44 PROCEEDINGS OF THE ACADEMY OF [Feb., 



General coloration apparently pale green in life (the head, pro- 

 notum and caudal limbs have faded to yellowish brown). Pro- 

 notum with a pair of delicate lines, formed by a succession of blackish 

 brown dots, margining the medio-longitudinal carina of the shaft, 

 with more extensive blackish brown maculations forming a dis- 

 tinctive pattern on supra-coxal expansion and neck (see Plate I, 

 figure 11). Cephalic coxae with ventral surface narrowly bordered 

 for a brief distance distad along internal margin with blackish brown 

 and with a fleck of the same color meso-distad. Body and limbs 

 elsewhere entirely immaculate. Tegmina and wings^' heavily milky, 

 so that when at rest they are actually transparent only distad, in 

 other portions almost opaque; veinlets pale green; marginal fields 

 distad, in portion between marginal and mediastine veins, opaque, 

 milky. 



Length of body 35, length of pronotum 12.2, greatest width of 

 pronotum 2.2, least width of pronotal shaft 1.7, length of tegmen 

 23, width of tegminal marginal field 1.6, length of cephalic femur 

 8.1, length of caudal femur 9, length of caudal metatarsus 2.4 mm. 



The type of this striking species is unique. 



AETAELLA« new genus. 



The present genus is very closely related to Leptomantis Giglio- 

 Tos.^'* We find these genera to agree closely, except in characters 

 of the armament of the cephalic femora and tibiae. In both genera 

 the spines of these margins are strongly developed, the number 

 and proportions constant ;^^ for the cephalic femora the discoidal 

 spines are four in number, of which the first two are rather closely 

 placed and nearly opposite each other transversely on the ventral 

 surface, the first being on the internal margin just before the un- 

 guicular sulcus; the ventro-external margin with four elongate 

 spines and all genicular lobes with a minute but elongate spine. 



Genus monotypic. Genotype. — Aetaella bakeri here described. 



3' The form of the tegmina and wings when at rest, with apices of the latter 

 considerably surpassing those of the former, and the distal, marginal, more strongly 

 colored areas along the costal margin, gives the species before us of the genera 

 Xanthomantis, Polyacanthopus, Leptomantis and Aetaella a distinctive and rather 

 similar general facies, suggesting that shown by species of the Neuropteroid 

 genus Mantispa. 



'* From Aeta+ella. The Aetas, or Negritos, are the aborigines of the PhiU 

 ippines. 



3' Bull. Soc. Ent. Italiana, XLVI, p. 87, (1915). 



" Except for the smallest distal spines of the ventro-internal margin of the 

 cephalic femora, which in Aetaella individually vary from three to five. 



