sniaU M-iminals from S. America. 409 



flimcnsioiis, and the teeth much smaller. An indistinct 

 dorsal stripe present. 



Dimensions of the type (incasiired on tlie spirit-specimen) : — 



Forearm 3G mm. 



Head and body '^?^ -, ear 13; nose-leaf 9-2; third fint^er, 

 metacarpal 37, first plKdanx 13*a ; lower le;>- and foot (c. w.) 

 23-5. 



Skidl : greatest length 20 {22 in zarhinus) ; basal length 

 ]5'8 ; zy!::omatic breadth 123 ; mastoid breadth 10"5; palatal 

 len<::th 9'2 ; front of canine to back of m^ 7 ; comoined 

 length of 111- and nr on outer edge 3"2 (3*7 in zarJiiniis) ; 

 Iront of lower canine to back of m^ 7*8. 



Huh. Poznzo, IVrn. 



T>,pe. A.lult male. B.Af. no. 12. 1. ly. 1. ColKcted by 

 L. Kgg. Presented by Oldfield Tlionuxs. 



Blarina equator is, sp. n. 



Near B. yiipn'dfnsis, but with smaller skull and t'eth. 



Size, as judgtMl by skull, smaller than in J3. tue-idensi'Sf 

 about equalling that of B. ihomasi. Colour and length of 

 fail absolnlely as in vieridensis, B. ihomasi differing by its 

 shorter tail. 



Skidl and teeth essentially as in B. meridtnsisj but 

 smaller throughout. 



Dimensions of the type (measured in flesh) : — 



Head and body 82 mm. ; tail 32 ; hind foot 14 ; ear 5. 



Skull: condylo-basal length 21'6; condylo-incisive length 

 22"5 ; greatest breadth 10"7 ; palate, length 9'5, breadth 

 across molars 5'8 ; front of i' to back of ni^ 9*4 ; combined 

 length of //, «i^, and m^ on outer edge 0'2. 



H(d>. Ecuador. Type from Sinche, Guabanda, 4000 m. 

 Other specimens from iMt. Pichincha, Quito. 



Type. Old male. B.M. no. 99. 9. 9. 3. Original number 

 13(5. Collected 17th December, 1398, by Perry O. Simons. 

 Presented by Oldfield Thomas. 



The three South-American species of Bkirina are exceed- 

 ingly closely allied to ea<;h other. B. meridensis is the 

 largest and has a comparatively long tail ; B. ihomasi is 

 smaller, with a short tail, and with the brain-case more 

 abruptly swollen than in the other two; the present species 

 agrees in shape of skull and length of tail with meridensis^ 

 but is even slightly smaller than ihomasi. 



Marmosa citella, sp. n. 



Like M. marmota, but much smaller. 



General characters, including colour, length of tail, and 

 Ann. <£■ Mao. X. Hist. Ser. 8. Vol. ix. 28 



