204 
The Ohio Naturalist. 
[Vol. II, No. 4, 
head when out-turned ; palpi reaching slightly beyond border of head ; 
antennae minute, antennal cavities marked by distinct brown borders ; ocular 
fleck conspicuous; occipital angles produced and with a distinct hook. 
There are two minute hairs on the border in front of antennal pit, three just 
behind ocular fleck and two longer bristles between fleck and occipital angle 
about equidistant from each other — the fleck and the angle. Thorax broader 
than long, rather deeply concave in front and shallowly concave behind, the 
lateral angles prominent and with a bristle and two minute hairs ; postero- 
lateral angles rounded, with bristle and one minute hair. Metathorax with 
about four minute hairs on lateral border, antef'orly two long bristles on 
postero-lateral border. Abdominal segments with brown marginal stripe 
narrowing on eighth segment ; a light brownish discal area extending from 
base to near the tip and covering about half the width of the segments. 
This species agrees in coloration with diffusum var. pallidum 
Kellogg, but is much smaller than his measurements for diffusum, 
and the distinct hook of occipital angle would seem to separate it 
from that form. From sucinaceum, which it resembles in size, 
it is distinguished at once by the narrower front of head, different 
shape of occipital angles and number of bristles and the marginal 
abdominal bands. 
Described from three specimens, females, two from the Oregon 
juuco, Junco hyemalis oregonus, Ft. Collins, Colorado, collected 
by A. C. Stephenson, and one from Junco aikeni, Ft. Robinson, 
Neb., from Prof. Dawrence Bruner. It would seem probable that 
this form and Kellogg’s diffusum var. pallidum must be closely 
related, but so far as present specimens go they seem quite 
distinct. 
It is somewhat remarkable that in this genus nearly all descrip- 
tions have been from females only ; only four species, so far as I 
have noted, referring to males, a fact that would seem to indicate 
that the males are quite rare or manage to escape quickly from 
dead birds, though the females also are usually taken in but small 
numbers. 
Physostomuin diffusum Kellogg. 
Kellogg has described this species from specimens taken from 
the Sandwich sparrow, A mm od ram us sandwichensis, and the 
golden-crowned sparrow', Zonotrichia coronata. 
Specimens evidently belonging here have been sent me by Prof. 
Bruner, taken, one female from the Lincoln sparrow', Melospiza 
lincolni, Lincoln, Nebraska, and one female and one male from 
the Savanna sparrow, Ammodramus sandwichensis savanna, Lin- 
coln, Nebraska. The male is smaller than the female, 3 mm. 
long, and is lighter colored, the abdomen clear white or trans- 
parent, the genital fork inconspicuous faint brown, the ends of 
the prong broad and rounded, a more distinct brown, crescent- 
shaped genital ring. 
