MEMOIRS OF THE IN^ATIONAL ACADEMY OF SCIEXCES. 



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111 var. Iiruniu'it the fore wings are suflused with reddish brown, and there is a distinct reddish 

 brown patch beyond tiie discal mark, with less white in the nsuallywhite oblique snbapical patch. 



lu var. trouvelotii, a large female expanding d-jmm., there is an olive tinge to the fore wings, 

 but within the inner line are three brown patches, while the middle of the wing is clear olive-gray; 

 beyond the discal mark the wing is tawny-brown. It is near the normal H. obliqna, but much 

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

 wings are smoky gray. 



Fig. 85.— Early stages of Hcterocampa oblirjtta ami H. guttii-itta.—l. Hcterocampa oblitjna. Freshly hatclied larvip ; la, dorsal view; 

 ib.apiue on third; 7c. spine on eighth ; irf, ai>ine on ninth abdominal segment; /e, prothoracic horns of stage I, enlarged. II. Seterocampa 

 obliijua. stage II; lla. boms on first ]>rothoracic segment. III. Hcterocampa gttttivitta. Horns in stage I; a. prothoracic horn ; fc, one 

 on seeoud;ilnlomjnal. cone on third to fifth, and rf. on ninth abdominal segment. (The setie are in some cases in /anu7« by oversight omitted.) 



The type was from Medford, Mass., and was collected duly 19 by Mr. L. Trouvelot, and is now 

 in the Museum of Comparative Zoology, Cambridge, Mass., where is also the type of H. ohliqiia, 

 normal form. 



The eggs of this Hcterocampa were received from Providence, through the kindness of Mr. 

 W. Dearden, July 13, and hatched at Brunswick, Me., July :i0-21. It feeds on the oak. 



