76 CRUSTACEA COPEPODA. II. 
close together on the softer skin just behind the ring; each ramus is minute, a little oblong, with two rather 
short terminal sete. 
Male. — This sex is unusually small; the specimen represented in fig. 7b — drawn by the same 
enlargement as the female shown in fig. 7 a — is only 0.135 mm. long; fig. 7 f exhibits the same male highly 
magnified, showing it to be nearly regularly oval, only a little more than one-fourth as long again as broad. 
It is broadest off the base of the maxillipeds, and the head is somewhat longer than the trunk. The frontal 
margin is moderately produced, moderately and regularly convex, without hairs. — Antennulz very short, 
somewhat indistinctly 2-jointed, the first joint somewhat robust and longer than thick, the second small; 
each antennula has some few normal and somewhat short setze and a longer sensory seta. — Antennze wanting. 
— Mouth middle-sized. — Maxillule small; an additional branch could not be discerned with any certainty. 
— Maxille middle-sized; first joint smooth; the claw curved and acute. — Maxillipeds similar to those in 
the female, having the distal joints reduced in size and the end obtuse; bristles could not be perceived on 
any joint. 
The submedian skeleton is somewhat feebly developed, without posterior processes. The protruding 
lateral borders of the head equipped with moderately short hairs. The whole trunk — excepting as usual 
the anterior part of the ventral surface — is covered with proportionately long hairs. Trunk-legs and caudal 
rami wanting. 
Ovisacs. —- It seems to be a rule that the female of this species deposits only two ovisacs, and these 
occupy the lateral parts of the marsupial cavity, having the female between them. Each ovisac is conse- 
quently very large and very oblong (fig. 7 c); the ovisac figured is as long, and half as broad, as a very large 
female, 0.97 mm. long and a little less than half as broad; the ova are rather large and consequently mode- 
rately numerous. 
Larve. — A completely developed specimen (fig. 7 g) taken free in a marsupium is 0.3 mm. long, 
thus somewhat more than twice as long as the male. The cephalothorax is ovate, about one-third as long 
again as broad. On the front, inside the base of the antennulz, a couple of very oblique lists, running from 
the proboscis forwards and outwards to about the anterior angle of the insertion of the antennule. — Anten- 
nulz 2-jointed, first joint distinctly longer than second; sensory seta a little less than half as long as the 
animal. — Antenne as long as the antennule, 3-jointed ; second joint about as long as first and third combined ; 
third only a little longer than broad and terminating in two sete, one of which quite short, the other about 
as long as second joint. — Maxillule rather small; an additional branch could not be traced. — Maxitllee 
middle-sized; first joint shows a distal row of 4 very small, subcylindrical processes, and most probably 
another similar row is covered by second joint in the position drawn; claw without teeth. — Maxillipeds 
middle-sized; second joint somewhat longer than broad and half as long as the third; terminal spine much 
longer than second and third joint together. —- Abdomen middle-sized, moderately robust; first segment 
conspicuously longer than second, and the spines from its postero-lateral angles reach far beyond the end 
of the caudal rami. 
Postlarval Development. — A single pupa (fig. 7 h) was found; it is 0.143 mm. long, somewhat 
longer than broad, ovate, with a short thread near the front end. Antennulee, proboscis, maxillule, maxillee 
