NO. I AMPHIBIANS AND REPTILES OF PANAMA SCHMIDT I3 



Rostral just visible from above, about twice as wide as high ; a 

 single large prefrontal, roughly 7-sided, separated from the rostral 

 by the small internasals ; frontal subtriangular, shorter than the pre- 

 frontal ; parietals not distinguished from the adjacent scales ; nostril 

 in a single small scale ; two elongate loreals ; a single preocular ; three 

 postoculars ; upper labials 8 to 9. the fourth and fifth and sixth on 

 the respective sides entering the eye ; lower labials 10, the first pair 

 very large and in contact; one pair of chin shields slightly enlarged; 

 dorsal scales in 21 rows, dropping to 15 anterior to the anus ; centrals 

 236 ; tail incomplete. 



Coloration {in alcohol). — Ground color pale, punctate with brown 

 dots and maculation ; a large brown spot on the head, behind which 

 are about 53 pairs of triangular spots with their apices at the vertebral 

 line, frequently confluent into hour-glass shaped spots, more often 

 offset, i. e. alternate ; an incomplete lateral row of small brown spots ; 

 44 lateroventral brown spots, mostly extending across the belly ; a 

 brown line from the angle of the mouth to the eye. 



Dimensions. — Total length about 500 mm. 



Remarks. — The nasal and loreal arrangement in this snake are 

 radically dififerent from that in Ungaliophis continentalis, which has 

 only a single loreal, and a divided nasal. The anterior loreal of the 

 present specimen apparently corresponds with the posterior nasal of 

 continentalis. The constancy of this arrangement of the nasals re- 

 quires verification from additional specimens. In addition to the 

 characters mentioned in the diagnosis, panamensis differs from the 

 Guatemalan species in the separation of the prefrontal and rostral by 

 the internasals. The inclusion of Panama in the range of continentalis 

 by Amaral " appears to be based on the present specimen which was 

 entered as continentalis in the United States National Museum 

 catalogue. 



CONSTRICTOR CONSTRICTOR IMPERATOR (Daudin) 



Three specimens, from the following localities : 



U.S.N.M. 



No. Locality Date Collector 



50094 Cana May 25, 1912 E. A. Goldman 



54060 Gatun June 23, 191 1 " " 



54145 Tabernilla Apr. 29,1911 " " 



' Lista reinissiva dos ophidios da regiao neotropica. Mem. Inst. Butantan, 

 vol. 4, p. 145, 1929. 



