FAUNA OF PENIKESE ISLAND. 



35 



Ccelambus incEqualis Fabricius; Pond i-B\ six specimens. 

 Deronectes depressus Fabricius; Pond i-B] ten specimens. 

 Dytiscus fasciventris Say ; Pond i-C; two specimens. 

 Hydrophilus obtusatus (Say); Pond i-B; one specimen. 

 Haliplus riificollis DeGeer; Pond 2~B] eighteen specimens. 

 Hydroporus americanus Aube; Pond i~B\ three specimens. 

 Hydroporus modestus Aube; Pond 2~B\ twelve specimens. 

 Hydroporus niger Say; Pond i~B\ fourteen specimens. 

 Hydroporus proximus Aube] Pond i-B; two specimens. 

 Hydroporus stagnalis G. & H.; Pond i-B] seventeen specimens. 

 Hydroporus tenehrosus Lecepede; Pond i-B\ one specimen. 

 Hydroporus undulatus Say; Pond i-B\ twenty specimens. 

 Octhehius Joveicollis Lecepede; Pond 2-Z); two specimens. 

 Philhydrus cinctus Say; Pond 2-D] fifty specimens. 

 Philhydrus nebulosus Say; Pond i-D] one specimen. 

 Rhantus hinotatus Harris; Pond i-D\ two specimens. 

 Rhantus histriatus Bergst.; Pond i-B ] one specimen. 

 Thermonectes hasilaris Harris; Pond i-D; two specimens. 

 Tro pis ternus glaber Herhst; Pond 2-.B; six specimens. 

 Tropisternus nimhatus Say; Pond i-C; one specimen. 



Hymenoptera. 

 (Identification by C. W. Johnson, Boston Society 

 of Natural History.) 



Ichneumonidae. 



Therion morio Fabr. 

 Formididae.^ 



Myrmica scabrinodis Nyl. subsp. schencki Emery var. emery ana 

 Forel. 



Lasius niger Linn. var. americanus Emery. 



Lasius (Chthonolasius) hrevicornis Emery. 

 Halictidae. 



Halictus provancheri Cress? 

 Megachilidae. 



Osmia lignaria Say. 

 Apidae. 



Bombus fervidus Fabr. 



1 Identified for the Boston Society of Natural History by Dr. W. M. Wheeler. 



