May 1S96.] 



PSrCHE. 



379 



E Ocular emai-giiiatiou tilled by a strong swelling; sternal markings 

 forming a quadrilateral without median hlotchcs. 



NitzscJiia Deuiiy. 



EE Ocular emargination without swelling, hardly apparent or en- 



tirel}' lacking; median blotches on sternum. 



F Very large ; with two 2-pointed appendages on ventral aspect of 



hind-head; anterior coxae with very long lobedike appendages. 



Ancistrona M'cstzvood. 

 FF Small or median ; without bi-25artite appendages of hind-head. 



]\/etiopo?2 A'. 



NOTES ON THE WINTER INSECT FAUNA OF VIGO COUNTY 



INDIANA.— V. 



BY W. S. BLATCHI.EV, INDIANAPOLIS, INDIANA. 



COLEOPTERA (Cont.). 



A number of beetles belonging to the 

 families Dytiscidae, Gyrinidae and Hv- 

 drophilidae, doubtless pass the win- 

 ter as imagoes,* hibernating in the 

 waters of the deeper pools of ponds and 

 streams, or beneath the mud and drift- 

 wood near their margins. The oppor- 

 tunity did not occur to make a special 

 investigation of such pools, and there- 

 fore but two species of water beetles 

 were taken during the winter collecting. 



Hydrophilidae. 



78, Berostis striatus Say. The 

 only specimen taken in the countv was 

 found Feb. 26, deeply buried in damp 

 sand, beneath a log on margin of old 

 canal. 



* Imagoes of the genera Dytiscus and Hydrophilus have 

 been seen by the writer on numerous occasions in early 

 April. 



79, Philhydi-HS cinctus Sav. On 

 two occasions in February from beneath 

 logs close to ponds. Common in sum- 

 mer. 



SlLPHIDAE. 



So, Silpha surinamensis Fab. Dec. 

 iS. 



Si, S. !?!eqita!is Yah. Jan. 16. 



The above were taken on several oc- 

 casions beneath logs close to carrion. 

 Surinamensis is found only singlv or in 

 pairs. Inequalis is gregarious, winters 

 in dillerent stages, and in Indiana is 

 the most abundantly represented species 

 of the family-. 



82, Choleva basiUaris Say. One 

 specimen, Dec. 3, from beneath a rail 

 in upland field. 



S3, Agathidium spy One Dec. 23. 

 Beneath chunk. 



Besides the four species mentioned, 

 two others, Necrophorus orbicoUis 



