SYNTHETOSCIURUS. 91 
b.” Superior outline of skull not greatly PAGE 
CITE SOLS Iya op ERG Re Te ee I Guerlinguetus 103 
bee remolars, =~. 
a.’ Braincase highly arched on posterior 
BREMEN UN ONUGENIS cansee so dk wins Wes Aw tes cea cate Microsciurus 98 
b.” Braincase rounded and slightly arched 
one posterior halt of -iromtals i. 2 ...%)S.. F<: Batoscturus 100 
G. Size large; total length over 450 mm. 
a.’ Premolars, —. 
a.’ Front of skull depressed at base of ros- 
ee BU dale yahgeeh cgay, RN OL eae am Ae ae ae ae ee ER Ar@osciurus 106 
b.” Front of skull arched at base of ros- 
TeTSTNIAA ea tars SRR st Oy cans Bee mo bas Mire Cots Parasciurus 110 
b.’ Premolars, —. 
a.’’ Tail short, broad, bushy. 
a.’’’ Braincase depressed, inflated laterally. Otosciurus 111 
b.”” Tail long, narrow, bushy. 
a./’’ Nasals equal to least interorbital 
[yea] GR clive aia Seta Nes Be ote ao Echinosciwurus 113 
b.’’’ Nasals longer than least interorbital 
IRGC ane elonyeese ene ieee wake ach wid Hesperosciurus 130 
The first genus of the Sciuride is remarkable for the slender 
lower incisors which project outwards, and the upper ones are 
grooved in the center. But one species is known. 
33. *Synthetosciurus. 
Syntheosciurus (sic) Bangs, Bull. Mus. Comp. Zodl., 1902, 
WolxexexIx, p. 25, 
Premolars, —. Size small. Skull thin, papery; rostrum straight, 
audital bulle small; incisors slender, the lower pair projecting out- 
ward, the upper with central groove. 
67. brochus (Syntheosciurus!), Bangs, Bull. Mus. Comp. Zo6l., xxx1x, 
1002, piss. 
PROJECTING-TEETH SQUIRREL. 
Type locality. Boquete, Chiriqui, Panama. Altitude 7,000 feet. 
Genl. Char.” Size small; ears low, round, woolly; pelage long, soft, 
woolly; other characters as in genus. 
*avV0ET00-Ext0UP0T= Synthetosciurus. 
* 
