COPEPODA OF LIVERPOOL BAY. 141 
6. Laophonte denticornis, T. Scott, 12th Ann. Rept. 
S.F.B., part 3, p. 246. Length *85 mm. 
A slender species, not unlike L. serrata at first sight, 
but on closer examination, is seen to be quite distinct. 
From the same gathering as the last, which contained 31 
species of Copepoda. 
7. Leptopsyllus intermedius, 'T. and A. Scott, Ann. and 
Mag. Nat. Hist., Ser.6, vol. XV., 1895. Length‘57 mm. 
This little species belongs to a curious genus, the mem- 
bers of which, from the structure of their appendages, 
appear to live entirely amongst the mud and sand, and 
have not apparently so far been obtained at any depth. 
In material collected from holes dug in the sand in front 
of the Laboratory at Port Erin; common. Jan., 1897. 
Leptopsyllus herdmant, n. sp., Pl. VIIL., figs. 1—9. 
Description of the female :—Length, exclusive of caudal 
sete, 65 mm. (2, of an inch). Body, seen from above, 
elongate and moderately robust. Antennules short and 
stout, composed of eight joints, of which the sixth and 
seventh are the shortest, as shown by the following 
formala— 
Proportional length of 
the joints Se cel Se 4 LOS hd 
Number of joints ia 2 eet ars Oy On ale gS 
Antenne and mouth organs (figs. 1—4) nearly similar to 
those of L. robertsont, T. and A. Scott. Both branches of 
the first pair of swimming feet (fig. 5) composed of two 
joints, the basal joint of the inner branch reaches con- 
siderably beyond the end of the outer branch; second 
joint very short, being only about one-sixth the length of 
the basal joint, and having at its apex one short and one 
moderately long seta. The second joint of the outer 
branch is furnished with four moderately long sete, all 
