8. LEPIDOSTERNON. 465 
posterior angle wedged in between a pair of large elongate pentago- 
nal parietals ; occipitals very small ; eye distinct through the ocular ; 
an infraocular, a preocular, and a supraocular ; latter large, elongate; 
four temporals, upper very large; three upper labials, first small, 
second large, third very small; mental very small, four-sided, as 
long as, or longer than broad, followed by a large median chin- 
shield, which is separated from the labials by a pair of narrow lateral 
chin-shields on each side; another lateral chin-shield on each side, 
on a line with the third infralabial; infralabials three, first very 
small, second large. Two hundred and eighty-six to two hundred 
and ninety-five annuli on the body and seventeen on the tail: an 
annulus on the middle of the body contains twenty-six to thirty 
dorsal and twenty-four or twenty-six ventral segments. Pectoral 
shields small, numerous, longer than broad, forming oblique series. 
Anal segments in two rows, slightly enlarged. Lateral, vertebral, and 
veutral lines distinct. Colourless or pale brownish above. 
millim 
Length to vent .......... 340 
UP ait. sap eoaetie 8 kt ae dete eecaptah ogee . 17 
Diameter of body ............ 9 
Brazil. 
a, Ad. (Annuli 295+17). Recife, Pernambuco. W. A. Forbes, Esq. [P. ]. 
b, Ad, (A. 286417). S. America. Sir A. Smith [P.]. 
(Type of L. gray.) 
c, Ad., escaping from the side of the body on an Elaps lemniscatus. 
Specimen with anomalous head-shields.” See P. Z. 8. 1885, p. 827. 
8. Lepidosternon crassum. 
Lepidosternon crassum, Strauch, Mél, Biol. Ac. St. Petersb. xi. p. 443. 
Head as in ZL, microcephalum, but shorter. Rostral rather large, 
in contact with the anterior angle of the frontal ; preefrontals large, 
broader than long, separated by the frontal ; latter large, penta- 
gonal, a little broader than long, with a deep median groove, con- 
tinued from the rostral; a pair of parietals, quadrangular, somewhat 
broader than long, followed by a pair of small broad occipitals ; eye 
feebly distinct through the ocular; supraocular imperfectly separated 
from the frontal, rather small, square; three temporals, the upper 
nearly as large as the two others together ; two upper labials, first 
very large, second small. Mental square, as long as broad, appa- 
rently soldered with the anterior chin-shield ; a lateral chin-shield 
on each side; two lower labials, first very large, second very small. 
Body remarkably thick ; two hundred and twelve annuli on the body 
and fifteen on the tail; an annulus contains twenty-two dorsal and 
twenty ventral segments, those on the middle of the belly a little 
broader than long; pectoral shields rather irregular, numbering 
about eight, elongate, some, however, divided transversely into two or 
three, others confluent with those on the sides ; seven anal segments ; 
vertebral and lateral lines strongly, ventral feebly marked. Light 
VOL. II. 2H 
