118 TWENTY-FOURTH REPORT ON THE STATE MUSEUM. 



sentecl the following features : color light yellow-green ; the annulets 

 of the segments with whitish granulations, of which those on the 

 lateral portions of the third and fourth segments are aimulated with 

 black ; lateral bands, cream-colored, margined with black, having 

 the characteristic outline of maturity, showing the three component 

 sub-oval patches, of which the posterior is the largest, and incloses 

 the stigma except at its upper part. Head smooth, of a uniform deli 

 cate green. Horn four-tenths of an inch in length, slender, bending 

 anteriorly, ciliated, of a light reddish color, merging into a rose-color 

 at the tip ; its base occupying less than the posterior half of the tubercle ; 

 anterior to the base is a sub-triangular black wart resting on the crown 



&quot; O 



of the tubercle the development of the Ci small triangular black spot&quot; 

 of the preceding stage ; the tubercle is yellow, almost surrounded near 

 its base with a band, the extremities of which, instead of meeting, curve 

 upward to the horn posteriorly. Anal shield and plates, legs and 

 prolegs of a uniform green. 



A short time after molting, a change of color was observed, and at 

 the lapse of six hours it had assumed a salmon color. After a night s 

 feeding, it was found to be of a reddish-brown color, deeper than 

 that which it ordinarily bears at maturity, and in marked contrast 

 with its former garb. A figure taken of it at this time represents it 

 as one inch and one-fourth long, 12-lOOths of an inch in diameter at 

 the central segments, and with a horn, 34-100ths of an inch in 

 length, regularly curving anteriorly from its base to the tip. 



Fourth molt July 27th. Mead and body reddish-brown, but of 

 a lighter shade than before. Caudal horn absent, its former position 

 on the tubercle indicated by an oval spot having a central black dot. 

 Tubercle more prominent than in the preceding stage. 



The mature larva measured three and one-tenth inches in length, 

 by one-half an inch in diameter, when at rest, at which time its 

 small head is nearly hidden within the first segment, which is with 

 drawn within the second, over and in range with which projects the 

 third segment, presenting a front almost perpendicular to the body. 

 The posterior segment also descends almost perpendicularly from the 

 tubercle to the terminal prolegs. 



The descriptions and figures already published of this larva,* ren 

 der a further account at the present unnecessary. The excellent 

 figure given of it by Mr. Riley cannot fail of securing for it ready 

 identification. 



* Clemens : Jour. Acad. Nat. Scl. Ph., 1859, p. 155. Harris : Treat. Ins. 7?y. Veg., 1862, p. 325, f. 150. 

 Lintner: Proc. Ent. Soc. Ph., 1864, v. iii, p. 660. Harris: Ent. Corr., 1869, pi. 3, f. 11. Riley: Sc. 

 Sep. Ins. Mo., 1870, pp. 74, 75, f. 49. 



