480 FIFTH REPORT OP THE ENTOMOLOGICAL COMMISSION. 



the second becoming more and more at right angles to the band, the last short and broad 

 near the tip of the body. Elevpn rounded dark-green spots in the whitish field ; the 

 pair near the shoulders gourd-shaped ; two of the spots behind the middle of the elytra 

 touching each other. The pits or punctures near the sutures of the elytra arranged 

 in three lines parallel to the median line of union of the body ; elsewhere they are 

 arranged irregularly. 



10. The leaf-mining hispa. 



Odontota rubra Weber. 



Mr. W. L. Devereaux writes us from Clyde, N. Y., that this beetle 

 " is a very conspicuous pest here, destroying the entire foliage of every 

 bass-wood in many forests, excepting trees of great height." 



11. The linden gall mite. 



Phytopius ahnormis Garman. 



Produces galls on the leaves of the American linden or bass-wood, Tilia americana 

 Linn. 



The transverse strife of the abdomen number about 56. This mite 

 differs from all the other Phytopti I have seen in that the abdomen, 

 just before the terminal sucker, is noticeably enlarged. But few speci- 

 mens have been examined, as they have been very rare. In many 

 of the galls, comparatively large, elongate eggs occur, which probably 

 belong to some larger mite which preys on the gall-mites. 



The gall is top-shaped, expanding above and contracting towards 

 the upper surface of the leaves into a neck. It measures .155 inch in 

 height, and .100 inch in diameter. The walls are deeply infolded, 

 sometimes giving rise to unequal lobes. The outer surface is smooth, 

 green and devoid of hairs. The cavity of the gall is made unsym- 

 metrical by the deeper impressions of the wall. The inside of the 

 latter is slightly roughened by small folds, and is clothed with long 

 aciculate, unicellular hairs. These galls occur sparingly on the leaves 

 of large trees in open woods at Bloomiugton, 111. (H. Garman in 

 Forbes's 1st Illinois Et.) 



The following insects also occur on the linden: , 



Order Hymenoptera. 



12. Selandria tilice Norton (Trans. Amer. Ent. See, i, 250). 



Order Lepidoptera. 



13. Limenitis arthemis (Drury). (Scudder). 



14. Grapta interrogationis (Fabricius). 



15. Orapta comma Harris. " On Linden, October 17." (Riley's MS. 



notes.) 



16. Papilio glaucus Linn. (Scudder). 



17. Papilio turnus Linn. (Ent. Soc. Ontario), 



18. Ceratomia amyntor lllibu. (Lintner i, 188), 



