Hubbard and Schwarz.] 666 [April 18, 
Xyloterus politus Say. Hylesinus opaculus Say. 
Xyleborus celsus Hichh. Dendroctonus similis Lec. H. 
fuscatus Hichh. Hylurgops pinifex Fitch. H. 
biographus Lec 
xylographus Zimm. Lansing. ANTHRIBID ZA. 
ceelatus Zimm. 
punctipennis Lec. n. sp. M. Burymycter fasciatus Oliv. 
Dryocostes septentrionis Mannh. Hormiscus saltator Lec. 
affaber Mannh. Eusphyrus Walshii Lec. 
Xylocleptes decipiens Lec. n. sp. Cratoparis lunatus Fab. 
Cryphalus rigidus Lec. Brachytarsus tomentosus Say. 
Tomicus pini Say. H. variegatus Say. 
Micracis suturalis Lec. Choragus Harrisii Lec. n. sp. 
rudis Lec. Huxenus punctatus Lec. 
opacicollis Lec. n. sp. 
asperulus Lec. n. sp. : APIONIDZ. 
Chramesus Icoriz Lec. 
Phlceotribus liminaris Harr. Lan- Apion rostrum Say. 
sing. several unnamed species. 
Hylesinus aculeatus Say. 
4. Description of the Larva of MiIcROMALTHUS DEBILIS Lec. 
By H. G. Husparp. 
Color transparent white, mandibles and anal appendage castaneous. 
Form cylindrical, very slightly flattened beneath, hardly narrowed lat- 
erally in front and behind. Body glabrous, except a few hardly visible 
hairs upon the sides, without legs. Length 0.10-.12 inch.; width about 
0.03 inches. 
Head not quite as broad as the segments of the abdomen, convex, trans- 
verse, enlarged posteriorly; sides rounded, convex ; anterior border nearly 
straight, posterior border emarginate ; above and below a few long bristles. 
No ocelii. 
Antenne short, inserted in depressions on the anterior angles of the 
head, of four joints increasing in length, the first very short, transverse, 
the second smaller, about as long as broad, the third longer than the pre- 
ceding, with a short oval lobe below, before the tip, the fourth twice as 
long as the third, slender, blade-shaped, tipped with a minute spine. 
Labrum transverse, somewhat enlarged anteriorly, borders nearly 
straight, anterior angles rounded, with long stout spines above and below. 
Mandibles as long as the antenne, stout, curved, three-toothed with a large 
hatchet-shaped basal lobe, obliquely ridged upon the under surface. 
Maxille, very large and prominent, longer than the mandibles ; with 
palpi of three joints, the first and second short, cylindrical, the third as 
long as the first and second united, more slender, flat, and divided nearly 
to the base into two superimposed lobes bearing papille ; maxillary lobe 
