376 Mr. E. J. Miers on Ocypoda. 
Mr. Moore has Burmese specimens of this species in his 
cabinet with ZH. bellona. 
Captain Bingham also took &. excubitor in the Thoungyeen 
valley on the 25th February. 
XL.—On the Species of Ocypoda* in the Collection of the 
British Museum. By Epwarp J. Misrs, F.L.S., F.Z.5., 
Assistant in the Zoological Department. 
[Plate XVII.} 
Havine had occasion to rearrange and rename the specimens 
of this genus in the collection of the British Museum, with 
the aid of Mr. J..S. Kingsley’s recently published revisionf, 
I have thought it would be useful to publish the following 
notes on the species represented in the national collection 
(among which are included nearly all the well-established 
ones), to indicate at the same time the few which are deszde- 
rata, and to describe and figure with more precision than has 
been hitherto done their principal distinctive characters, espe- 
-cially such as are afforded by the form of the antero-lateral 
angle of the carapace (or exterior orbital angle) and by the 
structure of the stridulating-ridge, which is developed upon 
the inner surface of the palm or penultimate joint of the larger 
chelipede in nearly all the species, and to which particular 
attention has been drawn by Dr. J. G. De Man in his careful 
account of the species in the collection of the Leyden Museum. 
In this memoir certain forms are characterized which are 
not included in the revision of the American naturalist, whose 
material seems to have been insufficient for the correct identi- 
fication of some of the Old-World species. 
In the following notes I have usually followed De Man 
pretty closely in his definitions (so far as they serve) ; and I 
* This generic name has been variously written Ocypoda and Ocypode 
by authors. I myself formerly adopted the latter; but perhaps the for- 
mer mode of spelling the word (although not that of Fabricius) is 
preferable, as being etymologically more correct. It would be merely 
productive of additional contusion to adopt (as I have been advised) 
Ocypus in place of either, since this word has been used by a later author 
(Kirby, in 1819) for a genus of Coleoptera. 
+ “ Revision of the Genus Ocypoda,” in Proc. Acad. Nat. Sci. Philad. 
pp: 179-186 (1880). 
{ Notes from the Leyden Museum, iii. pp. 245-256 (1881). 
