102. HoMATOSOMA. Qe 
nasal single, confluent with the internasal. Body cylindrical, short ; 
scales smooth, with apical pits, in 13 rows; ventrals rounded. Tail 
short ; subeaudals in two rows. 
Lower California, Sonora, Arizona. 
1. Chilomeniscus stramineus. 
Chilomeniscus stramineus, Cope, Proc. Ac. Philad, 1860, p. 339, and 
Proc. U.S. Nat. Mus. xiv. 1892, p. 594. 
cinctus, Cope, Proc. Ac. Philad. 1861, p. 303. 
Carphophis straminea, Garm. N. Am. Rept. p. 99 (1883). 
cincta, Garm. l. e. p. 100. 
Chilomeniscus stramineus fasciatus, Cope, Proc. US. Nat. Mus. xiv. 
1892, p. 595, 
Internasals separated by the rostral or forming a short suture ; 
frontal a little longer than broad, nearly as long as the parietals ; 
supraocular very small; nasal not reaching the single preocular ; 
two postoculars ; temporals 14+1,; seven upper labials, third and 
fourth entering the eye; anterior chin-shields in contact with the 
symphysial, twice as long as the posterior. Scales in 13 rows. 
Ventrals 108-117; anal divided; subcaudals 21-26. Reddish 
brown above, dotted with dark brown, or with black cross bars 
which may form complete annuli. 
Total length 235 millim.; tail 33. 
Lower California and Sonora. 
2. Chilomeniscus ephippicus. 
Chilomeniscus ephippicus, Cope, Proc. Ac. Philad. 1875, p. 85; 
Coues, Wheeler's Rep. Explor. Surv. W. 100th Mer. v. p. 625, 
pl. xvii. fig. 3 (1875). 
Rostral entirely separating the internasals; frontal a little longer 
than broad, nearly as long as the parietals; nasal in contact with 
the preocular; two postoculars; temporals 1+1; seven upper 
labials, third and fourth entering the eye; anterior chin-shields 
separated from the symphysial, posterior very small. Scales in 
13 rows. Ventrals 113; anal divided; subcaudals 28. Reddish 
or yellow above, with black cross bars which do not quite reach 
the ventrals; tail with nearly complete black rings; snout red, 
rest of head black; belly white. 
Total length 140 millim.; tail 20. 
Nevada and Arizona. 
102. HOMALOSOMA. 
Duberria, part., Fitzing. N. Class. Rept. p. 29 (1826). 
Homalosoma, Wagl. Syst. Amph. p. 190 (1830); Dum. §& Bibr. Erp. 
Gén. vii. p. 109 (1854) ; Giinth. Cat. Col. Sn. p. 19 (1858) ; Peters, 
Reise n. Mossamb, iii. p. 107 (1882). 
Calamaria, part., Schleg. Phys. Serp. ii. p. 25 (1837). 
Homalosoma, part., Jan, Arch. Zool. Anat. Phys. ii. 1862, p. 33. 
Maxillary short, with 10 to 12 teeth; maxillary and mandibular 
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