310 Mr. M. Burr on new Species of Forficularia. 
13x 4:8; interorbital breadth 9; breadth of brain-case 18; 
palate, length from henselion 18°3; diastema 10:5; palatal 
foramina 6°5X33; combined length of upper molars, ex- 
cluding premolar, 5:7. 
Fab. Van, alt. 5000 feet. 
Type. B.M. no. 97.6.4.18. Collected May 28, 1896. 
This beautifully-marked Jerboa, which I have named in 
honour of its collector and donor, Major Williams, is readily 
distinguished from all previously described species merely 
by its general proportions, as its hind feet, while far shorter 
than those of A. alactaga, considerably surpass those of the 
other species above mentioned. Probably it is really most 
nearly allied to A. euphratica, but its longer hind feet will 
readily distinguish it. In colour it is one of the most 
beautiful of the family, owing to the brightness and intensity 
of the buff stripe which runs down the hind legs. 
In Satunin’s admirable paper on Caucasian mammals * 
there are mentioned under Alactaga acontion, besides the 
normal N.-Caucasian form, examples from Transcaucasia 
which are stated to show “ bedeutende Abweichungen” from 
the typical form. In all probability these examples belong 
to A. Williamst. 
XXXHI.—On new Species of Forticularia. 
By Maucoutm Burr, F.Z.S. 
Tue following new species and varieties are, with one 
exception, described from specimens taken by Herr Friih- 
storfer in the Celebes, Java, and Lombok, and I have great 
pleasure in dedicating one species to this ardent collector. 
The collection also included two other species of Spongophora 
and one new Chetospania, which I have refrained from 
describing, as I possess only females, and those not in good 
condition. 
The collection made by Herr Friihstorfer is of great interest 
as including species from several localities, which I hope to 
work out more fully at a later date. 
I take this opportunity of thanking my learned colleague 
M. de Bormans, to whom I am indebted for his invaluable 
assistance in determining many of the species and fixing the 
novelties. 
* Zool. Jahrb. ix. p. 308 (1896). 
oi Poet 
