OF NEW ZEALAND. 47 
Milne Edwards under the name of A. gibbesii, is not distinct. — Stimp- 
son united it with the planissimus. 
M. Milne Edwards, in his description of this species given above, 
probably makes mention only of the me tian lobe of the front. There 
are, in adult specimens, six marginal frontal spines, two to each lobe, 
and six behind them, twelve in all. The third joint only, of the 
ambulatory legs, is armed with a series of spines. 
Family HI. PINNOTHERIDZE. 
Pinnothériens, M. Edw. (part) Hist. Nat. Crust. ii, p. 28, (1837). 
Pinnotheride, Dana, U.S. Explor. Exped. xii, Crust. part i, p. 309, 
(1852). 
Carapace obese or depressed, rounded on the sides, of soft consistency’ 
Eyes very short, imbedded in the orbits. Buccal organs very variable. 
Margin of the efferent branchial channel partly defined by a ridge on 
the palate. Abdomen of the male narrow, toward the base much 
narrower than the adjacent part of the sternum. Legs usually small, 
weak, 
The species are all small. 
Sub-Family I. Priynornerm2. 
Pinnotherine, Dana, U.S. Explor. Exped. xiii, Crust. part i, p. 378, 
(1852). 
Usually obese, sometimes depressed. Second joint of the external 
maxillipeds small or obsolete. 
PINNOTHERES. 
Pinnotheres, Latr, Hist. Nat. Crust. vi, p. 78, (1803); M. Edw. 
Hist. Nat. Crust. ii, p. 80, (1837); Dana, U.S. Explor. Exped. xiii, 
Crust. part 1, p. 378, (1852). 
Body very obese, surface perfectly smooth. Front not united 
with the epistome. Fosse of the internal antenne often coalescent, 
Eyes very small, placed near to one another. Buccal cavity rounded in 
front, second joint of the external maxillipeds small ‘or obsolete, 
Ambulatory legs slender, sub-equal. 
