COPEPODA COLLECTED IN MALTESE SEAS. Pes 
Dias longiremis, Lilljeborg. 
Found sparingly. 
Acartia laxa, Dana. 
Found in considerable numbers. 
A. denticornis, Brady. 
Less common than A. laza. 
Acartia verrucosa, n. sp. (Pl. VI., figs. 1 to 9). 
Length 1-20th of an inch. Cephalothorax elongated, 
tapering anteriorly and posteriorly ; the posterior angles 
being produced into rounded leafy projections. Anterior 
antenne (fig. 2) about the length of the body, and bearing 
a number of long sete, which like those of the swimming 
feet are strongly verrucose throughout the middle part 
of their length, having the appearance of being formed of 
minute joints. Posterior antenne (fig. 3) have several 
setee on the outer side of the main branch, in addition to 
those at the apex of both branches. The first four pairs of 
swimming feet (fig. 6) are similar to those of A. lara, but 
their setee are verrucose as before mentioned. The fifth 
feet of the male (fig. 7) are prehensile, and are large and 
powerful; one side is extended into a long spinous claw, 
jointed near the apex and terminated by a fine seta; the 
other is three jointed and terminated obtusely. The fifth 
feet of the female (fig. 8) are each composed of one short 
basal joint terminated by a long spine, which is finely 
ciated from near the base to the apex. The abdomen of 
the female (fig. 9) is two jointed, the second joint having 
on each side three or four long plumose sete ; the stylets 
in the female are two long lance-like projections without 
terminal sete. 
Only two specimens, a male and a female, of this 
very remarkable species were found, the male being 
