156 OPHIDIA. 
SCOLECOPHIS. 
Scolecophis, Fitz. Syst. Rept. 1843, p. 25 ; Cope, Proc. Ac. N. Se. Phil. 1862, p. 74. 
Distinguished from Homalocranium by the presence of a loreal shield. 
1. Scolecophis atrocinctus. 
Calamaria atrocincta, Schleg. Ess. ii. p. 47. 
Homalocranion atrocinctum, Dum. & Bibr. Erpét. vii. p. 864; Saly. P. Z.S. 1860, p. 454, and 
1861, p. 227. 
Homalocranion (Platycranion) atrocinctum, Janu, El. sist. Ofidi, p. 40; Tconogr. Ophid. xv. t. 2. 
fig. 7. 
Tantilla atrocincta, Cope, Journ. Ac. N. Se. Phil. viil. p. 145 (1876). 
Scolecophis atrocinctus, Bocourt, Miss. Sc. Mex., Rept. p. 577, t. 37. figg. 2, 2 a-e. 
Elaps zonatus, Hallow. Journ. Ac. N. Se. Phil. 1855, p. 35. 
Hab. Mexico, Toluca (Cope); Guatemata, Duefias (Salvin), Vera Paz (Bocourt) ; 
Honpuras (Hallowell). 
PROCINURA. 
Procinura, Cope, Proc. Am, Phil. Soc. xviii. p. 262 (1880). 
“Dentition opisthoglyph. Form that of Elapomorphus. ‘Two nasal, one loreal, and 
one preocular plates ; anterior and posterior frontals distinct. Scales smooth, excepting 
those of the posterior dorsal and caudal regions, where they are keeled, those of the 
latter so much so as to be tubercular. Anal plate double. 
“This genus is near to Scolecophis, Cope, but the peculiar tubercular carination of 
the tail distinguishes it.” 
1. Procinura zemula. 
Procinura emula, Cope, Proc. Am. Phil. Soe. Xvili. p. 262. 
Hab. Mexico, Southern Chihuahua, Batopilas (Cope). 
Seales in fifteen rows. Ventrals 148; subcaudals 41. Loreal square; one ante- and 
two postoculars ; seven upper labials, the third and fourth entering the orbit; tem- 
porals 1+2. Body surrounded by broad black rings, which have a broad yellow border 
and are separated by red interspaces of twice their width. Each red scale has a central 
black spot. 
The only known species inhabits a rocky, mountainous region. 
Although this curious snake is in its colour an almost perfect repetition of Elaps 
fulvius, it is not known that the two species inhabit the same region. 
~ POGONASPIS. 
Pogonaspis, Cope, Proc. Ac. N. Se. Phil. 1894, p. 204. 
Described as differing from Homalocranium by the presence of a single pair of chin- 
shields, 
