460. i AMPHISBENIDE. 
Pectoral segments enlarged. A gular fold; a vertebral line. No 
preanal pores. Tail rounded, depressed, above with regular trans- 
verse rows of round tubercles separated by granules. 
Florida. 
1. Rhineura floridana. 
Lepidosternon floridanum, Baird, Proc. Ac. Philad. 1858, p. 255 ; 
Bical, Meél. Biol. Ac. St. Petersb. xi. p. 460. 
Rhineura floridana, Cope, Proc, Ac. Philad. 1861, p. 75; Bocourt, 
Miss. Sc. Mex., Rept. p. 491, pl. xxix. 1. fig. 1. 
Rostral small, hexagonal, separating the nasals which rest on the 
first and second labials; a broad plate forming the edge of the 
snout; behind the latter a prefrontal, a larger frontal, and a pair of 
occipitals; ocular small, the eye not visible; a largo procular, a 
small infraocular, and a small and a large loreal ; four upper labials, 
fourth very large; mental small, pentagonal, narrowed anteriorly ; 
four chin-shields on a row; five lower labials. Two hundred and 
forty-four annuli on the body and eighteen on the tail (246—250+ 
17—18, Strauch) ; an annulus in the middle of the body cousists of 
twenty-eight segments; dorsal segments much longer than broad ; 
the two median ventrals broader than long. A vertebral line, no 
lateral line. Pectoral shields not much enlarged, forming four 
transverse series. Eight anal segments, median pair largest. The 
tubercles on the tail in thirteen transverse series. Colourless. 
millim. 
Length to vent ..........06-- 265 
PathecbiwGasa bce se atee seg ekcaes 17 
Diameter of body ............ 65 
Florida. 
a, Ad. Florida. E. D. Cope, Esq. [E.]. 
8. LEPIDOSTERNON.* 
Leposternon, Wagler, in Spix, Spec. Nov. Serp. Bras. p. 70. 
Lepidosternon, Wagl. Syst. Amph. p. 197; Dum. & Bibr. v. p. 508 ; 
Gray, Cat. Tort. 1844, p. 73, and Proc. Zool. Soc. 1865, p. 451. 
Cephalopeltis, Miller, in Teidem. u. Trevir. Zeitschr. f. Physiol. iv. 
1831, p. 257; Gray, Cat. Tort. p. 73, and Proc. Zool. Soc. 1865, 
p. 453. 
Nostril inferior, pierced in the rostral. Head depressed, with 
projecting snout. Pectoral segments enlarged. A strong gular fold. 
Tail cylindrical, obtuse. No preanal pores. 
South America. 
* For the mode of counting the annuli, see footnote under Monopeltis, p. 453. 
