81. EHADIN.«iA. 177 



lower labials in contact with the anterior chin-shields, which are 

 shorter than the posterior. Scales in 17 rows. Ventrals 117-137 ; 

 anal divided ; subcaudals 90-120. Length of the tail more than 

 one third of the total. Pale brown above, with a yellowish black- 

 edged streak along each side of the back, an oblique yellow black- 

 edged streak on the outer border of the parietal, and a yellow black- 

 edged spot ou each side of the nape ; upper lip yellow, black-edged ; 

 sides darker than back ; yeUow below, with or without a black spot 

 or dot at the outer end of each ventral. 



Total length 410 millim. ; tail 180. 



Central America. 



a, b. S (V. 128, 128; C. 120, ?). Mexico. M. SallS [C.]. (Types.) 

 c-e. cJ (V.122;C.?), 2 (V.129; Atoyac. Mr. H. H. Smith [C] ; 

 C. 102), & hgr. (V. 122 ; C. ?j. F. D. Godman, Esq.[P.]. 



22. Bhadiusea vermiculaticeps. 



Tfeniophis vermiculaticeps, Cope, Proc. Ac. Philad. 1860, p. 249. 

 Rhadinsea vermiculaticeps, Cope, Proc. Ac. Philad. 1863, p. 101. 

 Coronella vermiculaticeps, Giintk. Biol. C.-Am., Kept. p. Ill (1893). 



Snout short, eye large ; frontal elongate ; loreal as deep as long ; 

 one prae- and two postoculars ; eight upper labials, fourth and fifth 

 entering the eye ; posterior chin-shields longer than the anterior. 

 Scales in 17 rows. Ventrals 117 ; anal divided ; subcaudals 79. 

 Yellowish brown above, with two deep brown dorsal streaks, sepa- 

 rated by the width of one scale, diverging on the neck and extend- 

 ing to the outer posterior angle of the supraocular shield ; another 

 dark streak on each side of head and body, passing through the 

 eye; head brown above, vermiculated with yellowish; labials 

 whitish, narrowly edged with brown; chin and belly yellowish 

 white, each ventral with a deep brown dot at each end near the 

 posterior border. 



Total length 330 millim. ; tail 115. 



Veragua, Costa Rica. 



23. Rhadinsea clavata. 



Dromicus clavatus, PeUrs, Mon. Berl. Ac. 1864, p. 388 ; Bocourt, 

 Miss. Sc. Mex., Rept. p. 711, pi. xlv. fig. 2 (1890). 



Rostral visible from above ; frontal once and a half as long as 

 broad, a little shorter than the parietals ; loreal a little longer than 

 deep ;' one pr^- and two postoculars ; temporals 14-2 ; eight upper 

 labials, fourth and fifth entering the eye ; four lower labials in 

 contact with the anterior chin-shields. Scales in 19 rows. Ventrals 

 127 • anal divided ; subcaudals 89. Pale brown above, with three 

 dark longitudinal lines ; head brown above, with a dark longitudinal 

 streak on the frontal, and a yellow line on each side beginning 

 above the nostril and terminating club-shaped behind the eye ; a 

 short yellowish-brown longitudinal band on each side of the nape ; 

 labials yellowish white, edged above by a black line ; beneath yeUow. 



Total, length 240 millim. ; tail 87. 



Mexico. 



VOL. II. 



