30 
REPORT ON ZOOLOGY, MDCCCXLII : 
explaining the musculus subcutaneus, and the male organs of genera- 
tion. Two beautifully drawn plates are appended. 
SoRiciNA. — Duyernoy has presented us with two excellent 
Treatises on the Shrew-mice, — ^the one entitled, ‘‘ Sur les 
Dents des Musaraignes, considerees dans leur composition et 
leur structure intime, leurs rapports avec les machoires, leur 
developpement et leur succession” (Compt. Eend. xv. p. 270, 
304, 483, 1000) ; the other, “ Notices pour servir a la Mono- 
graphie du genre Musaraigne” (Magas, de Zool. 1842), with 
16 copper-plates. 
Next to Wagler, Duvernoy laid the foundation for separating the 
Shrew-mice into natural groups, which has been farther accomplished 
by him in this new work, in which he has carefully described the species 
known to him ; and, moreover, illustrated the most of them with figures. 
He enumerates the following species : — I. Subg. Sorex {Crocidura, 
Wagl.) a With three small intermediate teeth. 1. S. araneus, tab. 
38 : 2. S. leucodon, tab. 39 : 3. S. cyaneus, Duv., tab. 40, 41 : 4. S. 
herpestes, Duv., tab. 42, 43. I had ventured the opinion, in my mono- 
graph, that this might be a younger state of S. vo.rius ; but from this 
description and the drawing, I see that this cannot be the case, as the 
S. herpestes has long waved hair at the tail, which is totally wanting in 
the S. varius. It is also ditferent from my S. infumatus, by its colour. 
On the other hand, it may be identical with A. Smith’s S. capensoides 
(South Afric. Quart. Journ. 1833, p. 62) : 5. S. crassicaudus. Duver- 
noy conjectures, that Geofiroy’s S. myosuros may belong to this, but it 
is by no means the case with the S. myosuros described by myself and 
Pallas (compare Schreb. Suppl. ii. p. 72 ). — h With four small interme- 
diate teeth : 6. S. giganteus (S. indicus), tab. 45, according to a speci- 
men from Egypt, wants, on the right side, the third, on the left, the 
fourth intermediate tooth : 7. S. Sonneratii ; the animal from Japan, 
represented on tab. 46, I hold for S. myosuros, Pall ; 8. 8. Perrotetii, 
Duv., tab. 47, a new species, only of the size of the 8. etruscus ; ear 
large, fur dark brown above, and on both sides blackish ; beneath with a 
grey tinge : from the Nilgherries, 2300 metres above the sea. — II. Subg. 
Amphisorex (8orex, Wagl.) : 9. A. pygmceus, tab. 48: 10. A. alpinus, 
tab. 49: 11. A. Lesueurii, Duv., tab. 50, of the size of 8. etruscus; fur 
above somewhat dark ash-grey, lighter on both sides, palest beneath ; 
tail above blackish-grey, beneath pale ; lips whitish : from the banks of 
Wabasch, in the State of Indiana. — III. Subg. Hydrosorex {Crossopus, 
Wagl.) : 12. H. carinatus {8. fodiens), tab. 51. — IV. Subg. Brachysorex, 
a new group : points of teeth coloured, upper incisors with only one lobe ; 
the intermediate tooth following does not go over it ; under incisors with 
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