NO. 1404. PARASTTTC COPEPODS—rALiaw.E—WTLSON. 659 



The second maxillae are of about the same size as the furoa and are 

 cut beyond their center with divergent ))ranches, of which the inner 

 one is the larger and curved the more. 



The first maxillipeds are of the usual form; the second pair are 

 rather small, the basal joint more than twice the length of the terminal 

 claw; the latter is weak and not much curved. 



The furca is of medium size and cut beyond the center, making the 

 branches longer than the base. The former are conical and widely 

 divergent; the latter is swollen on either side at the center, giving a 

 spindle shape. 



The first swinuning legs have a stout spine upon the outer and another 

 upon the posterior margin of the basal joint. The terminal spines are 

 nearly equal and not pectinate, while the plumose seta3 are rather 

 short. The second legs have large spines upon the outer margin of 

 the exopod; the rami of the third legs are well separated and longer 

 than in most species. 



The fourth legs are large and stout, their tips reaching back beyond 

 the genital segment. They are four-jointed, the basal joint onl}^ half 

 as long as the other three, including the spines. This basal joint has 

 a stout spine on its outer border at a little distance from the distal end. 

 The third joint is longer than the second and fourth and ends in a 

 short spine. There is no spine on the second joint. The terminal 

 spines are strongly curved and var}^ much in length, the inner one 

 being nearl}^ three times the length of the outer. 



The fifth legs are large and prominent and project beyond the pos- 

 terior margin. 



In young females the free segment and genital segment and abdomen 

 are each of nearly the same size, the fourth segment being the widest 

 and the others narrowing slightly in order. The fifth legs project as 

 very large papilla3 from the posterior margin of the genital segment 

 and are much more prominent than even in the adult male. There is 

 no trace of segmentation in the abdomen, but this region is almost 

 exactly like that in the adult male. 



Total length 5.3 mm. Length of carapace 3.2 mm.; width of same 

 3.1 mm.; length of genital segment 1.2 nun.; length of abdomen 

 0.55 mm.; length of egg strings 3.3 mm. 



Color a dull yellow with a slight tinge of brown, with no pigment 

 spots visible in preserved specimens. 



(chiletms, of or belonging to Chile.) 



Male. — Carapace twice the length and more than four times the 

 width of the rest of the body, its own length and width being about 

 the same. Posterior sinuses the same as in the female, but the tho- 

 racic area is relatively smaller and the digestive glands are larger. 

 The free segment is as wide as the genital segment, one-fifth the width 

 of the carapace, and relatively longer than in the female. The fourth 



