BLARINA. 557 
d.’ Above cinnamon hair brown, beneath PAGE 
oo Ne tt) Sites SPAR Sent grisea a ana nee aera B. tropicalis 559 
e.’ Above dark plumbeous, beneath paler 
PIC LOW sy oo bir sist bse bas ieee ss B. obscura 559 
b. Tail nearly half as long as the head and body. 
a.’ Above dark brown, beneath smoky gray...B. oreophila 559 
b.’ Above sooty black, beneath brownish....... B. soricina 560 
B. Size medium, total length 111 mm., or less; 
hind foot 13 mm. or over. 
a. Total length less than 107 mm., but over 100 
mm. 
a’ Hind foot 13 mm. 
a.’ Braincase highly elevated above ros- 
(contin 3 AE eae Art CRT a ae EP ee B. mexicana 560 
b.”” Braincase slightly elevated above ros- 
SMR ED Pe hen ie at nis base eerw Wb. edn: written aad B.m. goldmanit 560 
b.’ Hind foot 15 mm. 
a.” Unicuspids without inner cusplets...B.m. peregrina 560 
b.” Unicuspids with inner cusplets. 
a./’’ Above sooty black, paler beneath. .B.m. machetes 561 
b.’’”” Above grizzled plumbeous, beneath 
washed with ashy brown.......... B. mayensis 561 
b. Total length 107 mm., or over. 
a.’ Hind foot over 13 mm., but less than 
RRM NA ieee es) Ven nea abs cease w aad igs B.nelsont 561 
b.’ Hind foot 15 mm. 
a.’ Large upper premolar with antero- 
Ram MIAPMIPRRINGE UNS S507 gcc whe Xceed @hsa- aga Xp Hs B.alticola 561 
b.” Large upper premolar without antero- 
RUMEN elias 4G cw vcs x New wie xcs 9! pe faiads B. fossor 562 
C. Size very large, total length over 130 mm........ B.magna_ 562 
A. Oryptotis. 
Teeth 30; unicuspids 4, never in two pairs, fourth smallest; basal 
lobe of middle incisor a rounded cusp; braincase highest anterior to 
lambdoidal suture; occipital plane arched. 
524. pergracilis (Blarina), Elliot, Publ. Field Columb. Mus., 111, 
1903, p. 149. 
OcoTLAN SLENDER SHREW. 
Type locality. Ocotlan, State of Jalisco, Mexico. 
Genl. Char. Smallest of the genus. Skull: very slender, similar 
to that of B. b. berlandieri, but with the rostrum much narrower; 
molars smaller. Color very different. 
