462 
The Ohio Naturalist. 
[Vol. XII, No. 4, 
Endomychidae and the generic characters of the genus Symbiotes 
for his forthcoming paper on the Coleoptera of Indiana, gave a 
description of “ Symbiotes duryi Walton MS” (p. 536) in that 
most excellent report. The collection and study of representatives 
of the genus however, had not at that time proceeded sufficiently 
so that the description is of value in differentiating this species 
from the several other species of Symbiotes occurring in North 
America. 
Fig. 1. Symbiotes duryi n. sp. (x25). 
Is = longitudinal sulcus. ss = subsutural 
stria. 
The genus was founded by Redtenbacher in 1849 for the recep- 
tion of A. talus the generic name being based on the supposition 
that the species was myrmekophilous. While at times S. latus as 
well as other European forms appear to have been found in associa- 
tion with ants, it is evidently not characteristic in general of the 
species and the actual habitat is rather one of association with the 
lower forms of fungi on the spores of which the individuals feed, 
as noted in another part of the present paper. 
Only six species of Symbiotes have thus far been described, 
three from the European region, two from Japan, and one from 
South America. 
The two representatives of the species which have been found 
were taken under a slightly decayed hardwood log near the south 
side of the ‘‘Hotel Hill” road bridge at Gambier, the log being 
partially covered with one of the lower forms of fungi, on the spores 
of which the Symbiotes feed. In accordance with other represent- 
atives of the genus, the species is exceedingly small, being less 
than 2 mm. in length. The drawings below (Fig. 2) indicate cer- 
tain anatomical details. The description follows: 
