MEXICAN SNAKES AND CROCODILLANS — SMITH 403 



The Museum has three other specimens, from San Juan Bautista 

 (No. C581, type of Scolecophis scytalinus Cope, 1866, p. 320), "Mex- 

 ico" (No. 16388), and Tehuantepec (No. 32272, collected by Dr. 

 Spear) . These agree well with the others ; all have the dorsal scales 

 black-tipped. 



♦CLELIA CLELIA IMMACULATA Smith 



The Museum has a single specimen, the type (No. 24966), from 

 Guadalajara, Jalisco. 10 



♦COLUBER CONSTRICTOR STEJNEGERIANUS (Cope) 



The Museum has a single Mexican specimen, the type of Zamenis 

 conirostris Cope (No. 1768), from Matamoros, Tamaulipas. u 



CONIOPHANES BIPUNCTATUS BISERIATUS Smith 



Coniophanes bipunctatus biseriatus Smith, Proc. Biol. Soc. Washington, vol. 

 53, pp. 59-60, 1940. 



Four specimens (Nos. 108595, 109716-8) of the type series, as well 

 as one embryo not included in the series (No. 109719), are from near 

 Palenque, Chiapas. One other (No. 109715) is from Potrero Viejo, 

 Veracruz, collected by Dyfrig McH. Forbes. The latter is a male, 

 with 128 ventrals, the tail broken. 



The type series was separated from bipunctatus (which was then 

 considered as occurring in central Mexico as well as in Central Amer- 

 ica) largely on the basis of what appeared to be an exceptional pat- 

 tern, with the inner edge of the lateral stripe scalloped, or two rows 

 of spots enclosed between the two lateral stripes. Since this dis- 

 tinct pattern was not mentioned by Bailey (1939, pp. 24-26), it was 

 considered a development restricted to specimens of this area. They 

 were also compared with two large specimens from Tierra Colorada, 

 Veracruz, which showed no evidence of the pattern characteristic of 

 the Palenque specimens. 



However, an examination of the Mexican specimens 12 of bipunc- 

 tatus in the National Museum (including No. 30326, Orizaba, and 

 No. 30343, Tehuantepec) shows that the peculiar pattern described is 

 characteristic of the young and is still visible even in the Potrero 

 specimen, which measures 357 mm. in body length. Accordingly, it 

 cannot be held that the Palenque specimens are any different from 

 other Mexican specimens now known. 



10 Smith, 1942g, p. 394. 

 " Cope, 1895, p. 679. 

 12 Bailey, 1939, p. 26. 



