1878.] 
Dineutes assimilis Aub. 
Gyrinus fraternus Coup. 
zeneolus Lec. 
limbatus Say. 
ventralis Kby. 
maculiventris Lec. 
picipes Aub. 
analis Say. 
minutus Fab. H. 
HYDROPHILIDZ. 
Helophorus lineatus Say. 
tuberculatus Gyllh. 
sp. near lacustris. 
two new species. 
Hydrochus squamifer Lec. 
two new sp. 
Hydreena pensylvanica Kw. 
Hydrophilus ovatus Har. 
triangularis Say. 
Tropisternus nimbatus Say. 
glaber Hbst. 
mixtus Lec. 
Hydrocharis obtusatus Say. 
Berosus striatus Say. 
Chetarthria pallida Lec. 
Philhydrus nebulosus Say. 
bifidus Lec. 
ochraceus Mels. 
consors Lec. 
cinctus Say. 
perplexus Lec. 
fimbriatus Melsh. 
Hydrobius fuscipes Linn. 
digestus Lec. 
subcupreus Say. 
despectus Lec. 
feminalis Lec. n. sp. 
Cyclonotum estriatum Say. 
Cercyon flavipes Er. 
naviculare Zimm. 
centromaculatum St. 
preetextatum Say. 
ocellatum Say. 
unipunctatum Linn. 
647 [Hubbard and Schwarz. 
Cercyon anale Er. 
two unnamed species. 
Cryptopleurum vagans Lec. 
TRICHOPTERYGIDZ. 
Nogsidium americanum Mots. 
Nn. sp. 
Ptenidium evanescens Marsham. 
lineatum Lec.? 
sp. 
Ptilium Collani Mkl. 
Smicrus filicornis Fairm. 
Trichopteryx aspera Hald. 
parallela Mots. 
Dohrnii Matth. 
Haldemani Lec. 
several unnamed species. 
Pteryx balteata Lec. 
n. sp. 
Ptinella quercus Lec. 
n. sp. 
STAPHYLINIDZA. 
Falagria cingulata Lec. 
bilobata Say. 
dissecta Er. 
venustula Er. 
Hoplandria lateralis Melsh. 
Homalota trimaculata Er. 
analis Grav. 
lividipennis Mannh. 
numerous unnamed species. 
Placusa sp. 
Calodera several species. 
Bolitochara sp. 
Myrmedonia sp. A. 
Atemeles cavus Lec. A. 
Aleochara lata Grav. 
brachyptera Fourc. 
nitida Grav. 
several unnamed species. 
Oxypoda several species. 
Phiceopora sp. 
Oligota pedalis Lec. 
two unnamed species. 
