of the Fishery Board for Scotland. 392 
least, I prefer to leave them there. The earlier recorded form will be 
described first. 
Description of (?) Letragoniceps malleoluta, Brady. 
The body of this copepod is elongated and slender, tapering more or 
less gradually from the head to the extremity of the abdomen; the 
rostrum is short, the cephalic and thoracic appendages are moderately 
elongate, and the entire length of the specimen figured is ‘89mm. (the 54 
of an inch). The antennules in the female are nine-jointed; the first 
joint is long, and the inner distal angle is produced into a stout and 
somewhat triangular tooth-like process; the next three joints are consider- 
ably shorter than the first ; the last joint is about as long as the fourth, 
but the four joints that precede the last one are small; a moderately long 
sensory filament or asthetask springsfrom the end of the fourth joint as 
shown in the drawing (fig. 10). The antennz, mandibles, and maxille are 
nearly similar to those in Tetragoniceps bradyt.* The posterior foot-jaws 
are three-jointed, but the end joint is very small; there are two terminal 
selzea—one moderately elongate, the other smaller and slightly plumose. 
The outer branches of the first to the fourth pairs of thoracic feet are all 
three-jointed, but all the inner branches are two-jointed. In the first 
pair, which are comparatively slender, the inner branches are elongate, 
the first joint being rather longer than the entire length of the outer 
branches ; the second joint, which is scarcely half the length of the first, 
carries two stout terminal sete—the inner one being the longer ; there is 
also a small seta on the lower half of the inner edge of the first joint. 
The inner branches of the second, third, and fourth pairs are considerably 
shorter than the outer branches; those of the second and third pairs 
extend slightly beyond the second joint of the outer branches; but in the 
fourth pair the inner scarcely reach the middle of the second joint of the 
outer branches, and this difference is owing, in part at least, to the outer 
branches of the fourth pair being proportionally more elongated than the 
outer branches of the two preceding pairs. The fifth pair of feet are two- 
jointed ; the basal joint is foliaceous and somewhat triangular in outline ; 
it is provided with three small sete on the lower half of the inner margin, 
and with a small apical seta. The second joint is elongated and narrow, 
and it tapers gradually till it becomes somewhat attenuated at the 
extremity; this joint is provided with a few small sete on the outer edge 
and one on the inner, and also with a slender terminal hair. The caudal 
segments are slender, and about as long as the last abdominal segment. 
The female carries one ovisac, which contains a few moderately large 
ova arranged in a single series. 
The male differs little from the female, except that the antennules are 
hinged, and otherwise modified for grasping; the fifth pair of feet are 
also less fully developed ; the basal joint is sub-quadrate, and the inner 
portion slightly produced distally and furnished with two moderately 
stout, spiniform apical sete ; the secondary joint is sub-cylindrical, and is 
armed with a moderately stout and elongated spine near the distal end of 
the inner margin. The first abdominal segment in the male bears slightly 
produced lateral appendages provided with three moderately long sete ; ~ 
these appendages are situated immediately posterior to the fifth thoracic 
feet. 
Habitat.—Firth of Forth, off St. Monans ; rather rare. 
Tetragoniceps brevicauda, sp. n. (Pl. XIV., figs. 18-22.) 
As already stated, this copepod does not differ very greatly from 
* Vide Part II. Tenth Ann. Report Fishery Board for Scotl., p. 253, Pl. IX. (1892). 
