57. DRYMOBItJS. 9 



p. 203 (1854) ; Gtintli. Cat. Col. &». p. 113 (1858) ; Jan, Elenco 

 S7st. Ofd. p. 80 (1863). v ^ ' ^ 



Coiyphodon {non Owen), part., Bum. 8j- Bib: t. c. p. 180 • Gilntk 



I. c. p. 107 ; Jan, I. c. p. 63. 

 Leptophis, part., Bum. ^ Bihr. t. c. p. 528. 

 Dromicus, part.. Bum. 8f Bibr. t. c. p. 646 ; Giinth. I. c. p. 126. 

 Drymobius, part., Cope, Proc. Ac. Philad. 1860, p. 560; Bocourt, 



Miss. Sc. Me.r.,Bept.^.7\5(\8Q0). 

 Dendrophidium, Cojoe, I. c. p. 561 ; Bocourt, I. c. p. 730. 

 Ablabes, part., Jati, I. c. p. 51. 

 Thamnosophis, part., Jan, I. c. p. 82. 

 Tropidonotus, part., Jan, I. c. p. 68. 

 Eudryas, Bocourt, I. c. p. 716. 

 Crossanthera, Cope, Am. Nat. 1893, p. 481. 



Maxillary teeth 22 to 38, increasing in size posteriorly, the two 

 or three last stouter if not longer than those preceding them ; 

 mandibular teeth subequal or anterior somewhat enlarged. Head 

 elongate, distinct from neck ; eye large, with round pupil ; ' no sub- 

 oculars._ Body elongate, cylindrical ; scales smooth or keeled, with 

 apical pits, in 15 or 17 rows ; vcntrals rounded or with an obtuse 

 lateral keel. Tail long ; suhcaudals in two rows. 

 America, from Texas to Peru and Southern Brazil. 

 This genus is very closely allied to, and intermediate between, 

 both Zamems and Coluher. It is just separable from the former by 

 the greater number of teeth ; and it is connected with the latter 

 by D. hifossatus and D. boddaerfii, the dentition of some specimens 

 of which approaches the isodont type. The subocular shield below 

 the prseocular, present in most of the species referred to Zamenis, is 

 constantly absent in Drymohhis. 



Fig. 2. 



Maxillary and mandible of Brymohius hijossatus. 



Synopsis of the Sjiecies. 



I. Scales smooth. 



Scales in 15 rows; two labials entering 



„ *^^ ^7%- • 1. lifossatus, p. 10. 



fecales m 17 rows; usually three labials 



entering the eye 2. hoddaertii, p. 11. 



II. Scales keeled. 



A. Scales in 15 rows 3. affinis, p. 14. 



