64 DR A. GUNTHER ON THE ZOOLOGICAL [ Feb. 6, 
12. Eunica C&RULA. 
3. Exp. 2:4 in. Allied to Z. tatila, H.-Sch. (Aussereurop. Schm. 
f. 69-72), ex Haiti, but differing in the greater extent and more 
purple tinge of the blue of the wings, which in Haitian specimens 
(agreeing fairly with H.-Schaffer’s plate) is of a paler tint. Beneath, 
the posterior wings are deeper brown, and the markings much less 
distinctly defined. 
Hab. Guatemala. Maus. nostr. 
6. Account of the Zoological Collection made during the 
visit of H.M.S. ‘ Peterel’ to the Galapagos Islands. 
Communicated by Dr. Axsert Ginruer, F.R.S., 
V.P.Z.S., Keeper of the Zoological Department, British 
Museum. 
[Received January 29, 1877.] 
(Plates XI.—XIII.) 
The circumstances under which the zoological collection’ described 
in this paper was obtained are, shortly, the following. By direction 
of Rear-Admiral the Hon. A. A. Cochrane, who then commanded 
the Pacific Station, Commander W. E. Cookson proceeded in H.M.S, 
‘ Peterel,’ in June 1875, for a short cruise in the Galapagos archi- 
pelago. His whole stay was limited to a fortnight, in which time 
he landed on Charles and Abingdon Islands, and at Tagus and 
Iguana Coves in the Albemarle Islands. These, at least, were the 
localities where Commander Cookson, assisted by Staff-Surgeon 
Bett, collected the zoological objects which, by direction of Admiral 
Cochrane, have been deposited in the British Museum. 
Valuable as this contribution to our knowledge of the Galapagos 
fauna is, it serves at the same time to show how incomplete is our 
acquaintance with one of the zoologically most interesting stations. 
But for Commander Cookson’s timely visit, the Abingdon Tortoise 
would, in all probability, have disappeared, unknown as if it had never 
existed, or leaving only some fragments of its osseous frame. Per- 
haps we may hope that the success which attended Commander Cook- 
son’s search may encourage others to complete the work commenced 
by Fitzroy and Darwin. 
For the convenience of the student of this fauna, it seemed de- 
sirable to keep together in a connected form the notices of the 
various parts of the collection which have been examined and deter- 
mined by the staff of the Zoological Department. 
My thanks are due to Mr. McLachlan, F.L.S., for the notice of 
the Libellule. 
1 Referred to at meetings of the Zoological Society last year; see P. Z.S. 
1876, pp. 178, 422, 520. 
