SYNOPSES AND DESCRIPTIONS. 8 
Nasal small, rectangular, half as wide as the rostral at the mouth. Pre- 
oculars twice as high as wide. Oculars smaller than the preoculars, 
similar in shape. Crown-shields small; one prefrontal, one frontal, two 
supraoculars, and two parietals, Scales small in 22 longitudinal rows; 
transverse rows 512. 
Anterior portion of the head yellowish; body uniform ashy gray. Hab. 
North America, (Irom descr.) 
TYPHLOPS PERDITUS. 
Peters, 1869, Monatsberichte Berl. Akad., 435. 
Eyes invisible. Nostrils at the end of the snout. Head shields similar 
to those of 7. reticulatus, except that the posterior margin of the naso- 
rostral is much less concave and the preocular less bent forward. Scales 
in 18 longitudinal rows. Dorsal scales olivaceous brown with yellowish- 
ereen margins. Beneath and on the end of the snout greenish-yellow. 
(From descr.) Said to be from Orizaba, Mexico. Total length 0", 285; 
tail 0", O04, 
TYPHLOPS BASIMACULATUS. 
Cope, 1866, Pr. Ac. N. Sc. Phil., 320. 
Body compressed posteriorly ; head depressed, muzzle from above rounded 
truncate; tail narrowed, obtuse. Rostral narrow. Lye invisible, ocular 
extending to labials. A preocular, little wider than ocular. Supralabials 
four. Scales in 18 longitudinal rows. Yellow, scales of seven dorsal rows 
with a large brown spot at the base. Top of head and end of tail immac- 
ulate. Cordova and Orizaba, Mexico. (rom descr.) 
TypHLops (IDIOTYPHLOPS) EMUNCTUS spec. nov. 
Very long, slender, enlarging toward the tail; head not distinct from 
the neck, slightly depressed, rounded, muzzle extending beyond the lower 
jaw; tail not longer than the thickness of the body at the vent, rounded 
to a point. Eye small, indistinct or invisible. Shields of the side of the 
head small.  Rostral large, bent far back on the head, lateral margins 
concave, rather narrow, widening toward the top of the head, followed by 
two short, broad verticals, acute angled laterally, of which the posterior 
is shorter. Nasal deeper than long, divided diagonally from end to end; 
nostril opening forward. Above the nasal a small plate has the form of a 
spherical triangle with concave sides. Labials four; posterior scale-like; 
anterior largest, beneath the nasal and extending forward in a long point 
