BLARINA. 557 
d.’ Above cinnamon hair brown, beneath PAGE 
TIS Se <a to a a MP ee B. tropicalis 559 
e.’ Above dark plumbeous, beneath paler 
ebanes sa Bo wnel Ya oy ile j2 1k eae er ee B. obscura 559 
b. 
a 
Tail nearly half as long as the head and body. 
a.’ Above dark brown, beneath smoky gray...B.oreoplila 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 roo 
mm. 
a’ Hind foot 13 mm. 
a.’’ Braincase highly elevated above ros- 
es EgAAeRTU Raf as PPS toi ites Bh visas apes te Basse we B. mexicana 560 
b.” Braincase slightly elevated above ros- 
LR DUET ra oy Rae eg ea a 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 
ff Gy SBTRTO US in 2S 208 oe Ee ee B.nelsont 561 
b.’ Hind foot 15 mm. 
a.’ Large upper premolar with antero- 
raion May obed (eee ok siera ene ie eee B.alticola 561 
b.”” Large upper premolar without antero- 
daNGe Gee AMOS aie os Btn te eel alanis) oka e =.cr43 Bxjossor (562 
©, size very large, total length over 130 mm........ B.magna 562 
A. Cryptotis. 
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, 
F903; Pp. 140: 
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. berlandiert, but with the rostrum much narrower; 
molars smaller. Color very different. 
