1889.] W. Dcliei'ty — Notes on Assam Butterfl-ies. 



131 



and tlie other the female, of Euplcea midamus (liimcei). Both were 

 taken on the Dikrang near Sadiya. 



Family Hesperiadj:. 

 GeMota-group. 



(^p' TOTA, n. g. I separate Plesioneura sumitra, Icucocera and their 

 allies under this name. The typical Plenioneura, alysos, Moore (? =curvi- 

 fascia, Felder), is closely allied to Astictcpterns and Eerana. Like them 

 it lies quiet in shady places, flying only now and then, and slowly ; 

 alighting with closed wings. The egg, like that of Kerana, is of the 

 lowest type among butterflies. It is limpet-like, greatly flattened, red, 

 leathery, nearly smooth (the ribs are visible only near the base), with 

 a broad transparent basal carina. Snmitra is on the other hand one of the 

 swiftest and most active of insects, incessantly whirling around flowers, 

 or patrolling up and down a path, almost invisible from the rapidity 

 of its flight. Like its allies of tiie Tagiades group, it alights with open 

 wings. The egg is moi-e than three-fourths as high as wide, generally 

 white, with very numerous (three times a.<! many as in Tagiades), sharp- 

 ly cut ribs, and a greatly contracted base without carina. I postpone 

 a comparison of the structure of the imagines. 



Gehlota pinwii.li, Distant. One male, JIargherita, agreeing well 

 with Mr. Distaut's description and figure. The species resembles 

 hypsina and other GHliosias in colouring. It this is a case of mimicry 

 it lias its parallel in that of an Agaristn only two inches in expanse, 

 wliioh obviously mimics the great Bornean Hestias. The enemies of 

 butterflies seem not quite able to grasp the fact that they do not grow. 



SnastHs-(iroup. 



pLASTlNGrA MARGHEKITA, n. sp., PI. X, Pig. 5, cf . Mai.e, ahove black, 

 with liu-ht golden-oclireoiis trai slucent markings, and richer orange- 

 oohreouR opiiqne ones. Of the former there are on the forciving, two 

 unusually large, elongate-quadrate, subapical ones, separated by a vein, 

 the lower longest: one large oblique cellular one of hour-glass shape » 

 and three discal ones in echelon, of which one is very large, occupying 

 the entire breadth oF the lower median space, irregulaily pentagonal, 

 twice as Inns; lis hrind, separated fi'om the cell-spot only by the black 

 meilian vem ; tlie other two smaller, ehiipjate, broadest outwardly. Also 

 vviih tiie fdUiiwin,' npjiquc mnrkings : — one above the cell and one in the 

 1 iterno-mediau space, ex'endiii!)' ohliqueh- from the internal vein, not 

 far from the base, to the lower medinu vein, whicti separates it from the 

 basiil part of the laruer discal .'spot.. Rin lwiiKj with a large iri'egular 



