418 



PROCEEDINGS OF THE NATIONAL MUSEUM 



♦DRYADOPHIS MELANOLOMUS SLEVINI (Stuart) 



The Museum has six specimens, five from Maria Madre Island 

 (Nos. 24674-8) and one from Maria Magdalena Island (No. 24679), 

 in the Tres Marias Islands. One other specimen has been examined, 

 from Maria Madre Island (L. M. Klauber No. 22686). The ventrals 

 and caudals, respectively, in the order listed, are 188, 110; 185, ? ; 183, 

 ?; 188, ?; 184, 111; 182, ?; 185, ?. Slevin (1926, p. 201) gives counts 

 for six other specimens. 



DRYADOPHIS MELANOLOMUS STUARTI, new subspecies 



Holotype. — U. S. N. M. No. 110924, collected near Acapulco, Guer- 

 rero, on September 3, 1939, by Kozella Smith. 



Paratypes.— Four, including EHT-HMS No. 10094, a topotype; 

 Mus. Zool. Univ. Mich. No. 80202, Paso del Kio, Colima; Carnegie 

 Mus. No. 7253, Cualata, Colima; and U.S.N.M. No. 56283, Colima. 



Table 9. — Variation in Dryadophis melanolomus stuarti 



Museum No. 



Sex 



Ventrals 



Caudals 



EHT-HMS No. 10094 

 Carnegie No. 7253 2 ... 

 U.M.M.Z. No. 80202 3 . 

 U.S.N.M. No. 110899_ 

 U.S.N.M. No. 110900. 

 U.S.N.M. No. 110904. 

 U.S.N.M. No. 110905. 

 U.S.N.M. No. 110907- 

 U.S.N.M. No. 110908- 

 U.S.N.M. No. 110924. 

 U.S.N.M. No. 5G283._ 

 U.S.N.M. No. 110901. 

 U.S.N.M. No. 110902. 

 U.S.N.M. No. 110903. 

 U.S.N.M. No. 110906. 



? 

 ? 



? 

 c? 

 c? 



& 

 d 1 

 O" 



& 

 & 



9 

 ? 

 ? 

 9 

 9 



195 

 179 

 184 

 182 

 182 

 180 

 180 

 179 

 180 

 185 

 185 

 184 

 188 

 188 

 184 



115 

 117 

 115 

 116 



118 

 115 

 113 



118 



113 



113 



1 From Taylor, 1940. p. 458. 

 - From Smith, 1939, p. 317. 

 3 From Oliver, 1937, p. 19. 



Diagnosis. — Like D. m. slevini, except markings on chin, gular 

 region, and anterior part of belly very poorly defined in adults, more 

 distinct in the young; middle of belly not dark-pigmented ; dorsal 

 scales uniform light olive in adults, practically without evidence of 

 remnants of the dark juvenile markings. 



Description of holotype. — A large male; dorsal color uniform light 

 olive (bluish shine where scales are shed) ; supralabial region some- 

 what lighter, but not abruptly differentiated in color from top of 



