270 Beaj. D. Walsh on the Insects inhabiting the Galls 



So far as I can judge at present, there are very numerous Phyto- 

 phagic species of this genus, that cannot be satisfactorily separated 

 without breeding large numbers of each from its peculiar food-plant. 

 Dr. LeConte tells me that his collection comprises no less than 35 N. 

 A. species of Apion. 



Family GALERUCIDvE. 



Haltica alternata Illig. Bred one specimen of the Phytopha- 

 gic variety with the elytral vittte subobsolete, QProc. etc. Ill, p. 404,) 

 Aug. 6. from the Cecidoinyidous gall S. brassicoides Walsh of the same 

 season's growth, and captured another at large on that gall about the 

 same date. The sis specimens with the elytral vittae distinct but nar- 

 row, spoken of {ibid.) as captured on that gall, proved on a more careful 

 examination to belong to H. punctigera Lee, a closely allied but very 

 distinct species. 



Family Chrysomelid^E. 

 Paria sex-notata Say. Bred one specimen, Aug. 14, from the 

 Cecidomyidous gall S. brassicoides Walsh of the same season's 

 growth. 



OBTHOPTEBA PSEUDONEUBOPTEBA.— INQUILINES. 



Family Psocid^e. 



Psocus RUFUS Walsh. A single specimen of this rare species was 

 bred by me, Sep. 2. from the Cecidomyidous gall S. brassicoides Walsh 

 of the same season's trrowth. 



&' 



LEPIDOPTEBA.— INQUILINES. 

 Family JEgeriad^e. 



Trochilium hospes, n. sp. — % Blue-black. Head with wide interior orbits and 

 also the lower part of the face, silvery-white. Antennae blue-black, with the 

 1st joint beneath, as also the palpi, except their last joint above, golden-yel- 

 low. Thorax with the edges of the shoulder-covers, and the mesothoracic pleu- 

 ra, golden-yellow. Abdomen above with a very narrow band i the way, and a 

 rather wider one J way to the tip of the abdomen, and also the lateral edges of 

 the caudal brush, all golden-yellow. Venter with the extreme base and a large 

 spot in the middle occupying about 3 joints, golden-yellow. Legs golden-yel- 

 low. Front legs with the outside of the femora, black on their basal §, and the 

 tips of the tibiae and the tarsal incisures, all blackish in certain lights. Four 

 hind legs with the coxae, except their extreme tips, the outside of the femora, 

 the tips of the tibiae, and in the hind legs their extreme base also, and in certain 

 lights the tarsal incisures, all blue-black. Wings hyaline ; front wings with a 

 band on the arc and a broad terminal one, streaked with golden-yellow between 

 the veins, blue-black; both wings with the costa partly golden-yellow and the 

 fringe brown-black. Length % .28 inch. Expanse % .57 inch. 



