Miscellaneous. 455 
discovery, which is in itself an interesting fact, and will, no doubt, 
lead to an acquaintance with many new forms of these elegant little 
Molluscoids, as it has already added a new area beyond the hitherto 
known limit of their geographical distribution. 
I remain, Gentlemen, 
Your obedient Servant, 
Geological Survey Office, Melbourne, C. D’Oyxy H. Aptin. 
Sept. 24, 1860, 
HELIX MOUHOTI. 
To the Editors of the Annals of Natural History. 
GENTLEMEN,—At p. 203 of the present volume of your Journal you 
did me the favour to insert the descriptions of two new land-shells 
from Cambojia. For one of them (Helix Mouhoti) I beg permission 
to alter the name to Helix Cambojiensis, the name Mouhoti having 
been assigned already by Dr. Pfeiffer to another species of Heliz. 
Iam, Gentlemen, Yours, &c., ; 
Noy. 5, 1860. Lovett REEVE. 
CORBULA ROSEA. 
To the Editors of the Annals of Natural History. 
GENTLEMEN,—By inserting the enclosed in your ‘ Annals,’ you 
will much oblige Your obedient Servant, 
Ben. Wh. Apams. 
1860. July 30th and August 2nd. When dredging in Dalkey 
Sound, I diseovered, off the south-west of the island, on a gravelly 
bottom, forty-one live specimens of Corbula rosea. I have carefully 
compared them with Forbes and Hanley’s description, and also 
shown them to Dr. Farran of Feltrim, so that no doubt exists as to 
their identity ; and all doubt as to their being a British species is 
now removed. 
The Rectory, Cloghrar, 
Noy. 1, 1860. 
On the Morphology of the Compound Eyes in the Arthropoda. 
By E. Cuaparépe. 
In order to complete the important investigations already made 
upon the histology of the compound eyes of insects, the author has 
undertaken the study of the evolution of these organs. In those 
insects with a complete metamorphosis which possess compound 
eyes, it is well known that the larve are either blind or furnished 
only with simple eyes. It is therefore in the pupe that the genesis 
of the compound eyes must be studied. . 
The author soon found that the investigation of the eyes during 
their formation threw an unexpected light upon their histological 
composition. In fact, at first a multitude of elements are distinct 
