalature are similar to those in Caligus. The oviducts are 

 coiled somewhat differently in the genital segment, as can be seen in 

 fig. 80. The cement glands are rather large and extend well up 

 toward the anterior margin of the segment. The cellular portion is 

 somewhat club-shaped, wdth twelve to fifteen cells; the duct is 

 enlarged into a sort of reservoir at its base where it leaves the cellular 

 portion, and also bent outward, terminating very close to the base of 

 the egg tubes. The semen receptacle is peculiar in that it is enlarged 

 at either end instead of at the center. 



There is also apparently a large accessory lobe connected with the 

 enlargement at either end, a condition which has not been reported 

 for any other genus. 



Total length, 5.22 mm.; length of carapace, 1.67 mm.; length of 

 genital segment, 1.8 mm.; length of abdomen, 1.6 mm.; width of 

 carapace, 1.67 mm.; length of egg strings, 3.55 mm. 



Color, a transparent cartilage groundwork beautifully penciled on 

 the dorsal surface and the appendages with dichotomously-branched 

 lines of wine-red. Pigment most conspicuous in the thoracic area, the 

 genital segment, and at the posterior end of the abdomen. 



a In Plate LIV these maxillipeds are magnified only half as much as the other 



appendages. 



