;H94 



FSVCHE. 



[September, igoz 



GROUP CHARACTERISTICS OF SOME NORTH AMERICAN BUT- 

 TERFLIES — III. 



BY SAMUEL H. SCUDDER, CAMBRIDGE, MASS. 



Tasitia Moore. 



Chrysalis: Slenderer in the thoracic 

 region than in Anosia with stouter and 

 more prominent ocellar tubercles, and 

 with the semicircles of raised points on 

 third abdominal segment oblique when 

 pendent. 



T. berenice Cram. {Pap. gilippus Sm.- 

 Abb.). Butterfly : Wings dark reddish choco- 

 late on both surfaces broadly bordered with 

 blackish, the veins darker especially beneath 

 where they are often narrowly edged with 

 white or, above, with steel gray; the black 

 border more or less dotted with white and on 

 the fore wings followed within by a row of 

 white spots, besides which two parallel 

 oblique rows of white spots cross the apical 

 half of the wing, the inner just outside the 

 cell, and similar spots are found in the mid- 

 dle of the median interspaces of the same 

 wings. Expanse of wings So mm. Egg: 

 Unknown. Caterpillar at birth: Unknown. 

 Mature caterpillar: Whitish violet witli 

 transverse deeper lines, and next the anterior 

 margins of the segments a transverse reddish 

 brown band enclosing a narrow yellow stripe ; 

 filaments brown purple. Length 55 mm. 

 Feeds on Asclef>ias atnplexicaulis,A. obtusifo- 

 lia, GoHolobus /lirsutus. Chrysalis: Deli- 

 cate green, the raised points golden, those of 

 the tliird abdominal segment black on the 

 anterior face set in a blue band. Length 22 

 mm. — Southernmost United States, as far 

 west as New Mexico and Arizona. 



T. strigosa Bates. Butterfly : Differs from 

 the preceding, of which it may be only a 

 geographical race, principally in the slightly 

 lii;hter ground color and the considerably 



larger size of the round white spots crossing 

 the apical half of tlie fore wing, not including 

 those upon or next the marginal black band ; 

 the black veins of the under side of the hind 

 wings are also more widely margined with a 

 white flecking. Expanse of wings 70 mm. 

 Early stages unknown. — Texas. 



Tribe Ithomyini. 



Butterfly : Males provided in most 

 (all?) genera with an erect row of 

 odoriferous hairs along the subcostal 

 nervure of the hind wings, but no 

 pockets or patches of androconia. 

 Females with relatively long and not 

 enlarged fore tarsi. Egg'- (Not known 

 sufficiently to distinguish them from 

 Limnaini.) Cati.rpiUar at birth : The 

 body segments provided with no other 

 elevations than those on which the 

 ranged bristles are seated. Mature cat- 

 erpillar: Body furnished with fleshy 

 short and stout appendages and also 

 with small papillae ; markings transverse 

 and longitudinal. Feeds on Solanaceae. 

 Chrysalis : Not dorsally tumid on abdo- 

 men, the mesothorax unusually promi- 

 nent. 



Synopsis of the genera. 



I. Dynothea. Butterfly: Last joint 

 of palpi minute. Fore wings opaque, 

 less than twice as long as broad. Egg : 

 Unknown. Caterpillar at birth: Ranged 

 appendages short, slightly bent, con- 

 tinuing into the second stage. Mature 



