The Ohio Naturalist. 
[Vol. VII, No. 6, 
n 8 
grav, usually an elongate blackish spot on the front side of each 
femur and extreme apexes of all the tibiae and tarsal segments 
blackish; otherwise legs red. Wings uniformly reddish yellow 
all over, halteres pale yellow. Abdomen opaque black with a 
narrow gray band in front of each incisure and in the front 
margin of each of these bands there is on either side two or more 
bristles. The reddish wings and legs taken together are char¬ 
acteristic of the species. 
Length, 15 millimeters. Specimens from Douglas County, 
Kansas, taken in May and June by E. S. Tucker. 
Philonicus tuxpanganus Bellardi. Gibbosity of the face 
small with few bristles which are black above and white below; 
face rather narrow and clothed with white pollen; antenna 
black, first two segments with black hair, second segment shorter 
than the first, third segment slightly shorter than the other two 
together. Arista much slenderer than the third segment and a 
little shorter, palpi and proboscis black, beard white, Thorax 
everywhere clothed with silvery pollen, above with two black- 
stripes near the middle of the dorsum and two spots of the same 
color on either side, one before and the other behind the suture; 
wings with a slight smoky tinge but this is so faint that they 
well may be called hyaline and there is no apparent darkening 
at the apex as in many species of the subfamily. Coxae silvery, 
extreme bases of all the tibiae reddish, otherwise legs black with 
black bristles; halteres pale throughout. Abdomen shining 
black above with narrow white bands in front of the incisures; 
in the front border of each white band there is on each side two 
or more medium sized bristles, more prominent in the male than 
the female; venter of the abdomen silvery and with a few white 
hairs. 
Length, 12 15 millimeters. Taken at Gualan, Guatemala, 
January 13, and at Mazatenango, Guatemala, February 3, 1905. 
WINTER KEY TO OHIO CHESTNUTS. 
S. B. Stowe. 
Castanea Adans. Trees or shrubs with furrowed bark and 
terete branches; twigs with rather prominent lenticels, not 
zigzag; leaf scars alternate; bundle scars several, scattered; 
stipular scars present; terminal bud present or wanting; axillary 
buds sessile, single, with several exposed scales; pith small, solid 
more or less five-angled. 
1. Large trees; twigs glabrous and shining; outer bud scales glabrous. 
C. dentata (Marsh.) Borkh. Chestnut. 
1. Shrubs or small trees; twigs pubescent or puberulent, dull; outer bud 
scales pubescent. C. pumila (L.) Mill. Chinquapin. 
