1864.] 418 



white tussock-larvje on the trunks of the buttonwood [sycamore], which 

 he presumes must be those of H. fesxellaris, though he has not identi- 

 fied them with that species." In mature or nearly mature Antiphola 

 the head is black ; in half-grown or quarter-grown individuals, espe- 

 cially the latter, generally but not always pale rufous. In f/^ssellaris of 

 all ages the head is as described by Harris '"brownish yellow" or pale 

 rufous. (Ibid.^ 



I strongly incline to believe that Antiphola is the species known to 

 Dr. Harris only in the larva state, and stated by him to occur '• on the 

 black walnut, the butternut, the ash and even on the oak," (^ihiiL p. 

 362,) although that species is not described by him as having any pen- 

 cils on the 3rd segment, as Antiphola has. In all other respects the 

 description agrees exactly. The pencils in the larvfe of this genus are so 

 fragile, that the least touch knocks them oft", and the specimen or spe- 

 cimens examined by Dr. Harris might have been so mutilated. There 

 seems some peculiar proclivity to error in the matter of these pencils ; 

 for besides my own blunder referred to above, in the recent illustrated 

 edition of Dr. Harris's Injuriotis Injects the larva of IT. ca7-i/ae is figured 

 with black pencils both on the 10th and 11th segments, whereas accord- 

 ing to Dr. Harris's own description it has none on the 11th segment. 

 (Compare I)ij. Ins. Plate vi. fig. 1 and p. 361.) Whether the draughts- 

 man or the engraver is here in error, or whether Dr. Harris himself is 

 in error, I cannot say, as the species, though it occurs near Rock Island 

 very rarely in the imago, is totally unknown to me in the larva state ; 

 but there is evidently error somewhere. I subjoin an amended and 

 enlarged description of the larva of Antiphola. 



H. Antiphola Walsh, (larva.) Head black, polished, the mouth varied with 

 white. Bodi/ opanue black above, pale on the venter, covered above with dense 

 hairs proceeding from little warts in evenly-shorn brushes or tufts, which are 

 dorsally a little darker, and vary in color in different specimens from dirty 

 whitish or occasionally almost pure white to fuscous cinereous, and from pale 

 gamboge-yellowish to ochre-yellowish and pale yellowish brown, the brushes 

 on the back converging so as to form a dense dorsal ridge. On the 2nd seg- 

 ment behind the head one lateral black pencil and two milk-white ones under 

 it, all transversely arranged, the black pencils generally in repose directed ho- 

 rizontally forwards. On the .3rd segment one lateral black pencil and one milk- 

 white one under it, directed obliquely forwards. On the 11th segment one late- 

 ral black pencil directed obliquely backwards, and on the 12th segment one 

 less obvious pencil, which is either whitish or the color of the tufts of the body, 



