4 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 63 



General characters. — A small form with low, flat skull closely 

 allied to L. columbiana, but differing in dental and, slight cranial 

 characters, especially the lesser transverse extent of the large upper 

 molariform teeth. Differing from L. latidens in much smaller size 

 as well as cranial details. 



Color. — Entire upper parts warm sepia or mars brown (Ridgway, 

 1912) ; under parts grayish brown, palest on throat, pectoral and 

 inguinal regions ; lips and inner sides of forelegs soiled whitish. 



Skull. — Similar in size to that of L. colombiana; rostrum and 

 interorbital space narrower; lachrymal eminence more prominent, 

 projecting as a distant process on anterior border of orbit; jugal 

 less extended vertically but bearing a postorbital process as in colom- 

 biana; palate reaching farther posteriorly beyond molars; upper 

 carnassial narrower, with inner lobe less produced posteriorly, leav- 

 ing a gap which is absent in colombiana; upper molar narrower, the 

 postero-external cusp set inward, giving the crown a less evenly rec- 

 tangular outline. Contrasted with that of L. latidens the skull is 

 very much smaller, with flatter frontal region. 



Measurements. — Type: Total length, 1085 mm.; tail vertebrae, 

 500; hind foot, 119. An adult female from Gatun, Canal Zone: 

 1095; 463; III. Skull (type) : Condylobasal length, 109. i ; zygo- 

 matic breadth, 72; interorbital breadth, 23.1; postorbital breadth, 

 16.8; mastoid breadth, 69.9; palatal length, 49.8; maxillary tooth 

 row, 36.1 ; alveolar length of upper carnassial, 12.4 ; alveolar breadth 

 of upper carnassial, 10. 



Remarks. — The otter of Panama, like other Middle American 

 forms of Lutra, has the nose pad haired to near the upper border of 

 the nostrils; the soles of the feet are entirely naked; the tufts of 

 hair under the toes and the granular tubercles present on the soles 

 of the hind feet in L. canadensis are absent. The frontal region is 

 flatter in skulls of L. repanda than in the skull of the type of L. 

 colombiana, but the more swollen condition of the latter may be due 

 to the presence of the parasites that frequent the frontal sinuses 

 in Mustelidae. 



Specimens examined. — Two, from localities as follows: 

 Panama: Cana (type), i. 

 Canal Zone: Gatun, i. 



FELIS PIRRENSIS, new species 

 Type from Cana (altitude 2,000 feet), eastern Panama, No. 

 1 79 1 62, skin and skull, female adult, U. S: National Museum (Bio- 

 logical Survey Collection) ; collected by E. A. Goldman, March 22, 

 19 1 2. Original number 21559. 



