140 Bulletin American Museum of Natural Hidory [Vol. XLIII 



The fringes are obscureh' checkered at the ends of the nervules by darker scales, 

 contrasting with tlie pale mouse-gray color of the rest of the fringes. On the under 

 side the markings recall those of M. safitza, but the ground-color is darker. Expanse, 

 37 mm. (The expanse of the smallest specimen of M. safit;ra before the writer — there 

 are many scores of them — is 45 mm.) 



Type from Medje; paratypes, from Faradje. Type and two paratypes in The 

 American Museum of Natural Histor}', New York; two paratypes in the Holland 

 Collection in the Carnegie Museum. 



This may prove to be a local or seasonal form of M. safitza, but it 

 differs so markedly from all the varieties of that species known to the 

 writer that he does not hesitate to describe it as new. The entire absence 

 of any trace of ocelli on the upper side of the wings, the black velvety 

 color of the central area of the fore wings, the checkered fringes, and the 

 uniformly small size of the specimens, all indicate that we are dealing 

 with what is at all events a marked variety, separable at a glance from 

 M. safitza and all the varieties of that species hitherto described. 



I have the honor of naming the species after Mr. Herbert Lang, the 

 capable head of the Expedition, to whose enthusiasm we are indebted 

 for the large entomological collections which were returned. 



(97) 24. Mycalesis chapini, new species 



Plate VII, Figure 9, cf 



d'. On the upper side having a general resemblance to the male of M. langi 

 Holland, but considerably larger in size, and having the fringes of the wings more 

 decidedly checkered with dark at the ends of the nervules. On the under side wholly 

 different from M. langi and in the disposition of the markings, but not their color, 

 recalling the under side of M. haumanni Karsch. The ground-color of the under 

 side is pale sienna sprinkled with minute dark transverse lines and dots, the basal 

 half of both wings and the limbal area of the primaries near the outer angle broadly 

 clouded with purplish brown. A sub-basal and median transverse line, curving 

 outwardly from the costa of the fore wing to the inner margin of the hind wing about 

 its middle, run approximately parallel to each other. The median line is produced 

 somewhat sharply at the origin of vein 4 on each wing, and is more or less waved on 

 the interspaces, the curves bending outwardly. The space between the sub-basal 

 and median lines is a trifle darker than the rest of the wings, partly due to the increase 

 in this field of the minute strigulse with which the wings are strewn. The ocelli are, 

 for the most part, entirely obsolete, at most being represented by minute white dots, 

 except the two nearest the anal angle of the secondaries, which in the type are exceed- 

 ingly minute black circles, under the glass seen to be pupilled with white and ringed 

 about with pale ochreous. Expanse, 42 mm. 



Niangara. Type unique, in The American Museum of Natural History. 



This insect is so totally unlike any other in the group to which it 

 belongs that I do not hesitate to describe it as new. I take pleasure in 

 naming it in honor of Mr. J. P. Chapin, one of the leaders of the Expe- 

 dition. 



