230 Transactions.— Zoology. 
Art. XXX.—Additions to the Crustacean Fauna of New Zealand. 
By Gzrorce M. Txomson, F.L.S. 
[Read before the Otago Institute, 22nd November, 1881.] 
Plates XVII. and XVIII. 
Sromapopa. 
Genus Squilla, Fabricius. 
1. S. tridentata, n. sp. 
Carapace quite smooth, broadening posteriorly; its front transverse and 
unarmed, as are its smooth lower margins. Rostral plate triangular, about 
as long as broad, sub-acute. Large prehensile limbs, with the terminal 
joint as long as the hand and furnished with three spines; palm of the 
hand finely serrate. Terminal segment of the abdomen with a very short 
central ridge terminating in a spine, and two lateral ridges similarly spined 
but very imperfectly developed ; posterior border with six short spines, the 
two central ones being articulated and moveable. 
Colour yellowish, with a few minute black dots on the carapace and 
frontal organs. Length, 0°75 inch. 
Hab. Only one specimen was obtained by the dredge in Port Pegasus, 
and apparently—to judge by its small size—it was a very young one. in 
general appearance and in the majority of its characters this agrees with 
S. indefensa, T. W. Kirk ; but that species has nine teeth on the fingers of 
the large prehensile limb, and this feature seems to be very characteristic of 
species, and very persistent. 
Isopopa ABERRANTIA. 
Fam, ANTHURIDA. 
Genus Paranthura, Bate and Westwood. 
(Brit. Sessile-eyed Crust., vol. 2, p. 163). 
Body long and slender. Head distinct from the first segment of the 
pereion. Antenn short, subequal. First pair of legs large and subchelate, 
six succeeding pairs subequal. All the segments of the pleon distinct, and 
carrying six pairs of pleopoda. Middle tail-piece ovate, obtuse. 
1. P. costana, Bate and Westwood (l.c., p. 165, figured). - 
Cylindrical ; segments of the pereion subequal in length. Hand of the 
first pair of legs very large, smooth, and bearing a small tubercle on its 
inner and under surface. The middle tail-piece is smooth and rounded at 
the extremity. All six pairs of pleopoda two-branched ; last pair with ” 
outer branch one-jointed and foliaceous, inner branch two-jointed and 
placed horizontally. 
