28 BULLETIN 151, UNITED STATES NATIONAL MUSEUM 



respect with the revised description given by Boulenger in 1909. It 

 is interesting to note, however, that it agrees with the type on the 

 right side of its head in that the nasal rests on the first labial only, 

 and with Boulenger 's specimens on the left side where the nasal rests 

 on the first and second labials. 



Genus DUBERRIA Fitzinger 



DUBERRIA LUTRIX (Linnaeus) '» 



Coluber lutrix Linnaeus, 1766, Syst. Nat., vol. 1, p. 375. 



Homalosoma lutrix Boulenger, 1894, Cat. Snakes Brit. Mus., vol. 2, p. 274. 



1 (U.S.N.M. 40695) Mem, K. C. (Sm. Afr. Exped.) 1909. 



1 (U.S.N.M. 42015) ? Aberdare Mtns., K. C. (Sm. Afr. Exped.) 1909. 



Mid-body scale rows, 15; ventrals, 110 to 140; subcaiidals, 22 to 31; 

 labials 6, the third and fourth entering the orbit; loreal present. 



Subfamily Dasypeltinae 

 Genus DASYPELTIS Wagler 



DASYPELTIS SCABER (Linnaeus) 



Coluber scaber Linnaeus, 1758, Syst. Nat., ed. 10, vol. 1, p. 223. 



Dasypeltis palmarum ?, Dasypellis abyssinia ? Stejneger, 1893, Proc. U. S. Nat. 



Mus., vol. 16, p. 733. 

 Dasypeltis scabra Boulenger, 1894, Cat. Snakes Brit. Mus., vol. 2, p. 354. 



2 (U.S.N.M. 16755-6) Mt. Kilimanjaro, T. T. (Abbott) 1888-89. 

 1 (U.S.N.M. 40990) Mt. Kenya, K. C. (Sm. Afr. Exped.) 1909. 



1 (U.S.N.M. 41974) Guaso Nyiro, K. C. (Sm. Afr. Exped.) 1909. 

 1 (U.S.N.M. 42016) Aberdare Mtns., K. C. (Sm. Afr. Exped.) 1909. 



4 (U.S.N.M. 41975, 49019-20, 49053) K. C. (Sm. Afr. Exped.) 1909.. 

 1 (U.S.N.M. 49078) Kaimosi, K. C. (Heller) 1912. 



1 (U.S.N.M. 49376) ? Kakumega, K. C. (Heller) 1912. 



5 (U.S.N.M. 62901-5) Morogoro, T. T. (Loveridge) 1916-17. 

 1 (U.S.N.M. 62906) Lumbo, Mozambique. (Loveridge) 1918. 

 1 (U.S.N.M. 62907) Mbunyi, K. C. (Loveridge) 1916. 



1 (U.S.N.M. 63078) Kenya Colony. (Sm. Afr. Exped.) 1909. 

 1 (U.S.N.M. 63481) Budonga Forest, U. (Raven) 1920. 



An interesting feature of the distribution of this species is its 

 occurrence at 10,000 feet on Mount Kenya as given on the label. 



Mid-body scale rows, 21 to 26; ventrals, 205 to 247; anal entire; 

 subcaudals, 45 to 8G; labials, 7 (6 in one snake and on the left side 

 only of two others), third and fourth (second and third on one side 



lo Regarding the question of synonymy, Dr. L. Stejneger has given me the following note: 

 "1820 Dubcrria Fitzinger Class. Rept. p. 31 {Coluber canus). Fitzinger in 1820 created Duberria for C. 

 eanua 'und Consorton'; among these consorts he quotes Duberria arctirostris = Coluber duberria Morrem = 

 Coluber lutrix Linn., which consequently becomes the type by tautonomy of the genus Duberria. Conse- 

 quently Homalosoma must Kive way to Duberria. Wagler's Homalosoma is only a substitute name for 

 Duberria and a synonym of Fitzinger's genus as shown by Wagler's footnote 4 on p. 190 (Syst. Amph.')." 

 Pseudaspis was created by Fitzinger 1843, p. 25, type Coluber oinus and was adopted by Boulenger from 

 Cope's use of it in 180 1 and is the proper name for it. 



