574 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.55. 



ward until they reach the ventral body wall. Dorsal to the intestine 

 the processes have also widened, but there is still a space on either side 

 between the rows. 



The ovaries now reach back to the anterior ends of the cement 

 glands, and the oviducts are apparently given off from their posterior 

 ends. These oviducts are coiled to the right and left in the space 

 between the ovary (anteriorly) and the cement glands (posteriorly), 

 and the intestinal processes on either side, and the coils are separated 

 by strands of dorsoventral muscles, whose contraction helps to pass 

 the eggs along the oviducts. The eggs are separate, and although in 

 places they are close enough together to become somewhat flattened, 

 they are never crowded. They finally issue into the external sacks at 

 the posterior end of the genital segment, close to the median line. The 

 cement glands are at the extreme posterolateral margin of the trunk, 

 close to the body wall. They are long and slender and curved into the 

 form of a parenthesis mark ; they do not show regular segmentation ; 

 the ducts from these glands are short and threadlike and enter the 

 oviduct just inside the vulva. 



Specific characters of male. — In addition to the generic characters, 

 already given we may add that the basal joint of the first antennae is 

 much the largest, the second and third joints are about the same size, 

 and the terminal joint is tipped with two stout spines. The basal 

 joint of the second antennae is twice as wide as long and unarmed, 

 the second joint is the same width and length as the basal one, with 

 a short spine at the outer anterior corner and on the inner margin a 

 wide process armed with three stout spines; terminal joint half the 

 width and length of the second joint and tipped with three stout 

 spines. Second maxillae, two- jointed, joints stout and swollen, the 

 basal one the larger, the terminal one tipped with a strong, bluntly 

 pointed claw, bent into a half circle ; on the inner margin of the joint 

 near the tip is a short and stout spine. Basal joints of the maxilli- 

 peds fused across the midline; terminal joints rather slender and 

 tipped with a chela, a strong claAv on the anterior corner shutting 

 down into a sheath on the opposite margin. 



Color (preserved material) a uniform yellowish white. Total 

 length, 2 mm. ; width, 1 mm. ; greatest thickness, 0.50 mm. 



(Jumpi, the specific name of the original host). 



Newly hatched larva. — The present author has never seen the 

 larva, but Kr0yer gave two figures ^ vv'hich he designated " Pullus ex 

 ovo productus," and which show several interesting features. The 

 dorsal view looks somewhat like a nauplius, but lacks the balancers 

 at the posterior end of the body; the side view shows unmistakably 

 that it is not a nauplius, but a much more advanced larva. The first 



* Naturhistorisk Tidsskrift, ser. 3, vol. 2, pi. 18, fig. 5, f and g. f^' 



