Mr. J. Miers on the Menispermacee. 363 
east of Chittagong, is found only Hylobates Hoolock. And fur- 
ther northward, in the forests and hills of Cachar, Munnipoor, 
and Assam, exists either a third species (not yet, I believe, distin- 
guished by naturalists) or, if the same species as H. Hoolock, so 
strongly modified as to be larger and stouter, with a totally 
different call, and subject to vary in colour the same as H. Lar, 
which H. Hoolock in Arakan is not. 
I subjoin the dimensions of an adult male specimen of Hylo- 
bates Lar shot near Hlyng bway, Tenasserim province, January 
1855. But I believe it attains a larger size. 
Length from crown to posteriors 1! 73". 
Humerus 93", radius 93", hand 6"; total 2! 1”. 
Femur 73", tibia 73", foot 43”; total 1! 72". 
Height when standing upright about 2’ 6”. 
I should not omit mentioning the peculiar manner in which 
this species drinks, which is by scooping up the water in its 
long narrow hand, and thus conveying a miserably small quantity 
at a time to itsmouth. It is to be hoped the animal is not much 
troubled with thirst. 
XLI.—On the Menispermacee. 
By Joun Mrers, F.R.S., F.L.S. &c. 
[Continued from p. 261.] 
18. Hypsprpa. 
Tuis genus consists of a distinct group of plants, natives of 
Asia and the islands of the Oriental archipelago, the type of 
which is the Cocculus cuspidatus of Wallich. It is distinguished 
from Cocculus by its cyclical slender embryo imbedded in simple 
albumen, in which respect it approaches Pericampylus ; but it 
differs from that genus and all others of the Leptogonee, except 
Limacia, in its cotyledons being accumbent (not incumbent). 
It is also notable for its unsymmetrical flowers; for few of 
its species agree in the number of sepals, petals, stamens, or 
ovaries—a very unusual occurrence in the order. The authors 
of the ‘ Flora Indica’ and of the new ‘Genera Plantarum’ have 
refused to admit the validity of the genus, as they do not con- 
sider the imbrication of its inner sepals to be a character of any 
importance ; and therefore they unite it with the genus Limacia 
of Loureiro. In this hasty determination they have entirely 
overlooked other circumstances which establish marked distine- 
tions between the two genera. In all the species of Zimacia the 
sepals are constantly thick and valvate in estivation, while in 
every case in Hypserpa the sepals have broad, thin, membrana- 
