204 Forty-first Report on the State Museum. 



larger on tlie middle, then by three others, and last by two on the 

 tips of the covers; one-half of the central one in each line of three 

 spots rests on each wing-cover. The legs and body beneath, except 

 its margin, are black. 



Its Extended Distribution. 

 This insect has an unusually wide distribution over the world, 

 occurring in Canada, the United States, Central America, South 

 America and Europe. 



Chauliognathus marginatus (Fabr.). 



The Margined Soldier- Beetle. 



(Ord. CoLEOPTEKA : Fam. Lampykid^.) 



Fabricius: Syst. Ent., 1775, p. 206; Spec. Ins., 1781, p. 259, No. 8; Mant. 



Ins., 1787, p. 157, No. 9 {Cantliaris marginata). 

 Hentz: in Trans. Amer. Philos. Soc, 2d Ser., iii, 1830, p. 460, pi. 15, figs. 



1, a -/(description, habits and peculiar structure). 

 LeConte: in Proc. Acad. Nat. Sci. Phil., v, 1851, p. 338 (as C. Hentzii) ; 



in Trans. Amer. Ent. Soc, ix, 1881, pp. 44, 68. 

 Walsh : in Amer. EntomoL, i, 1868, p. 52 (compared with C. Pennsytv aniens). 

 Eiley: 5th Eept. Ins. Mo., 1873, p. 154 (food-habits). 



Provancher: Pet. Faun. Entomolog. Can.— Coleop., 1877, p. 414-5 (descript). 

 Glover: MS. Notes Journ.— Cotton, 1878, pi. 13, fig. 6 (on cotton). 

 Trelease : in Comstock's Cotton Ins., 1879, p. 322 (food). 

 Lintner: in Count. Gent., xlix, 1884, p. 897 (larva in apples). 

 Henshaw: List Coleop. N. A. Amer., 1885, p. 77, No. 4876. 



The Insect Mistaken for a Fruit Pest. 

 The need of such a knowledge of insects as will enable the agri- 

 culturist, the fruit-grower, etc., to know and readily recognize his 

 insect friends, and thereby spare them so far as may be from the 

 destruction with which he would visit his insect foes, has often betn 

 urged by entomological writers. Such need is shown in the following 

 note received: 



Inclosed please find specimens of an insect very destructive to our 

 better class of apples. — wine saps, etc. I should like to learn its name, 

 habits, and how to meet it practically. This larva makes a round hole 

 in the apples sideways, enlarging the hole often to half or three-quar- 

 ters of an inch in diameter, when, as a result, the apple rots and droj)s. 

 To destroy the larva by hand would necessitate removal of more than 

 one-sixth of the crop — too slow and not thorough, for obvious reasons. 

 The small ants attack the insect, biting into its back, and adhering 

 sometimes, but without effect. The larger ants, bugs- (of the white 

 grub transformation), etc., feed in company with the insect. Quinces 

 rot enormously, and, in about two-thirds of the specimens on the 

 ground, I find the holes probably made by this same insect. 



