100 STALK- AND SESSILE-EYED CRUSTACEA 
concave above, narrowed posteriorly, scarcely reaching beyond the 
latero-posterior angles of the penultimate segment. Caudal appen- 
dages very short, reaching a little beyond the apex of the terminal 
segment, the larger (exserted) ramus ovate. Legs armed with slender 
acute spines. Colour light chestnut brown. Length 3 in. 
New Zealand (Coll. Brit. Mus.). 
Specimens from Tasmania and Melbourne are rather narrower and 
of a darker colour, but I do not consider them specifically distinct. 
P. graniger is very nearly allied to P. gemmulatus, Dana, from 
California; but differs in the much shorter broader-ovate caudal 
appendages, and in the spines of the legs, which are not laminated as 
in that species. 
107. Porcellio zealandicus. Pl. H, fig. 7. 
Porcellio zealandicus, List. Crust. Brit. Mus. p. 99, (1847), sine 
descr. ; Miers, Ann. Mag. Nat. Hist. (ser. 4) xvi, p. 225, (1876). 
Elongate oblong, finely granulous, the granules seriate on the poster- 
ior margin of each segment. Head small, transversely oblong, with 
the latero-anterior angles not prominent. Segments of the thorax 
(the last excepted), with the posterior and infero-lateral margins 
straight, the infero-posterior angles obtuse, last segment of the 
thorax broad, with the posterior margin concave, the infero-lateral 
margin straight, the infero-posterior angle acute. Segments of the 
abdomen considerably narrower than those of the thorax, short; 
terminal segment equilaterally triangular, slightly concave above, 
sides straight. Caudal appendages with the base shorter than the 
terminal segment, the longer (exserted), ramus narrow, acute, project- 
ing beyond the terminal segment to a distance equal to its own length. 
External antenne very long and hairy. Length nearly 3 in, 
New Zealand (Coll. Brit. Mus.). 
Sub-Family II. Scypwacina. 
Scyphacme, Dana, U.S. Explor. Exped. xiv, Crust. part ii, p. 716, 
(1853). 
External antenne not geniculate at the fifth joint. Base of the 
caudal appendages short or oblong, the inner ramus sometimes alto- 
gether exposed, (Maxillipeds two-jointed, the second joint lamellate), 
