OAK BARK-BEETLES. 93 
37. Xyleborus fuscatus Eichhorn. 
Beetle. — Length, 1 to 1£ lines. Ferruginous brown, or yellow, thinly clothed with 
gray hair, with the same form and sculpture as X. monographus, but somewhat smaller, 
and distinguished by the oblique declivity of the elytra being marked by only a 
single, large, acute tubercle, while the suture itself is also distinctly elevated. (Le 
Conte.) 
38. Xyleborus reiusicollis Zimmermann. 
Beetle. — Length, 1 line. Rust-yellow ; front smooth, with a deep longitudinal 
impression ; prothorax longer than wide, a little broader than the elytra, punctured 
in front ; thinly pubescent and very deeply excavated ; the front margin rising into 
an acute point ; behind nearly glabrous and smooth. Elytra short, punctured with- 
out order, thinly pubescent, obliquely declivous behind, and somewhat impressed 
along the suture. Maryland, found under oak-bark. (Le Conte.) 
39. Pityophthorus pubipennis Lee. 
Order Coleoptera ; Family Scolytid^e. 
Mr. Ricksecker remarks concerning the habits of this bark borer on 
the Pacific coast: 
I have seen great swarms of Pityophthorus pubipennis Lee. in the branches of 
newly felled live oaks, and have taken the same or an allied species from sticks of 
oak that had previously been peeled for tan-bark. (Ent. Amer., i, 97.) 
Beetle. — Club of antennae distinctly annulated and pubescent on both sides, not 
fringed with long hair. Fore tibiae moderately serrate; fore tarsi with joints 1 to 3 
stout, fifth longer than the others united. 
Male bead deeply concave; edge of the concavity fringed with long silky hairs. 
Female head shining, sparsely hairy, punctured with an interocular tubercle; the 
longer hairs of the elytra ( which are finely punctulate) are arranged in rows. (Le Conte 
and Horn.) 
40. Pityophthorus querciperda Schwarz. 
Mr. Schwarz has observed the habits of this Scolytid beetle, and also 
described the beetle in the Proceedings of the Entomological Society of 
Washington (i, 56), stating that it occurs from New York to Florida. 
On page 162 of the same Proceedings Mr. John D. Sherman records 
finding some sixty or seventy specimens under the bark of a felled oak 
tree at Peekskill, N. Y. 
The galleries, which are partly in the bark and partly in the outermost layer of 
the wood, are the primary galleries — i. e., those made by the parent beetle — and ex- 
hibited a feature hitherto not observed in any other Scolytid. The female beetle 
bores straight through the bark; then follows a very short gallery vertically down- 
ward, and this is crossed immediately below the entrance hole by an extremely long 
transverse gallery. The novelty consists in the short vertical gallery, which, evi- 
dently, is constructed only for the purpose of enabling the beetle to turn around 
without getting on the outside of the tree. The larval galleries, if there be any, are 
not yet known. (Schwarz.) 
Beetle. — This new species belongs to Le Conte's group B, and may be called Pityoph- 
thorus querciperda. It is closely allied to P. minulissimus, with which it agrees in 
size, f'jrm, and coloration, but from which it differs in the sculpture and pubescence 
of the elytra. In minutissimus the elytra are finely and rather indistinctly punctu- 
late ; the pubescence is fine, very sparse or nearly absent on the basal portion of the 
elytra and denser on the declivity, but always hair-like. In querciperda the elytra 
are quite distinctly rugosely punctulate, and, therefore, less shining. The pubescence 
