We have seen in several of my previos papers that the Owlet Moths, or Noctuidœ of temperate North America, the United States and Canada, resemble most strongly those of Europe. The divergence lies chiefly in the greater number of species belonging to the Noctudiœ fasciatœ, or Catocalinœ; and this is a tropical feature, such forms becoming more plentiufl as we go southward, although Catacala, the typical genus of the group, does not seem to cross the equator, to which latter fact I have already called attention.

Appreciating the value to students in geographical distribution of faunal lists of a given region, with notes thereon, on the interest that such lists have for beginners in the same field in after years, we have concluded to publish here a list of the Diurnal Lepidoptera known to us to have been taken in the vicinity of Philadelphia. A circle drawn around the new City Hall, with a radius of ten miles, is the line of limit to the “vicinity” here treated of.

The larvæ of Tarucus theophrastus Fabricus are cultivated and protected by the large, common black ants of Indian gardens and houses. The catepillar, which varies in colour from light pure green to a dark reddish tint [this is a common variation in Lycænid larvæ] is about threequarters of an inch long, louse-like in shape, and slow in movement, and it feeds on the Zizyphus jujuba, a small, thorny bush of the jungles with an edible, astringent, yellowish fruit, the “Byr-coolie” of the natives. Some Lycæindæ larvæ have the power of protruding and retracting at will two small, fleshy tentacles or horns, each tufted with a brush of fine hairs, from the upper surface of the tail segments.

3443—Trogoderma tarsale Melsh. Not rare.

3683—Carpophilus antiquus Melsh. Rare; under bark of dead maple andbeech.

3686—Colastus maculatus Er. Rare; took three or four from the stump of a maple tree, cut while the sap was running.

3712—Eupurœa peltoidesHorn.

3753—Cryptarcha strigata Fab.

3823—Corticaria pumila Lec.

3871—Bactridium striolatum Reit.

Egg.—Nearly spherical, flattened at the base, marked with about twenty-five longitudinal ribs and numerous transverse ridge, the former somewhat irregular and running to a depression on the summit; color whitish, with a circle around the middle and a spot on top of purplishbrown; these marks more or les confluent. Length about .5 mm.

I have lately had on opportunity of examining bred specimens of the European Ochria ochracea(flavago). The clypeal tubercle may be felt with a fine pin or seen under the glass when the frontal scales are partly removed. We have two North American species agreeing with Ochria, viz., Sanzalitae, from California, and Buffaleonsis, from the east. With the former, the European species has a nearer resemblane externally; our eastern species differing much in colour.