444 MR. O. THOMAS ON SMALL [NoV. 20, 



3. SoREX (NoTiosoREx) CRAWFORDi, Baifd ; Coues, Bull. U. S. 

 Geol. Surv. iii. p. 651 (1877). 



a-e. In al., c? 2 ■ 

 f. Skin and skull. 



Head and 



body. Tail. Hind foot. Ear. 



a. S 59 28 9-9 4-0 



i. 5 60 26-5 10-0 4-4 



c. Iram 50 30 100 4-0 



" Lives rather an exposed life and is generally found in heaps of 

 rubbish and old piles of firewood." — W. T. 



4. Blarina (Soriciscus) berlandieri, Baird, Mamm. N. A. 

 p. 53 (1859). 



a-c. In al. 



Head and 

 body. Tail. Hind foot. 



a. S 59 20 10-0 



b. S 54 16 10-0 



c. $ 59 20 10-1 



Chiroptera. 



0. Vesperugo georgianus, F. Cuv. 



a. (S . Forearm 33 millim. 



" Rare ; only occasionally found, and then in pairs." — W. T. 



6. Atalapha noveboracensis, Erxl. 



a. c? • Forearm 38 millim. 



" Fairly common. Lives mostly in and about trees." — W. T. 



7. Nyctinomus brasiliensiSj Geoffr. 



a. cJ • Forearm 43 millim. 

 " Infests the houses." — W. T. 



RODENTIA. 



8. Spermophilus spilosoma, Benn. 



a. $. 



Head and body 155 millim., tail 69, hind foot 30, forearm and 

 hand 42, head 42-5, ear 3. Maminse 10. 



9. Neotoma floridana, Ord. 



a. Yg. al., d . 



" Is the largest of the Cricetinse here. They are called 'house 

 builders' by the Mexicans. Their houses are large holes in the 

 ground covered over with a heap of dry sticks, cactus-leaves, pieces 

 of bark, &c. Their underground rooms are extensive, and have 

 rude grass nests in the corners of them. The species varies a good 



