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Show 879.] DR. DOBSON ON CHIROPTERA FROM ZANZIBAR. 717 E. gambianus; and it maybe seen that considerable differences exist:- E. labiatus. E. gambianus. Length, head and body 5-0 5*5 head 1-95 2.0 eye from tip of nostril 0*8 0*7 ear 0*8 0*85 forearm 2*85 3*3 thumb 1*2 1*4 third finger, metacarpal .... 1*95 2*25 „ „ 1st ph 1-3 1-5 ,, „ 2nd ph 2*0 2*25 fifth finger, metacarpal 1*9 2*15 ., ,, lstph 0*9 1*2 ,, „ 2ndph 0*95 1*15 tibia 1-15 1*2 foot 0*75 0*7 3. TRLENOPS PERSICUS, var. AFER. Tricenops persicus, Dobson, J. A. S. B. 1871, p. 455, pi. xxviii.; id. Catal. Chiropt. Brit. Mus. (1878), p. 124, pi. viii. fig. 1. Tricenops afer, Peters, Monatsb. Akad. Berl. 1876, p. 913. After a most careful comparison of the specimens in the collection (which must be referred to the same species as that indicated by Prof. Peters under the name of T. afer) with others of T. persicus from Shiraz, I am unable to find any differences of importance. I find that the characters enumerated as distinctive of T. afer, such as the form of the emarginations on the inner side of the ear-conch and the shape of the central lanceolate process of the nose-leaf, are variable to the extent described in the different specimens, while the darker colour of the fur observable in the African form is probably the normal shade in this species, the type specimens from Persia having fur of a paler colour in conformity with that of other species of animals inhabiting the sandy districts about Shiraz1. The following Table shows how very closely the measurements of the Zanzibar specimens agree with those of one of the specimens from Persia, from among which the type of this species was taken :- Shiraz. Zanzibar. Length, head and body 2*3 2*4 „ tail 1*2 1-2 „ ear 0*45 0*4 „ forearm 2*0 2*0 „ third finger, metacarpal 1*6 1-45 „ 1st ph 0*5 0*55 „ 2nd ph 0*7 0*65 „ fourth finger, metacarpal 1'45 1*35 „ „ „ lstph.. 0*4 0*45 in ]C aSteael .n Cohtier oopnt .th Ber icto.l„ oM uurs o.f p2 t.nh 2ed2 f5pu.hr in Vesperugo pipi0s*i3r5e ttus and o0t*h3e5r species, |