of the Fishery Board for Scotland. 



151 



slightly posteriorly into a large somewhat triangular process. The last 

 segment of the thorax and first of the abdomen coalesce, and form in the 

 female a doubly-hooked projection, in the male a long triangular process 

 reaching nearly to the similar projection from the thorax. Anterior 

 antennae in the female eight-jointed, in the male also eight-jointed, but 

 hinged between the sixth and seventh joints. In both sexes the outer 

 margin is set with setae. 



Posterior antennae three-jointed, the first joint having at its apex a 

 small secondary joint bearing setse, the third joint has at its apex three or 

 four long stout set«. 



Second foot-jaw very long and strong, forming a prehensile limb. The 

 four pairs of swimming-feet are nearly equal in length and well provided 

 with setae, some of which are plumose. The fifth pair in the female two- 

 jointed, the joints nearly equal in length and bearing a few setae ; fifth 

 pair in the male one-jointed, long, and curved, bearing two long setae at 

 the apex and one on the outer margin. 



Laophonte liorrida (Norman). — Body elongated as before \ head sepa- 

 rated from thorax ; rostrum long and sharp. On the median line of the 

 back the cephalic segment is produced into one large spine, in the same 

 position, each thoracic and the first two abdominal segments have two 

 spines, and in addition, the first two abdominal segments have a pair of 

 lateral spines, which are marginally ciliated. The posterior margins of all 

 these segments are denticulated. The apex of each caudal segment bears 

 two setae, one very long and stout ; on the outer margin of each segment 

 are three shorter setae. First pair of feet very long, and bearing a slender 

 two-jointed peduncle. It was found in February and March but not in 

 any abundance. 



Laophonte similis (Glaus). — Here the body is more slender than in the 

 last, and it may be distinguished from others of the same genus by the 

 fact that when seen laterally the dorsal aspect presents one uniform line, 

 and is not broken up into a number of ridges by the body segments as in 

 the other species; and also that the inner caudal setae are as long as 

 the entire animal. 



The anterior antennae are eight-jointed, those of the male being clawed 

 at the apex, and with the fourth joint in the shape of a rough pear-shaped 

 swelling. The fifth pair of feet in the female has a large basal joint, 

 bearing internally four strong setae, the second joint has fine setae, and the 

 margins of both are densely ciliated. In the male, the fifth foot is 

 exceedingly small. 



The first abdominal segment has a pair of setose appendages resembling 

 a rudimentary foot. It is an exceedingly minute specimen (g^Qth of an 

 inch, '85 mm. Brady). Several specimens were taken in from three to 

 six fathoms water in March of this year. 



Laophonte lamellifera (Glaus). — The genus Laophonte includes a number 

 of copepods with singularly long attenuated bodies, each segment being well 

 marked in an annular fashion, giving the animal an appearance not unlike 

 that of a caterpillar. L. lamellifera has the margins of all its segments, 

 except the last, denticulated. The caudal segments are somewhat conical 

 and longer than the last abdominal segments; there are two short 

 setae at the apex of each segment. Anterior antennae five-jointed. It 

 was taken in March in from three to four fathoms water, but was not 

 common. 



Thalestris my sis (Glaus). — Body elongated, abdomen particularly slender; 

 rostrum stout and sharp. Anterior antennae nine-jointed. First pair of 

 feet long, with both branches of equal length, outer branch terminating 

 in four distinct claws. Fifth pair of feet in the female expanded into 



