240 Messrs. T. and A. Scott on some 
triangular apex. Body narrow, tapering slightly and evenly 
to the caudal extremity (fig. 4). Anterior antenne (female) 
six-jointed, stout, each of the third, fifth, and sixth joints 
armed with a strong setiferous spine on the upper aspect; the 
upper distal angle of the third joint is produced and forms the 
base of a stout olfactory appendage; the formula shows the 
proportional length of the joints— 
9710 38..3 54 .10 
Female anterior ant ae : 
emale anterior antenne I 9 8°45 6 
Posterior antenne somewhat similar to those of Cletodes linearis, 
Claus, but rather shorter and stouter. Mouth-appendages also 
somewhat similar to those of that species. Inner branches of the 
first thoracic feet obsolete and replaced by a dagger-shaped 
setiferous spine; the second joint of the outer branches is 
furnished with a small plumose seta on the inner edge and a 
stout conical spine springs from the outer distal margin of 
the first and second joints, while the third joint is provided 
with five spiniform sete round its extremity and outer edge 
(fig. 9). The inner branches of the next three pairs are 
nearly alike, except that those of the second and third pairs 
are rather longer than the first two joints of the outer branches, 
while those of the fourth pair scarcely reach to the end of the 
second joint; the inner branches of the third pair in the male 
are slightly shorter than in the female, and armed with a 
terminal conical spine, as shown in the figure (fig. 13). 
Caudal stylets broad, subovate, nearly straight on the outer 
edge and convex on the inner, and provided with a few small 
lateral and terminal sete. 
Hab. Among Filograna implexa, brought up in the trawl- 
net in the Moray Firth. 
Remarks. In form and in many of its details this curious 
species is closely allied to Cletodes, but the remarkable struc- 
ture of the first thoracic feet is so much at variance with the 
characters of that genus as to render its position in Cletodes 
untenable. 
PSEUDANTHESSIUS, Claus. 
This genus of the Lichomolgide is distinguished from its 
allies by the structure of the mouth-appendages, and espe- 
cially of the fourth pair of thoracic feet, the inner branches of 
which are one-jointed (fig. 20). Two British species of 
Pseudanthessius have already been described, viz. Pseudan- 
thessitus liber (B. & R.) and Pseudanthessius Thorellit 
(B. & R.)*. We have now to record a third species, which 
* Mon. Brit. Copep. vol. iii. pp. 44 and 47. 
