MNASICLES.— CALLIMOEMUS. 603 



2. Mnasicles hicetaon, sp. n. (Tab. cm. fig. 27, e .) 



Alis fuscis, stigmate concolore :. subtus pallidioribus, anticis area mediana obscuriore, costa et apice 

 anticarum late, posticisque omnino, squamis ochraeeis sparsim tectis; palpis et corpore subtus pilis 

 griseis vestitis. 



$ ignota. 



Hah. Mexico, Ciudad in Durango (Forrer), Vera Cruz {F. J). G.). 



We have placed three male insects under this name, the one from Durango being 

 in very bad condition. 



M. hicetaon may readily be known from M. geta by the different coloration of the 

 underside of the secondaries, as well as by the absence of the fringe of long hairs 

 on the upperside of these wings in this sex. For the genitalia of the male, see 

 Tab. CIII. fig. 27. 



CALLIMORMUS. 



Callimormus, Scudder, Rep. Peabody Ac. Sci. iv. p. 74 (1872) ; Proc. Am. Ac. Sci. x. p. 131. 



The type of this genus is C. juventus, Scudd., from Panama, the original specimen 

 of which, a female, we have examined. Ancyloxypha gracilis and A. corades, Feld., and 

 Apaustus jilata, Plotz, also belong here, as well as some other Tropical- American 

 forms. The species are all of small size, with very long, slender, erect, terminal joint 

 to the palpi, long antennae, with a long crook, and narrow primaries, which in the 

 male have a brand formed of two longitudinal streaks. 



The antenna? are half or more than half the length of the costa, and have an 

 elongate club, terminating in a long crook. The third joint of the palpi is very long, 

 slender, erect, and pointed. The primaries are narrow, blunt at the tip ; the cell is 

 less than two-thirds the length of the costa ; the discocellulars are oblique, the upper 

 one a little longer than the lower ; the lower radial is depressed at the base ; the first 

 branch arises about the middle of the median nervure, the second immediately before 

 the lower angle of the cell, the third median segment thus being extremely short. 

 The secondaries are rounded at the anal angle ; the cell is broad, and half the length 

 of the wing ; the discocellulars are transverse and very faint. The body is slender. 

 The middle tibiae with (C. corades) or without (C. juventus) spines, the hind tibiae with 

 two pairs of spurs. The primaries of the male have a brand formed of two streaks, 

 one extending along the whole length of the second median segment (C. juventus, 

 Tab. CIII. fig. 30), sometimes ^-shaped (C. corades, C. gracilis, and C. omadius), the 

 other just below the first submedian branch at the base. 



Callimormus may easily be distinguished from Ancyloxypha by the very different 

 neuration of the primaries, as well as by the presence of a brand in the male, the form 

 of the antennae, &c. The terminal joint of the palpi is longer and more slender than 

 in Epeus and Methionopsis. 



