14 PROCEEDINGS OF THE ACADEMY OF [Jan., 



Glauconia humilis B. and G. 



Rena 7iumiUs B. and G., I. c, 143, aud Cope. I. c, 590; Glauconia 

 kumilis, Boul., I. c, I, .7i>, and Cope, Rep. Nat. Mus., 719; Rena 

 humilis Stej., I. c, 501 ; Siagonodon humilis Van Den., I. c, 150. 



Like G. chdcis, but no supraoculars ; the oculars being separated 



by one shield instead of three. 



Hab. — Arizona, southern and Lower California; Mexico. 



BOID^. 



LICHANURA Cope. 



Proc. Acad. Phila., 1861, 304 ; I. c, 590 ; Rep. Nat. Mus., 722 ; Boul., 

 /. c, I, 129. 



Hoad covered with scales; two nasals; no labial pits; eye with 

 vertical pupil; body short and stout; tail short, blunt and slightly 

 pi'ehensile; subcaudals undivided. 



Hab. — Southwestern North America. 



Lichanura roseofusca Cope. 



Proc. Acal. Phila., 1868, 2 ; L. roaeofasca and orcutti Cops, I. c, 591, 

 592, and Rep. Nat. Mus., 724, 7^6 ; L. orcutti Stej. , Proc. U. S. Nat. 

 Mus., 1889, 96 ; L. trieirgata (part) Boul., I. c, I, 129. 



Head slightly distinct; rostral prominent; eye surrounded with 

 a ring of nine or ten scales; anterior nasals in contact; 4-6 small 

 plates behind the nasals, rest of head covered with small scales; 

 body cylindrical; scales small and smooth, in 33-43 rows; ven- 

 trals 224-241; subcaudals 39-47. Total length about 980 mm. 

 (tail 110). 



Grayish or brownish above, sometimes with three rather indis- 

 tinct brown stripes on the body; belly yellowish or reddish, irregu- 

 larly mottled with brown. 



Mr. Stejueger has clearly shown the great variability of scutel- 

 lation in these snakes,* and the very wealth of observation which 

 he brings forward destroys the value of the chief character upon 

 which L. orcutti rests; the presence of an additional loreal. In 

 addition to which is the fact that in the Boiche these plates are so 

 inconstant as to be without classificatory meaning. 



Hab, — Southern California and Arizona. A closely ^^related 

 species, L. trivirgata, is found in Lower California. 



s Proc. IT. S. Nat. Mus., 1891, p. 511. 



