Vol. XXlv] ENTOMOLOGICAL NEWS 297 



On Three new Species of Myrmeleonidae from Japan 

 and Formosa (Neur. Planip.). 



By WARO NAKAHARA, Tokyo, Japan. 



On studying my collection of Myrmeleonidae, I have dis- 

 covered a number of specimens from Japan and Formosa 

 which seem to represent three new species, and so I propose 

 to describe them in the present paper. 



Acanthaclisis kawaii n. sp. 



Fuscous with gray villosity. Face yellowish-white, palpi and base of 

 antennae yellow; antennae short, stout and black; maxillary palpi yel- 

 low, slender and cylindrical ; labial palpi nearly ochraceous, especially 

 the last joint, and very long; vertex fuscous black with two elevations, 

 separated by a middle impression, anteriorly with an ochraceous band. 



Prothorax quadrangular with two transverse impressions, front mar- 

 gin about straight but slightly impressed in the middle, fuscous black 

 with seven irregular grayish longitudinal lines above, under side whit- 

 ish yellow ; a small depression exists near the mesothorax ; above 

 clothed with black hairs, but underside with long, white ones. Meso- 

 and metathorax also fuscous-black, with some reddish-yellow spots 

 above, metathorax and the underside of both segments clothed with 

 very long and silvery white hairs. 



Abdomen deep grayish-black, hind margins of last four segments 

 brown, the first one of them with a yellowish-brown spot on each pos- 

 terior corner; underside yellow, basal half of segments mostly dark 

 yellow, and a few basal segments clothed with long white hairs. In 

 the female, the last segment short, split below, near the ventral mar- 

 gin with one long shining cylindrical appendage with black hairs ; ad- 

 ditional short segments with black hairs and spines, consist two plates. 



Fore-leg black with very long white hairs ; coxae and basal part of 

 femora light ochraceous ; femora mostly black ; tibia black with some 

 brownish spots and a long testaceous spur; claws testaceous. Middle- 

 leg nearly as in the fore-leg, but the brownish spots of tibia are more 

 yellowish and much larger. Hind-leg pale, with few hairs ; coxae and 

 femora light brown; the inner side of tibia black, but the outer side 

 whitish. 



Wings semi-vitreous, neuration yellow, strongly streaked and 

 spotted with black. In the fore-wing the costal area is occupied by two 

 regular rows of pentagonal cellules, those of the upper row slightly 

 smaller than those of the lower; pterostigma milk-white, and not 

 marked with any color. 



Length of body, 40 mm.; fore-wing, 53 mm.; hind-wing, 47 mm.; 

 antennae, 9 mm. 



