158 Rev. T. R. R. Stebbing on the 



Sars (followed in the latter year by Norman and Stebbing) 

 assigns to Leptochelia two characters which are not appro- 

 priate to the type — one, that the upper antennas in the male 

 have the flagellum adorned with bundles of sensitive cilia ; 

 the other, that the outer branch of the uropods is uniarticu- 

 late. He mentions also that the immobile finger of the 

 gnathopods is strongly tuberculate within, whereas in 

 L. minuta it is very weakly tuberculate. Beddard also, 

 in 1886, in his Report on the ' Challenger ' Isopoda, 

 when describing his genus Neotanais, says that, " as in 

 Heterotanais, the exopodite of the uropoda is distinctly two- 

 jointed, and this character distinguishes both genera from 

 Leptochelia, Dana." Lastly Hansen *, in 1895, figures the 

 uropods of his Leptochelia affinis with the outer branch one- 

 jointed. 



Thus we find, according to the various accounts of the 

 genus Leptochelia, that the uropods have no outer branch 

 and that they have an outer branch, and in the latter case 

 that the branch is one-jointed, that it is one- or two-jointed, 

 that it is two- or three-jointed, or that it is two-jointed. The 

 last view I believe to be the correct one, so far as the type 

 species is concerned. 



The following list shows the species which have been 

 referred to Leptochelia, and distinguishes the character of the 

 uropods : — 



Inner branch. Outer branch. 



Leptochelia minuta, Dana, d 6-jointed. 2-joiuted. 



limicola, Harger, $ 4-5-jointed. 2-jointed. 



(This species and Paratanais 

 tenuis, G. M. Thomson, are con- 

 sidered by Sars to belong to his 

 Heterotanais, although Thomson 

 says of his species that the outer 

 branch is 1-jointed.) 



cceca, Harger 2-jointed. 2-jointed. 



(This is referred by Sars to his 

 genus Leptognathia.) 



filum (Stimpson) 4-5-jointed. Nothing known. 



rapax, Harger, J 2 5-jointed. 1-jointed. 



(The gnathopods of the male 

 and, to a less extent, its first an- 

 tennae are remarkably like those 

 of L. minuta.) 



Edwardsii (Kroyer), 3 8-6-jointed. 1-jointed. 



(This is recognized as a synonym 

 of the next species.) 



* In the Ann. & Mag. Nat. Hist, for last month, p. 52, line 13, for 

 " Dr. H. J. Hansen gives," I should have said " Dr. Hansen refers to." 



