1882.] MR. 0. THOMAS ON RODENTS FROM S.W. AFRICA. 265 
The lower eyelid is transparent in this specimen, whilst in others 
it is very frequently rendered opaque by white veins. 
The specimen must evidently be referred to Cope’s Phyllomedusa 
azurea, in spite of the almost total absence of white areolations on 
the lower eyelid; but I do not believe that species to be distinct from 
P. hypochondrialis. The characters which, according to Mr. Cope, 
distinguish P. hypochondrialis from P. azurea are the presence of 
vomerine teeth, the absence of a white lateral streak, and the trans- 
parence of the lower eyelid. Mr. Cope does not say if his knowledge 
of the former species rests upon the type specimen in the Paris 
Museum. ‘This I had opportunity of examining four years ago. I 
do not recollect whether I paid attention to the vomerine teeth ; but 
I came to the conclusion that P. hypochondrialis and P. azurea are 
not specifically distinct. The transparence or opaqueness of the 
lower eyelid I do not consider a specific character in this or any other 
species of the genus Phyllomedusa ; the presence or absence of a white 
streak from the mouth does not seem to me of much importance. 
As to the vomerine teeth in the typical specimen, doubts may be enter- 
tained of their presence; all the specimens in the British Museum 
lack these teeth. 
3. On a small Collection of Rodents from South-Western 
Africa. By Ouprietp Tuomas, F.Z.S., British Museum. 
[Received February 7, 1882.] 
(Plate XIV.) 
The present collection was obtained by the late Mr. C. J. Andersson 
in Damaraland and the neighbouring countries, and has recently 
been acquired by the British Museum. The skins are unfor- 
tunately in a rather delapidated condition, but the dates and localities 
have in most cases been preserved. Altogether the Museum has 
received twenty-four of Mr. Andersson’s specimens, belonging to ten 
species, of which the following list, owing to our ignorance of the 
Rodent fauna of this region, may be of some service. 
1. Scrurus coneicus, Kuhl, Beitr. z. Zool. p. 66 (1820). 
Three specimens. Cunéné river, N. Damaraland, July 25, 1867. 
2, GeRBILLUS TENUIS, Smith, Ill. Zool. S. Afr., Mamm. pl. XXXvi. 
fig. 2 (1849). 
Three specimens. Otjimbinque, February 7, 1865. 
3. PacHyuromys AuRIcuLaris (Smith), S. Afr. Quart. Journ, ii. 
p- 160 (1834). 
Five specimens. Otjimbinque, February 6 and 7and March 6, 1865. 
This species is, as Mons. Huet has shown’, undoubtedly congeneric 
with the peculiar Pachyuromys duprasi, Lataste’. 
1 Le Nat. vol. i. p. 339 (1881). 2 Le Nat. i. p. $14 (1880). 
