MARINE COPEPODA OF NEW ZEALAND. 35 
Male.—Cephalothorax and abdomen as in the female except that the abdomen is 
five-jointed ; none of the caudal sete have dilated bases (fig. 23). Eighteenth joint 
of the right antennule (fig. 21) very faintly serrulated. Fifth foot (fig. 22) of the 
right side strongly prehensile, basai joint large, subquadrate, and produced into a Jong 
curved claw which opposes the three-jointed outer ramus; first joint of the outer 
ramus about twice as long as broad, second and third not much longer than broad and 
bearing respectively one and two short marginal spines ; fifth foot of the left side short, 
simple, three-jointed, last joint forming a short curved unguis. 
Hab. Taken plentifully in the surface-net in the Bay of Islands and Otago Harbour, 
also at a depth of 6 fathoms in Auckland Harbour. 
Of all the specimens examined not one was found in perfect condition, and all were 
very brittle and opaque owing to the action of picric acid preservative. The species is 
very closely allied to the well-known 1’. longicornis of European seas, but there is no 
serration of the right male antennule, except on the eighteenth joint ; the widely- 
dilated tail-seta of the female is characteristic, and the serratures of the spines of the 
swimming-feet are much fewer and larger than in 7. longicornis. 
Genus Crntropaces Kroyer. 
1. CENTROPAGES DISCAUDATUS, sp. nov. (Plate X. figs. 1-7.) 
? Centropages typicus Kroyer, var. aucklandicus Kriimer (1), pl. xv. figs. 1-5, p. 217. 
Female.—Antennules very slender, 24-jointed, reaching considerably beyond the 
posterior end of the cephalothorax. Infero-posteal angle of the cephalothorax produced 
on each side into a long spine. Abdomen (fig. 6) three-jointed; first joint dilated 
proximally and bearing on its dorsal margin a slender plumose seta; second joint 
longer, much dilated proximally ; third very short, constricted proximally ; furcal joints 
short, not much longer than broad, almost square as seen from above (fig. 7), distally 
truncated and bearing five rather short terminal sete, three of which are bulbously 
dilated at the base. Outer branch of the fifth pair of feet (fig. 5) having its second 
joint produced inwardly into a very stout and long spine. 
Male.—Infero-posteal angles of the cephalothorax spinous, but not so strongly as in 
the female; abdomen four-jointed, all the joints subcylindrical (fig. 1), furcal joints 
cylindrical, about twice as long as broad, terminal sete not swollen at the base; the 
first abdominal segment short, the following three nearly equal, not very much longer 
than broad and altogether devoid of spines. Basal joints of the antennules (fig. 1) 
almost devoid of marginal processes or teeth; joints from the 15th to the 18th much 
swollen, the 15th and 16th each bearing a strong marginal spine ; the three following 
joints densely pectinated with fine sete (figs. 2,8), which, at the base of the 17th joint, 
are replaced by a series of small squared tubercles. Outer branch of the fifth pair of 
feet of the right side (fig. 4) terminating in a chelate joint, the blades of which are 
