298 ENTOMOLOGICAL NEWS [July, '13 



A single female specimen I owe to the kindness of my 

 friend, Mr. S. Kawai. This specimen was captured by one 

 of his friends at Banshoryo, Formosa, at the end of Septem- 

 ber last year. 



This species is allied to Hagen's A. japonica, but it differs 

 in many respects, especially in the color of the ventral side of 

 the abdomen. 



Formicaleo esakii n. sp. 



Blackish. Face and palpi yellow, the last joint of labial palpi ochra- 

 ceous. Antennae fuscous black, anterior margin of most of the 

 joints narrowly yellowish, basal joint yellow with a narrow fuscous 

 ring in the middle. Vertex black and swollen, with a few yellowish 

 brown spots on the hind margin. 



Prothorax longer than broad, little narrower in front, with a trans- 

 verse impression anteriorly and broad concave space posteriorly ; both 

 anterior corners yellowish brown, and from this spot a narrow longi- 

 tudinal line runs toward the hind margin ; median brown line scarcely 

 seen in front. Meso- and metathorax dull black ; on the meso-thorax 

 there is a yellow spot before the base of the fore-wing; lateral surfaces 

 irregularly ochraceous. 



Abdomen black ; the third segment with two yellowish bands, one 

 anterior and another along the posterior margin ; the fourth and fifth 

 segments with a yellowish band near the anterior margin ; a large yel- 

 low spot exists on the sixth segment and also a small one near the 

 posterior margin along both sides ; anterior half of seventh segment 

 yellow, posterior sides also yellow. A few of terminal segments are 

 yellowish in ventral side. Genital parts are quite imperfect in my 

 specimen ; additional segments mostly yellow. 



Fore-leg dark; outer side of coxae black, but inner side pale yellow; 

 femora yellowish, outer side a little ochraceous and extremity black; 

 tibia also yellowish with three broad black or ochraceous rings ; spurs 

 ochraceous, long and curved. Middle-leg yellowish ; tibia with a longi- 

 tudinal narrow blackish line and two broad, black rings. Hind-leg also 

 yellowish ; femora with many strong black spines, not hairs only ; tibia 

 with two broad black rings, one near the base and another in the ex- 

 tremity. Tarsal joints of all the legs yellowish except the last joint 

 black in each leg; claws all testaceous and curved. 



Wings elongated ; hind-wing much shorter and more acute than 

 fore-wing; vitreous with a fuscous spot near the termination of the 

 cubital vein in the fore-wing. Neuration mostly black, interrupted 

 with yellow or milky white ; costal transversals mostly black, but pale 

 near the base of the wings. Some small light fuscous spots, four of 

 them in a row, exist near the apex of fore-wing as well as of hind- 



