462 



The Ohio Naturalut. 



[Vol. XII, No. 4, 



Endomycliidae 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 vSymbiotes occurring in North 

 America. 



6" 5 



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 5'. latus the generic name being based on the supposition 

 that the sijccies 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 w^hich 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 Gambler, 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: 



