430 [November 



be there represented." I have recently heard from Mr. Grote as fol- 

 lows, which fully confirms that conjecture. 



'■' The figure of Ilalfsidofa t/'ssrUaria in the larval state, as given by 

 Abbott and Smith, represents the hairs, and so fiir as perceivable the 

 body, as of a dull, ochraceous brownish color. The dorsal tufts show a 

 superior dark brown shade and a blackish line. The lobes of the head 

 are bluish black ; the legs with a reddish shade. The four long ante- 

 rior pencils are blackish with a fiiint brownish tinge, and the two ter- 

 minal pencils are similarly colored. The larva is represented on Fagus 

 ferruginea [beech], and is stated also to be found on hornbeam and 

 plum trees." 



Hence it is, I think, very evident that tesaellaris Abb. Sm. is iden- 

 tical with my Antipho/a, and teasellaris Harris non Abb. Sm. a hith- 

 erto unnamed (Phytophagic) species, for which I propose the name of 

 Harrisii. The black and not rufous head, the black and not orange- 

 colored pencils, and the ochraceous brownish and not milk-white hair 

 of the larva of tessellan's Sm. Abb. seem to settle that point effectually. 

 Moreover that larva is not stated to feed on sycamore (Platanus occi- 

 dentalis), on which alone the tessdlaris of Harris is known to feed 

 according to Harris, Edwards, Lintner and myself, but on a variety of 

 other trees like my Antiphola. 



We can understand now, I think, why Dr. Harris described the larva 

 of his tessellariii as " yellowish or straw-colored," whereas it is in reality 

 milk-white. He evidently perceived the apparent identity of his te»- 

 sellaris (imago) with the tes^ellark (imago) of Abbott and Smith, and 

 very naturally supposing the larva; to be also identical, modified his 

 description of the larva so as to make it something intermediate be- 

 tween the two species. — Nov. 16, 1864. 



ERRATUM. 

 Page 414, lines 10 and 11, for ''white pencils" read •■ white pencils 



on the 2nd segment. 



