4, 
St: 
4 
OF NEW ZEALAND. 105 
of antenne shorter than the second, bases in contact, first two or three 
joints dilated and flattened. Second pair slender. Femoral joints of 
the last four pairs moderately thickened and dilated. Caudal appen- 
dages small. 
111. Ceratothoa banksii. 
Cymothoa Banksii, Leach, Dict. Sci. Nat. xii, p. 353, (1818)); M. 
Edw. Hist. Nat. Crust. ii, p. 273, (1840). ? 
Convex, smooth, with the first three segments longer, (in a longi- 
tudinal sense), than the rest; thefirst the longest. Head about as broad 
as long, encased for about half its length in the first thoracic segment, 
narrowing to its anterior extremity, which is rounded, the sides more 
decidedly convergent beyond the extremity of the antero-lateral lobes 
of the first thoracic segment. Eyes scarcely visible. First thoracic 
segment with the antero-lateral lobes broad at base, acute at their 
extremities. Abdomen with the first five segments very short, the 
the sixth, (last), transverse, with the posterior margin nearly straight. 
Caudal appendages very short, with the rami slender acute, nearly 
equal. Superior, (internal), antenne very short, not reaching backward 
to the anterior margin of the first thoracic segment, inferior slightly 
longer. Femoral joints of the last four pairs of legs produced backward 
into a thin laminated plate, the posterior margin of which is rounded. 
Length 13 in. 
New Zealand (Coll. Brit. Mus.). 
M. Milne Edwards gives the Cape of Good Hope (Mus. Paris), as 
the habitat of this species, but his description of the head does not 
seem to me to apply well to the type of C. banksii in the Collection of 
the British Museum, and there is a probability of the species being 
distinct. 
112. Ceratothoa lineata. PI. ILI, fig. 1. 
Ceratothoa lineata, Miers, Ann, Mag. Nat. Hist. (ser. 4) xvii, p. 227, 
(1876). 
Moderately convex, nearly smooth, terminal segment faintly punctu- 
lated. Head small, narrowed anteriorly, front slightly curved down- 
ward. Eyes large. First segment of the body longer than the rest, 
antero-lateral lobes produced very slightly forward, so that the head is 
not as deeply encased as in C, banksit, Epimeral pieces of the last 
