1915.] 



GEITUS SCALOPUS. 



31 



c? Totad length more than 190 mm.; length of hind foot more than 21.5 mm.; 

 greatest length of skull more than 37 mm.; breadth of skull across mastoids 



more than 19 mm Scaloyus aquaticus machrinus (p. 42). 



6.2 Total length less than 153 mm,; greatest length of skull less than 33 mm.; 

 breadth of skull across mastoids usually less than 17 mm. 

 c.^ Length of hind foot usually less than 17 mm. ; greatest length of skull 31.2 mm. 

 or less; breadth of skull across mastoids less than 16 mm., 



Scalopus aquaticus parvus (p. 41). 

 C.2 Length of hind foot usually more than 17 mm.; greatest length of skull more 

 than 31.2 mm.; breadth of skull across mastoids more than 16 mm. 

 d.^ Color golden sepia; face, chin, and wrists bright zinc orange; geographic 



range Anastasia Island, Fla Scalopus aquaticus anastasx (p. 39). 



d.^ Color not golden sepia; face, chin, and wrists not bright zinc orange. 

 e} Color paler; greatest length of skull usually more than 32 mm,; geo- 

 • graphic range North and South Carolina, northern and western Georgia, 



west to mouth of Mississippi River Scalopus aquaticus howelli (p. 36). 



Color darker; greatest length of skull usually less than 32 mm.; geo- 

 grapliic range southeastern Georgia and eastern Florida, 



Scalopus aquaticus australis (p. 38). 



Geographic range west of Mississippi River. 



6.1 Breadth of skull across mastoids 19.3 mm. or more. 



c.i Breadth of skull across mastoids more than 20 mm. ; palatilar length more than 



16 mm.. Scalopus aquaticus machrinus (p. 42). 



Breadth of skull across mastoids less than 20 mm. ; palatilar length less than 

 16 mm Scalopus aquaticus machrinoides (p. 45). 



6.2 Breadth of skull across mastoids less than 19.3 mm. 



c.i Greatest length of skull more than 33 mm. ; interorbital constriction more than 

 7.3 mm. 



d.^ Color coppery snuff brown Scalopus xreus (p. 52). 



d? Color not coppery snuff brown. 



Color dark; geographic range east of 95th meridian, 



Scalopus aquaticus pulcJier (p. 46). 

 Color pale; geographic range west of 95th meridian. 

 /.I Nose and ankles tinged with ochraceous, 



Scalopus aquaticus intermedius (p. 49). 

 /.2 Nose and ankles not tinged with ochraceous, but usually with ivory 



yellow Scalopus aquaticus caryi (p. 48). 



Greatest length of skull less than 33 mm. ; interorbital constriction less than 

 7.3 mm. 



d.^ Prelachrymal region much inflated; rostrum broad and truncate; geo- 

 graphic range Tamaulipas, Mexico Scalopus injlatus (p. 53). 



d? Prelachrymal region not much inflated; rostrum not broad and truncate; 

 geographic range Texas Scalopus aquaticus texanus (p. 50). 



II. KEY TO ADULT FEMALES. 



a.i Geographic range east of Mississippi River. 



6.1 Total length usually more than 148 mm.; greatest length of skull more than 

 32 mm.; breadth of skull across mastoids usually more than 16.5 mm. 

 c.i Total length less than 173 mm. ; length of hind foot less than 21 mm. ; greatest 

 length of skull less than 35.2 mm.; breadth of skull across mastoids less than 



18.7 mm. Scalopus aquaticus aquaticus (p. 32). 



C.2 Total length more than 173 mm. ; length of hind foot more than 21 mm. ; great- 

 est length of skull more than 35.2 mm.; breadth of skull across mastoids 

 more than 18.7 mm Scalopus aquaticus machrinus (p. 42). 



