1922] NATURAL SCIENCES OF PHILADELPHIA 219 



Dohrn, described from Minahassa, Celebes. That species is de- 

 scribed as being decidedly larger, with very different male genitalia. 

 Type: cf ; Mount Apo, Mindanao, Philippine Islands. June and 

 July. (E. A. Mearns.) [United States National Museum.] 



Size small, form normal for the genus. Fastigium of vertex 

 produced in a straight, very slenderly conical projection, its narrow 

 apex truncate. Face as in A. major here described. Tegmina 

 much reduced, total length probably near that of pronotum, nar- 

 rowing an$ rounding into the truncate apices; stridulating field in 

 normal position wholly concealed by pronotum. Ultimate tergite 

 with caudal margin weakly and triangularly bilobate produced 

 caudad. Supra-anal plate vertical and tucked in between cerci, 

 apparently broadly rotundato-trigonal. Cerci very short and 

 heavy, dorsal surface flattened convex, disto-external angle sharply 

 rounded rectangulate, disto-internal angle produced in a stout, 

 decurved tooth. Subgenital plate flattened, lateral portions nar- 

 rowly reflexed, the lateral margins gradually descending to apex, 

 but in ventral aspect the sides appear parallel; distad strongly 

 W-emarginate, the narrow lateral apices thus formed bearing a 

 small socketed style disto-ventrad, above which they are ter- 

 minated in a tooth of equal size, curved dorsad; the median pro- 

 duced portion narrowly triangular and directed dorso-caudad. 

 Femoral genicular lobes as follows; cephalic internal acutely tri- 

 angular-produced, cephalic external and median external rounded, 

 triangularly-produced, median internal unispinose, caudal internal 

 and external bispinose. Ventral femoral margins armed, as follows. 

 Cephalic internal 5 and 6, cephalic external 5 and 5, median internal 

 2 and 3 (proximad), median external 6 and 6, caudal internal 1 and 

 1, caudal external 7 and 8. 



Head tawny, fastigium of vertex to base of clypeus forming an 

 elongate blackish brown, triangular marking; mandibles blackish 

 brown; remaining portions of clypeus ochraceous-buff, palpi paler; 

 labrum ochraceous-buff tinged with tawny. Antennae ochraceous- 

 tawny, the two proximal joints with flecks of dark brown, beyond 

 with intersections of joints slightly darkened. Pronotum tawny, 

 (paling laterad, cephalad and meso-caudad, possibly due to dis- 

 coloration of the specimen), small caudal area of lateral lobes above 

 humeral sinus with a suffusion of dark brown. Tegmina pale 

 ochraceous-tawny, veins of marginal field buffy, the minute intervals 

 between the veinlets dark brown. Abdomen clay color, each ter- 

 gite laterad with caudal margin sharply defined in a striking, though 

 narrow, vertical band of blackish chestnut brown, ultimate tergite 

 with a weak brown suffusion dorsad on each side. Limbs ochra- 

 ceous-tawny, with spines no darker, apices of caudal femora slightly 

 paler as are the median and caudal tibiae, the latter, however, 

 slightly darkened at apices. 



Length of body 22, length of pronotum 8.4, median depth of 

 lateral lobe of pronotum 2.9, median length of lateral lobe of 



