196 HELIX, HIPPOBOSCA. 
or skin; whorls ‘7, crossed on the spire by cury- 
ed wrinkles and somewhat on the body ; aper- 
ture subovate, about a third as long as the shell. 
Length about an inch, breadth more than equal 
to a third of the length. A Buccinium of 
Gmelin. : 
vivipara, shell subconic, with six rounded whorls, 
suture impressed ; olive or pale, having three 
reddish-brown bands ; aperture suborbicular, 
equalling about half the length of the, shell. 
Length about an inch, breadth about two-thirds 
as much. 
decisa, shell subconic, olive ; apex minute, whorls 
four, wrinkled across and banded with minute 
distant striz ; terminal whorl very short ; su- 
iure impressed; aperture subovate, about half 
the length of the shell ; bluish-white within. 
Length about an inch, breadth about three- 
fourths as great. 
see MS. P. 
8—8. Hemerosnius. Spec. 4. 
pulsatorium, (false death-watch,) mostly wingless ; 
abdomen oblong ; mouth red; eyes yellow. 
‘The female makes a noise like the ticking of a 
watch, or like the Ptinus pulsator. 
ace MS. 2”. 
8—i2. Hippozosca. Spec. 5. 
eguina, Chorse-fly,) wings obtuse ; thorax varie- 
gated ; feet armed with four claws; head 
brown ; wings crossing. 
ovina, (sheep-bug,) destitute of wings ; body dull 
testaceous. 
See MS. P. 
