’THE INSECTS OE NEW JERSEY. 225 
side, salt meadows (Bf); Westville VII, 9 (Brn); Lakehurst (Rob); 
g. d. (Li). 
H. tuberculatus Gyll. Spotsw'ood (Rob); Westville (Li). 
HYDROCHUS Leach. 
/ H. scabratus Muls. Ft. Lee (Bt); Newark (Soc); Long Branch (Ch); 
Trenton VIII, 6, Delair IX, 1 (Coll); Westville I, 28, sifting (W); 
Spotswood, Lakehurst (Rob); g. d. (Li). 
H. inaequalis Lee. Staten Island V (Bt); Atlantic Co. (Rob). 
H. subcupreus Rand. Atlantic Co. (Rob); “New Jersey” (U M). 
H. variolatus Lee. Camden, not rare (Li). 
H. squamifer Lee. Lake Hopatcong (Pm); Monmouth Co. (Rob); Mer- 
chantville III, 10, DaCosta, Anglesea VII, 30 (Brn). 
Ochthebius benefossus Lee. was included in the previous list on a speci¬ 
men labelled “New Jersey” in the Horn collection. Mr. Schwarz claimed 
at the time that the locality was incorrect, and as the species has not 
turned up since, and Mr. Roberts doubts the occurrence of any species of 
the genus in New Jersey, it is deemed better to- omit it. 
HYDR/ENA Kug. 
H. pennsylvanica Kies. Ft. Lee, Snake Hill, sifting, IX (Sf); Woodside 
(Bf); Monmouth, Ocean Co. (Rob); Petersburg VI, 18 (Brn). 
HYDROUS Leach. (HYDROPHILUS Geoff.) 
H. ovatus G & H. Newark (Soc); New Brunswick VII, 24, Woodbury 
V, 5, Lakewood (Coll); Monmouth Co. (Rob); Riverton VII, 16, An¬ 
glesea IX, 4 (GG); Westville (Li); Mt. Holly III, 17 (Dke); always 
rare. 
H. triangularis Say. Throughout the State, often common and some¬ 
times attracted in great numbers to electric lights. 
A water-scavenger, Hydrophilus triangularis. — a, the larva ; b , male adult ; c, pupa ; d, 
opened, and e , closed egg case ; f to i, enlarged structural details of the adult. 
Fig. 91. 
15 IN 
