29 
CALOMYSCUS BAILWARDI, g. et sp. nn. 
Teeth as in Peromyscus. Tail long, heavily pencilled. Ears 
very large. Colour rich sandy buff above, white below. 
Dimensions :—Head and body 78 mm.; tail 87; hind foot 
20-5; ear 21:5. Skull: greatest length 26; length of upper 
tooth-row 3°3. 
Hab, Mala-i-Mir, N.E. of Ahwaz, Persia. 
Type. Male. B.M. No. 5.10.4.68. 
PIPISTRELLUS ALADDIN, sp. n. 
A very small species allied to P. nanus and P. mimus. Small 
anterior premolar in the tooth-row. Colour pale. 
Forearm 31 mm. Greatest length of skull 11°3, 
Hab. Derbend, W. of Isfahan, 
Type. B.M- No, 5.10.4.13. 
ELLOBIUS WOOSNAMI, Sp. n. 
Colour as in #. lutescens. Teeth of much simpler pattern, the 
last molar, above and below, nearly as simple as in Z. talpinus. 
Head and body 112 mm.; tail 16; hind foot 23. Greatest 
length of skull 32. 
Hab. Dumbeneh, N. of Isfahan. 
Type. Female. B.M. No. 5.10.4.65, 
A communication from Dr. AuFreD Ducks contained the de- 
scription of a new Mexican Snake. 
Mr. Lronarp Doncaster, F.Z.8., contributed a paper on the 
colour-variation of the Beetle Gonioctena variabilis. The material 
on which the paper was based was collected almost entirely at 
Granada, and the Author found that, although the insect was 
extraordinarily variable, when a large collection was examined 
the beetles could be classified into two chief groups with but few 
intermediate forms. 
Mr. F. E. Bepparp, F.R.S8., contributed two papers describing 
two new species of worms, one a Pontodrilus from the shores of 
the Red Sea, and the other an Enchytreid of the genus Henlea 
from India, which was destructive to the eggs of the Locust. 
A paper was read from Dr. J.G. DE Man, in which he described 
two species of Decapod Crustacea, a Crab and a Prawn, collected 
by Dr. R. Hanitsch, of Singapore, from a small artificial fresh- 
water pool on Christmas Island, The interest of their occurrence 
lies in the fact that previous to the construction of the reservoir, a 
few years ago, there seems to have been no possible habitat for 
these animals on the island, and they must have been introduced 
since that time, perhaps by migration from the sea. The Crab 
was referred to Ptychognathus pusillus, a species described by 
Heller from the Nicobar Islands forty years ago and not since 
