MEMOIRS OF THE ^"ATIOXAL ACADEMY OF SCIENCES. 



243 



In var. hrunncu the fore wings aie suffused with reddish brown, and there is a distinct reddish 

 brown iiatcli beyond the discal mark, with less white iu the usually white oblique subapical pat(;h. 



In var. trouvelotii, a large female expanding 5.'>mm., there is an olive tinge to the fore winos 

 but within the inner line are three brown ])atches, while the middle of the wing is clear olive-gray 

 beyoud the discal mark the wing is tawny-brown. It is near the normal 77. ohliqua, but much 

 larger, and olive-gray instead of brownish gray, rendering the markings more distinct; the hind 

 wings are smoky gray. 



in 



II 



Fig. 85. — Early stages of Ht'tervcajnpa obli<iua and II, ffttttivitta. — I. llcteritcainpa ohli'iua. Freshly halcbt'dlarviv ; la. dorsal view; 

 7&. spine on third; /c. spine on eighth ; 7rf, .sjiine on ninth abdominal segment; /f, i)rothoracic horns of stage 1. enlarged. II. Seterocampa 

 ohti'jita. Stage II; Ila, horns on first prothoracic .segment. III. Beterocampa tjiUtivitta. Horns in stage I; a, protboracic horn; h.ono 

 on second abdominal, e. one on third to fifth, and (?, on ninth abdominal segment. (Theset.X' arem some cases in /and /a by oversight omitted.) 



The type was from Medford, Mass., and was collected July 10 by Mr. L. Trouvelot. and is now 

 iu the Museum of Comparative Zoology, Cambridge, Mass., where is also the tyiie of 77. obliqiia, 

 normal form. 



The eggs of this Heterocampa were received from Trovidence. through the kindness of Mr. 

 W. Dearden, July 13, and hatched at Brunswick, Me., July L'0--'I. It feeds on the oak. 



