26 
ZOOLOGICAL LITERATURE, 
Of .Crossopus fodiens^ thirteen examples from Russia^ Siberia, 
and Belgium were examined. It has only four small lateral 
teeth on eaeh side. The teeth are white, with hrownish-red 
tips, as in Sorex, hut less dark. The upper front incisor is 
arclicd and provided with a short and rounded tubercle ; the 
lower incisor has one or two prominences, which are but little 
developed. The upper front incisor is, besides, provided with a 
hook-like process on its inner edge ; this process may be seen 
also in Sorex (as observed by Jenyns), but it is very slightly 
developed in that genus, whilst it is very distinct in Crossopus. 
The observation made by Geolfroy St. Hilaire, Gemminger and 
Fahrer, mentioned above, is not confirmed by Dr. Brandt ; he 
found, in five young examples, the intermaxillary suture between 
the second and third small lateral tooth, and he convinced 
himself that what the latter gentlemen regarded as a suture, 
was nothing but the sulcus of a blood-vessel. Consequently 
the dental formula for Crossopus is + | + = 30. 
The upper flesh-tooth is four-rooted. 
Crocidura (sensu latiori, comprising Crocidura, PachyurUj 
Diplomesodon) is distinguished by its entirely white teeth ; the 
number of small lateral teeth varies between four and two ; the 
lower incisor is either entirely smooth or provided with a single 
very small tubercle. The tubercle of the upper incisor is but 
little developed, and obtuse; this tooth has no process on its 
inner edge. Thus Crocidura differs much in its dentition from 
Sorex, but Crossopus forms an intermediate form. In the 
author's opinion, those three subgenera only ought to be 
retained. 
Of Crocidura (sensu strictiori) five examples of C. leucodon 
(Russia), six of C. aranea (Russia), and four of C. suaveolens 
(Crimea) were examined. One specimen of each of these species 
showed distinctly the intermaxillary suture between the second 
and third small lateral tooth ; so that the formula for this group 
would be + I + = 28 (eight true molars above, 
two premolars and six molars below). This formula was subse- 
quently confirmed by an examination of C. sacralis (Ptrs.) in the 
Berlin Museum. 
Of Pachyura one example of P. eirusca (Italy) and three of 
P. indica (Bengal) were examined. They have four small lateral 
teeth, and traces of the suture could be observed between the 
second and' third teeth. Subsequently, on examining the skulls 
in the Paris Museum, the suture was seen quite distinctly at the 
same place in a young Pachyura myosurus (no. 676) ; so that the 
dental formula would be (as in Crossopus) + | + = 30. 
As regards Diplomesodon, which has two small lateral teeth 
* Sorex remifer is merely a variety of Cr. fodiens. 
