( 109 ) 



Ceratoiniii calalpae. Smith, Trans. Aiiin: Eiit. Soc. xv. p. 205. t. 10. f. 9. 10 (genit.) (1S88) (Florida 

 to Virginia, Mississippi, Indiana) ; Jones, Eiil. News x. p. 43 (1899) (Delaware, spreading 

 northward?) ; Laur., ihid. x. p. 190 (1899) (Delaware, abund. of pupa); id., l.r. xi. p. 608 

 (1900) (spreading northw.). 



(? ? . First segment of foretarsns a little longer than second ; long terminal 

 spnr of hindtiliiae less than two-thirds the lengtli of the first tarsal segment. 

 Markings in basal half of forewing less distinct than in undulosa, stigma smaller, 

 bauds on underside of hindwing less marked, the enter one not dentate ; collar not 

 edged yellow ImfF, brown lateral jtatches of abdomen smaller. The fringe-spots are 

 variable in size. 



(?. Tenth abdominal segment not quite sj'mmetrical — the asymmetry is not 

 conspicnous, — tergite less dilated vertically before endt han in tnidtilosa ; sternite 

 shorter, the lobe broader than long, sinuate, the right half truncate, the left 

 ronnded. Clasper small, narrow, broadest jnst before end ; harpe short, broad, 

 almost oblong, somewhat narrowing to end, sinuate at apex, the ventral lobe shorter 

 than the upper one, upper margin slanting, dentate (PI. XL. f. 1). Penis-sheath 

 with a very long, conical, horizontally curved, apical tooth (PI. XXIX. f 2. 3). 



?. Vaginal plate resembling that of Isogrammn liaijeni, but the ridge covering 

 the vaginal cavity thicker and less distinctly sinuate. 



Southern specimens seem to be duller in colour and less distinctly marked 

 than northern ones, and have on the metanotum an obvious yellowish sjiot, which 

 is much paler in northern examples. 



Larva pale green, black above, with pale green dorso-lateral stripe, which is 

 interrupted, ringlets and joints also partly pale green ; head black ; horn thin, 

 black. — Food-plant : Catalpa. 



Pupa slender, glossy, not strongly sculptured. 



Hah. Southern district of Atlantic Snbregion : Florida to Delaware, westward 

 to Mississippi and Pennsylvania. 



In the Triug Museum a number of larvae and pupae, and 9 c?(?, 13 ¥ ? from : 

 Florida ; Virginia ; Pennsylvania. 



XXVin. ISOPARCE gen. nov.— Typus : cupressi. 



S/Jiitu, Boisduval («.,/< Linnii, 1758), Sj>ec. Gen. Lep. Hit. i. p. 102 (1875). 

 llylokm, Grote («.>« Hubner, 1822), Bull Buffalo Soc. N. Sc. iii. p. 225 (1877). 



S- Tongue oi'/y short and weak, scarcely reaching midcoxae. Paljius small, 

 rough-haired. Tiljiae not spiny ; first segment of foretarsns short, somewhat longer 

 tliaii second, not obviously longer than fifth, with several stout spines externally, 

 :ipical one prolonged, segments 2 to 4 also with one prolonged externo-apical 

 >pine ; liindtibia shorter than first tarsal segment ; spurs very long, long terminal 

 one of the length of tjie first tarsal segment ; no comb to midtarsus ; no pulvillus, 

 paroMychiura n-ithont lobes. R- of hindwing before centre of cell, SC and R' on 

 a long stalk. 



i. Tenth abiloniinal tergite slender, curved, carinate above, ajjex obtuse in 

 dorsal, acute in laleriil, view ; sternite (PI. XXVIU. f (i) broad, triangular, obtuse, 

 niniiate, convex below. Clasijer short and broad, subdorsal fold heavy, with long 

 briHtleH ; harpe (PI. XL. f. 4) consisting of an upper, truncate, dentate, concave 



