124 THE ENTOMOLOGIST. 



Holotype : $ , Horisha, Formosa, July 20th, 1919 (K. Asakura)_ 

 Type in the collection of the author. 



Very close to E. libythea, Fab., but far larger in size, and lacks 

 the orange border to the fore wing underside. 



Zizera sylvia, n. sp. (Lycsenidae). 



Male. — Wings, upperside, violet-blue, darker and less purplish 

 than in maha ; costal margin of fore wing without whitish scales,, 

 outer margin broadly bordered with black, with a trace of a short 

 whitish streak at hind angle. Hind wing similarly marked, but the- 

 black border narrower, and with a row of four or five obscure black 

 spots along outer margin. Fringes white. Underside grey, not 

 huffish as in maha ; fore wing with three rows of black spots along 

 outer margin ; internal row consists of five round spots, each encircled 

 with white, and a less distinct bar at the bottom of the row ; median 

 (sub marginal) row with six very much larger spots ; external (mar- 

 ginal) row rudimental, disappearing toward hind angle ; a prominent 

 black bar at the end of discal cell ; no black spots in the middle of 

 discal cell, or near the base of the wing. Hind wing with five 

 series of black spots ; basal series with two or often three spots ; 

 costo-discal series three spots, including the bar at the end of discal 

 cell ; limbal series with six spots, extending from the first to sixth 

 interspaces ; submarginal series most conspicuous, consisting of 

 eight very heavy spots ; marginal series indistinct, often hardly 

 recognisable ; all the spots more or less distinctly encircled with 

 white. Fringes white, regularly interrupted by grey. 



Female. — Wings ; upperside fuscous black with a trace of blue: 

 near the base ; underside same as in the male. 



Length of body 5 to f in. ; expanse of wings -J to A-f in. 



Holotype : cf ,Kusakimura, Province of Harima, Japan, July 

 7th, 1920 (S. Iguchi). Allotopotype : ?. Paratopotype : 2 c?'s 

 and ? . Types in the collection of the author. 



Eesembles the summer brood of Z. maha, Koll., but smaller, 

 and has narrower wings- It can be most readily told from maha 

 by the markings on the hind wing underside. In maha the black 

 spot in the seventh interspace is so situated as to connect the 

 spot in the eighth interspace to the limbal series (as in most 

 Lycaenas) : whereas in sylvia the corresponding spot is located 

 right behind the spot of the eighth interspace, separating that 

 spot from the limbal series (as in Cyaniris argiolus, L., etc.). In 

 this respect this species is more like Z. labradus, Godt., from 

 which, as well as from maha, differing conspicuously by the sub- 

 marginal series of black spots on the underside being much, 

 heavier than the marginal series. 

 11, West Sixty-Eighth Street, 

 New York City ; 

 . February 5th, 1922. 



