98 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



Type. — California Academy of Sciences No. 49154; col- 

 lected by Joseph R. Slevin, on Isla Partida, near Angel de la 

 Guardia Island, Gulf of California, Mexico, April 22, 1921. 



Verticaria picta, new species. 



Diagnosis. — Similar in size and form to Verticaria hyper- 

 ythra, but with no dorsal longitudinal stripes. Lateral light 

 stripes absent or very faintly indicated except on side of head. 

 Back unicolor, ashy or brownish gray. Lower surfaces bluish 

 white or blue. Adults with a brick-red lateral longitudinal 

 band, absent in young. Young with light blue tails. 



Type. — California Academy of Sciences No. 49155; col- 

 lected by Joseph R. Slevin on Monserrate Island, Gulf of 

 California, Mexico, May 25, 1921. 



Chilomeniscus punctatissimus, new species. 



Diagnosis. — Similar to Chilomeniscus cinctus, but with each 

 scale of the white cross-bands marked with a dark brown central 

 spot. Scale rows 13. Gastrosteges 121. Urosteges 23c. Black 

 bars on body 32 ; on tail 7. 



Type. — California Academy of Sciences No. 49156; young 

 female, collected by Joseph C. Chamberlin, on Isla Partida, 

 Espiritu Santo Island, Gulf of California, Mexico, May 

 31, 1921. 



Coluber barbouri, new species. 



Diagnosis. — Similar to Coluber lateralis but without dark 

 markings on lips, chin and throat; lateral line pure white; 

 labials, chin, throat and anterior gastrosteges white, more or 

 less suffused with coral pink ; rest of lower surfaces yellowish 

 white. Slight enlargements of the white lateral line at intervals 

 of from four to seven scales on the anterior half of the body 

 are slightly suggestive of the color pattern of C. aurignlus. 

 Scale rows 17. Gastrosteges 193. Urosteges 130+ . 



Type. — California Academy of Sciences No. 49157; adult 

 female, collected by Joseph R. Slevin on Isla Partida, Espiritu 

 Santo Island, Gulf of California, Mexico, May 30, 1921. 



