AUSTRALIAN HALACOSTBACA. 181 



338. Crangon intermedius. 



Crangon intermedius, Spence Bate, P. Z. S., 1863, p. 503, 

 pi. xli., fig. 6. 



Carapace armed with three teeth on the autero-branchial 

 surface on each side, and a row of minute denticles extending 

 from the extra-orbital tooth posteriorly between the cardiac and 

 branchial regions. Rostrum nearly as long as the eye. Superior 

 antenna? three times as long as the eye, having the rami sub- 

 equal and as long as the peduncle. The inferior antenna? with 

 the squamiform appendage reaching nearly to the extremity of 

 the superior antenna?. First pair of periopoda strong, having 

 the palm oblique, marginate, and armed with alternating long 

 and short hairs. Second pair of pereiopoda not reaching beyond 

 the carpus of the first. Third pair slender and longer than the 

 first, the remaining two shorter. Pleon short, suddenly narrow- 

 ing at the fifth segment. Posterior pair of pleopoda longer than 

 the telson, which is narrow and tipped with two long hairs. 

 [S. 2?.] 



Gulf of St. Vincent, <H fathoms. 



Sub- Fa m ily Gnatli op hy Mince. 



Feet of the second pair stronger than the first. External 

 maxillipedes broad, operculiform. 



Genus Gnathophyllum, Latr. 



339. G-nathophyllum fasciolatum. A.M. 



GnatliophgMum fasciolatum, Stimpson, Proc. Acad. Xat. Sci. 

 Philad., Vol. xii., p. 28. 



Nearly allied to G. elegans, except in regard to the colour. 

 Body thick. Carapace obtusely carinate dorsally, the carina 

 obsolete posteriorly, and anteriorly continuous with the rostrum ; 

 rostrum short, not reaching the apex of the antepenultimate 

 joint of the peduncle of the antennules, obliquely truncate above, 

 a little concave, and six-toothed, the extremity acute, the lateral 

 carina? situated near the smooth inferior margin. Eyes rather 

 large. Caudal segment armed with two marginal spines towards 

 the extremity, and two long spines at the extremity. Body 

 white, pellucid, ornamented with about ten linear transverse 



