G. M. Taomgon.—New Zealand Crustacea. 288 
Sub-tribe TII. Cymothoidea. 
Fam. I. Cymothoide. 
Genus Ceratothoa, Miers’ Cat., p. 104. 
5. Ceratothoa trigonocephala. 
Cymothoa trigonocephala, M. Edw. Hist. Nat. Crust., iii., p. 272. 
Head small, triangular, having the antero-lateral margins very concave 
above the antenns, and the front narrow but obtuse, and projecting a little 
beyond the base of the inner antenne. Eyes very distinct. Outer antenna 
considerably longer than the inner. Anterior margin of the first thoracic 
segment produced a little at the corner upon the head so as to give rise to a 
tooth upon the median line; antero-lateral prolongations of medium size, 
narrowing in front, but rounded and not reaching to the base of the outer 
antenns. First segment of the abdomen about a third less than the second, 
which exceeds on each side the margin of the last thoracic segment.  Pos- 
terior margin of the fifth segment very sinuous, and presenting a deep, 
median indentation. Sixth segment large, but gradually narrowing from 
the base, rounded posteriorly, and not nearly so far extended as the terminal 
plates of the lateral appendages, Length 1:6 inch. (My specimens are 
about 1 inch long). 
Dunedin. 
This species is also found in the Australian and Chinese Seas. 
Fam. III. Spheromide. Miers’ Cat., p. 109. 
Genus Amphoroidea, M. Edw., Hist. Nat. Crust., iii., p. 222. 
Body eonvex, somewhat oval and flexible. Head quadrilateral, broader 
than long; eyes small, occupying the lateral margin; anterior margin of 
the head with five small teeth. Basal joint of inner antenne very large, 
lamellate, quadrilateral, broader in front than behind, horizontal, and in 
contaet with its fellow; second joint small, inserted at the side of the first, 
near its posterior angle; the rest almost moniliform. Outer antenne in- 
serted under the inner and directed forwards; the peduncle cylindrical, 
terminal joint longer than that of the inner antenne. Abdomen broader 
than thorax; last joint large, seutiform and deeply exeavated below. 
6. Amphoroidea falcifer, Hutton, MS. Cat. Fig. A.5. 
Smooth, sub-depressed, rounded on the back. Head broader than long, 
the anterior margin three-lobed, the middle one pointed and acute; lateral 
margins hollowed; posterior margin straight, sub-sinuated, produced 
posteriorly on either side into a truncated lobe. Basal joint of inner 
antenne longer than broad, the anterior margin convex, the outer side 
straight, the posterior side bilobed, fitting into the lobes of the head. 
Outer antenne reaching to the middle of the third thoracic segment. 
Last segment of the tail triangular, bidentate at the tip. Outer ramus of 
YA 
