1893.] 347 [Cope. 



SiBON SEPIENTRIONALE Kenn., SUbsp. RUBRICATUM. 



No. 346, from Boca Mala, represents a form of this species to wliich sub- 

 specific rank may be at least accorded. If additional specimens confirm the 

 characters it may even rank as a species. A decision cannot now be 

 reached, as only a single specimen has been sent by Mr. Cherrie. 



In this form the body is robust, and the head is not separated by a nar- 

 row neck, although the temporal region is somewhat swollen. The muz- 

 zle is short, and there are eight superior labials, of which the fourth and 

 fifth enter the orbit. Oculars, 2-2, the lower preocular, labial. Twenty- 

 three rows of scales. Five undivided scuta posterior to the vent. The 

 color of the dorsal regions is bright red ; of the inferior regions, light 

 salmon color dusted with brown. There are sixty-one transversely oval 

 black spots on the back, which cover twelve rows of scales transversely, 

 and two and a half to three and- a half rows longitudinally. Small black 

 spots alternate with them on the third row of scales ; and a less definite 

 row of smaller spots alternate with these on the second and third rows. 

 A black band extends from the eye to the last labial plate, and behind and 

 above it a parallel black band extends from the parietal plate. The ex- 

 tremities of these bands are fused with the first dorsal spot, the interspaces 

 being red. Superior labials red, with a black spot in the centre of each 

 plate. Inferior labials black spoiled. Top of head dark brown, bordered 

 posteriorly on outline of parietal plates by a red crescent. This is bordered 

 posteriorly by a black crescent, and is traversed by a median black 

 stripe which connects the dark brown of the vertex with the anterior four 

 black dorsal spots Tail blackish red, spotted above. Total length, 660 

 mm. ; of tail, 133 mm. 



I have seen the Mexican Sibon septentrionale living, and the ground 

 color is light brown, and not red. The color pattern of the form rubrica- 

 um is peculiar about the head, but in other respects it resembles individ- 

 uals of the S. septentrionale which have numerous dorsal spots. 



OXYBELIS ACUMINATA Wied. 



Terraba, No. 289 ; No. 385 without locality. 



Elaps nigrocinctus Girard. 

 Buenos Ayres, No. 341 ; Boruca, No. 329. 



Summary. 



No. OP New 



Species. Species. 



Urodela 3 1 



Salientia 10 3 



Lacertilia 12 8 



Ophidia 9 2 



Totals 33 9 



