Dr. W. Baird on a new Species of Estheria from India. 135 
Description or a New Species or EstTHERIA FROM NAGPOOR, 
Centra Inpia. By W. Barrp, M.D., F.L.S. 
Since my paper containing a description of a species of Estheria 
(BZ. Hislopi) in the Proceedings of 1859, p. 231, was printed, I 
have received a short communication from Mr. Hislop, enclosing 
a second species of the same genus from the same locality. This 
species is considerably larger than E. Hislopi, and differs from it 
entirely in shape and markings. The carapace is oval, flat, and 
compressed, rounded in front, where it is most convex, and consi- 
derably attenuated posteriorly. The umbo is situated near the an- 
terior extremity ; the ventral margin of the shell is rounded, and 
the dorsal margin, from the umbo to the posterior extremity, slopes 
downwards and is nearly straight. The carapace is encircled with 
prominent ribs, which are few in number (about seven or eight) and 
of considerable size. The intervening spaces are smooth, rather 
broad, generally convex in the centre, and do not present any of 
that elaborate sculpture which the other species from India (de- 
seribed and figured in the Proceedings of the Zoological Society, 1849) 
—Estheria polita, E. similis, and E. Boysii—exhibit so distinctly ; . 
neither do they show the excavated punctations of E. Hislopi. They 
are merely very slightly punctate. The specimens sent being pre- 
served dry, the animal has not been observed. 
“The specimens now sent,” says Mr. Hislop in his letter to me, 
‘* were obtained in shallow pools at Nagpiir, Central India, about the 
middle of July, 7. e. a month after the commencement of the rainy 
season there. If the pools dry up, as they frequently do, about the 
end of July, when there is a break in the Monsoon, the creatures 
perish, not to reappear that season, however copious may be the 
showers ; but they are found in abundance at the beginning of the 
Monsoon in the following year. The orbicular species (EZ. Hislopi) 
is not obtained along with the one above referred to, but occurs 
about the end of August in a stream which communicates with the 
tank on the west of the city of Nagpiir.” 
The name I propose for this new species, the specimens of which 
unfortunately are not in a very good condition, is Estheria compressa. 
EsTHERIA COMPRESSA. 
Carapax compressus, ovalis, convexus et rotundatus ad extremi- 
tatem anteriorem, ad extremitatem posteriorem attenuatus. 
Margo ventralis rotundatus, margo dorsalis obliquus, fere 
rectus. Testa costata, superficie viz punctata. 
Length about 5 lines, breadth 23. 
Hab. Pools of fresh water at Nagpoor, Central India. Mus. Brit. 
March 27, 1860.—Prof. Busk, F.R.S., F.Z.S. &c., in the Chair. 
MEMORANDA ON THE HipropoTaAMUS AND BALZNICEPS RE- 
CENTLY IMPORTED TO ENGLAND, AND NOW IN THE 
GARDENS oF THE ZooLoGicaAt Society. By JoHNn Per- 
THERICK, F.R.G.S., H. M. Consut ror THe Soupan. 
Since 1853 I have devoted from six to seven months of each year 
