A MONOGRAPH OF THE SEA-SNAKES ( HYDRO PEIINJE). 



195 



(c 6 ) Costals in midbody 36 to 43. Two super- 

 posed anterior temporals. Prefrontal 

 touching no labial . . 



(d b ) Costals in midbody 37 to 54. One large 

 anterior temporal. Prefrontal touching 

 2nd labial 



(e b ) Costals in midbody 42 to 53. Two super- 

 posed anterior temporals. Prefrontal 

 touching 2nd labial 



(/ 6 ) Costals in midbody 47. One large anterior 

 temporal. Prefrontal touching no labial 

 (c*) Ventrals 375 to 531. 



(a 6 ) Anterior costals 25 to 36. Two superposed 



anterior temporals. Ventrals 375 to 397 

 (b b ) Anterior costals 25 to 41. One large 

 anterior temporal. 

 (a 8 ) Anterior costals 1 to 9 less than pos- 

 terior. Ventrals 376 to 438 

 (6 s ) Anterior costals 10 to 22 less than pos- 

 terior. Ventrals 376 to 531 

 (c b ) Anterior costals 48 . . 



nigrocincta. 



torquata. 



coerulescens. 



cyanocincta. 



torquata. 



fasciata. 

 neglecta. 



