On the Mammalia of Aberdeenshire. 43 
mannite might be more economically procured from this sea-weed 
than from the usual source—manna.* 
On the Mammalia of the Counties of Aberdeen, Banff, and Kin- 
cardine. By WiLLIAM MACGILLIVRAY, A.M., LL.D., Pro- 
fessor of Natural History in Marischal College and Uni- 
versity, Aberdeen. (Communicated by the Author.) 
(Continued from vol. xxxvii., p. 392.) 
2. Sorex rusticus. Sorex tetragonurus has the head broader and more 
convex, and the muzzle proportionally narrower; the feet rather more 
slender ; and the tail proportionally shorter, and more slender. In both, 
the tail is unequally four-sided, the lower side being broader than the 
rest; but in Sorex rusticus I have never seen the hairs so worn as they 
often are in the other. 
The following are the measurements of three individuals :— 
MALE. FEMALE. FEMALE, 
In. 1: In. 1. fn, TC 
Entire length, . 4 5 4 6 4 3 
Length of head, Ay +O i tO 
Length of tail, “ads sate it Sng | sid Lap 
Length of forefoot, . . . 0 3} 0 4: 0 4 
Length of hind foot, . 0 52 0 64 On'7 
Skull in length, 0 9 
Skull in breadth, 0 44 
The habits of this species or variety are, in all respects, so far 
as can be known, the same as those of the other. It is more com- 
mon in fields and by fences than Sorex tetragonurus, which is the 
kind usually found with us in wilder and more bushy places, as well 
as in woods. Our Highland fox, compared with that of the Low- 
lands, presents exactly similar differences. It is not distinguished 
by our rustics from the other, both being Thraw Mice. 
Sorex araneus, Flem. Brit. Anim., 5. 
Sorex araneus, Jen. Brit. Vert. Anim., 17. 
Sorex rusticus, Jen. Ann. Nat. Hist., i. 423. 
8. Sorex ciliatus. Grey-breasted Water Shrew. 
Black above, blackish-grey beneath, throat reddish-brown ; a tuft of 
white hairs on the inner lobe of the ears ; feet ciliated; tail as long as 
the body, not including the head, square, compressed toward the end, 
ciliated beneath, with a ridge of stiffish hairs, which gradually elongate, 
and form a pointed tip ; upper canine tooth elongated, decurved in the 
fourth of a circle, obtuse, with a prominent basal lobe; lower canine 
tooth direct, depressed, slightly ascending at the end, with a faint sub- 
basal lobe ; teeth tipped with brownish-red. 
* MM. Knop and Schnederman have detected mannite in the mush- 
- room named Agaricus piperatus ; other chemists have found the mannite 
in Cantharellus esculentus and Clavellaria coralloides,—EDI1'. 
