260 Part ILI. —Tenth Annual Report 
Cylindropsyllus nunor. : (Pl. XI. figs. 17-24). Pee mere 
Female.—In the female the body is cylindrical and elongate. Length, — 
exclusive of tail sete, 1 mm., the first thoracic segment ‘nearly as long 
as the next three together, rostrum short with a rounded apex. Anterior 
antennz about as long as the first thoracic segment, seven-jointed; the. 
comparative length of the joints are as shown in the formula 
(1S oe eS 
1 28 Ae 6 37 
Sparingly setiferous. An olfactory filament springs from the end of the 
fourth joint, which is produced to form a base for the filament. The 
posterior antenne, mandibles, maxille, and anterior foot-jaws as in Tetra- 
goniceps incertus. Posterior foot-jaw two-jointed and armed with a long, 
stout, terminal claw which is ciliate on the inner margin of the distal half. 
A spine springs from the end of the first joint and projects forward so as to 
be opposed to the extremity of the terminal claw. The outer branch of the 
first four pairs of swimming feet three-jointed, the inner branch of the first 
and fourth pairs two-jointed, of the second and third one-jointed, the inner 
and outer branches of first pair nearly equal, but the inner rather longer, 
sparingly setiferous. The one-jointed inner branch of the second and | 
third pairs shorter than the first joint of the outer branch, and terminating 
in a short stout spine ; a moderately long slender hair springs from near 
the middle of the one-jointed inner branch of the third pair. The outer 
branch of the fourth pair is nearly twice as long as that of any of the 
preceding pairs. The two first joints are about equal in length ; the last 
is rather shorter, and furnished with one very short and three long sete. 
The inner branch, which is two-jointed, is scarcely longer than the first 
joint of the outer branch, and provided with a short terminal plumose spine 
or stout sete. Fifth pair foliaceous, small, one-branched, the posterior 
_margin armed with six plain sete, and, exteriorly, with a stout spine. 
Abdomen four-jointed, first segment rather longer than any of the other 
three. Caudal stylets about as long as the last abdominal segment, 
slightly divergent, and bearing a lanceolate spiniform terminal process and 
a few very small hairs. Ovisacs two, each with four ova placed end to 
end as shown in the figure. 
(?) Etchomotgus littoralis,* n. sp. (Pl. X. figs. 1-9). 
Male.—Length about 1:12 mm. (exclusive of tail sete). In form some- 
what like Lichomolgus arenicolus. Anterior antenne short, seven-jointed, 
the proportional length of the joints as shown by the formula t 
16924 2122723 2b 18? 16 
Oe rin aa eEa 7 | 
All the joints more or less setiferous ; the second joint is furnished with a 
number of moderately short, and two long sete. Posterior antenne stout, 
four-jointed, the length of the joints gradually decreasing, the last about 
as broad as long, quadrangular, and bearing about six long, unequal, and 
plain terminal hairs and one plumose seta, the exterior margin of the 
‘second and third joints ciliated. Two spines, one of which is stout and 
strongly curved, and two sete, spring from the exterior distal angle of the _ 
third joint as shown in the figure. There is no secondary ap- 
pendage to the posterior antenne. Mandible stout, consisting of a prone 
* Of or belonging to the shore. 
+ When first examined the three last joints of the anterior antennz were bsehtOn railed im 
to be nearly equal in length, but the last one became detached before the joints were 
‘measured, The length stated, though closely approximate, may therefore not ge eee 
correct. © 
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