INSECTS LIVING IN ROTTEN OAK WOOD. 223 
Dendroides canadensis Latr. Under bark of stumps and felled trees. 
(Riley, also Chittenden.) 
Cucujus clavipes Fabr. Under bark of stumps and felled trees. 
Strongylium terminatum Say. Larvae of this insect were found Jan- 
uary 12, 1882, at Washington, D. C, feeding in rotten oak 
wood. The full grown larva measures about 1 inch in length. 
They are polished, yellowish white, and cylindrical, the two last 
segments brownish yellow. Tip of last segment truncate, with 
two black, upward curved horns. There is also on the dorsum 
of this segment a blackish transverse ridge divided at the middle, 
and each half beset with live or six short, sharp teeth. The 
beetle issued the 12th of June. (Riley's unpublished notes; see 
also, Schwarz, Amer. Nat, October, 1882, 823.) 
Mordella ^-punctata Fabr. Larva found in old oak stumps. Color: 
Head yellowish white with three distinct yellowish lines above. 
Legs short. Tail pointed, horny and blackish brown. (Riley's 
unpublished notes.) 
Hymenorus communis Lee. Found in Maryland, February 22, 1884, 
numbers of larvae of above beetle boring in a rotten oak stump, 
the largest of which measured about ll mm in length. They are 
highly polished and pale yellow, the head and posterior margin 
of the thoracic and first three abdominal segments somewhat 
darker. A large squarish spot on the eighth and the greater ante 
rior part of the last segment quite dark yellow ; labrum brown ; 
tip of body rounded. The first beetle issued May 1. (Riley's 
unpublished notes.) 
Pelidnota punctata Linn. Lamellicorn larva in rotten oak stump. 
Riley has published a full account (3rd Rep. Ins., Mo., p. 319). 
Dinoderus punctatus (Say). Boring in an oak stump ; abundant; ap- 
pears to be parasitized. (F. L. Chittenden in letter). 
Parandra brunnea Fabr. Under bark. (Chittenden.) 
Ceruchus piceus (Weber). In decaying oak wood. (Chittenden.) 
Nyctobates pensylvanicus (De Geer). Under bark. (Chittenden.) 
Hypulus simulator (Newman). In decaying wood. (Chittenden.) 
Osmoderma scabra Beau v. In decaying oak wood. (Beutenmiiller, 
Psyche v, 281, 1880.) 
Osmoderma eremicola Knoch. (Coquillett in letter.) 
AtJwus cucullatits Say. (Coquillett in letter.) 
Androchirus fascipes Mels. (Coquillett in letter.) 
Elater nigricollis Herbst. (Coquillett in letter.) 
Lyctus striatus Melsh. 
Trogoxylon paralleopipedum (Melsh.) The two latter species probably 
bore in dry oak wood, injuring furniture, etc. (Riley, Scientific 
American, Dec. 21, 1889.) 
