76 Miscellaneous. 
three crocodilians occurring in Senegal—an olive and a black crocodile, 
and a false gavial. There are constantly received from the Gambia 
and various parts of the west coast of Africa only three species of 
erocodilians, viz.:—1. Crocodilus vulgaris, which is olive ; 2. C. fron- 
tatus, which is black, and is known, on the coast, by the name of the 
Black Crocodile, or Black Alligator; and 3. a gavial-like crocodile 
(C. cataphractus, Cuvier). ; 
If the “« Crocodile noire” is not C. frontatus, then Adanson, one of 
the most intellectual and advanced naturalists of the last century, 
must have entirely overlooked the latter, and have given the name 
of the black crocodile and the false gavial to C. cataphractus, which 
is more like a gavial than a crocodile. 
Dr. Strauch’s Essay is a very elaborate and careful compilation, 
stating many things as positive which he could not have verified by 
the examination of specimens; for, unfortunately, the collection 
under his care is very small, and consists chiefly of very young spe- 
cimens, and he does not appear to have visited other European or 
American collections: in fact the materials are not sufficient to be 
the basis of a monograph of crocodilians of any authority or origi- . 
nality. 
Rare British Sharks. 
The British Museum has lately received from Mr. William Laughrin, 
of Polperro, a specimen of the spinous shark (Zchinorhinus spinosus), 
7 feet long, and of the six-gilled shark (Heaanchus griseus), 6 feet 
long. These fish have each been recorded only once before as having 
occurred on the British coast.—J. E. Gray. 
The Australian Representative of Cynthia cardui. 
To the Editors of the Annals and Magazine of Natural History. 
GrnTLEMEN,—In most works referring to the distribution of the 
English Cynthia cardui, or Painted-Lady Butterfly, it is said to be 
common in Australia. There is in abundance, about Melbourne and 
in many other parts of Australia, a Cynthia with the general ap- 
pearance and habit of the C. carduz so closely represented that every 
entomologist I know refers it to that species. The Australian spe- 
cies differs from the European one constantly, however, in haying 
the centres of the three lower round spots on the posterior wings 
bright blue, and having two other blue spots on the posterior angles 
of the same wings, the corresponding parts of the European form 
being black. 
As the collector I employ for the museum here, Mr. W. Kershaw, 
mentioned this to me six or seven years ago, and I have found the 
character constant in all the specimens I have examined since, I 
should wish to draw attention to the fact by naming the Australian 
insect Cynthia Kershawi. 
I have, &c., 
Freperick M‘Coy. 
