1920.] NATURAL SCIENCES OF PHILADELPHIA. 31 



(including the minute genicular spine), the cephalic tibiae ten ventro- 

 external spines; Giglio-Tos gives nine spines for the ventro-external 

 margin of the cephalic tibiae in his generic diagnosis. 



Amantis maculata (Shiraki). 



1911. Gonypeta maculata Shiraki, -^ Annot. Zool. Japonensis, VII, p. 'MS. 

 [d^, 9 ; Shizuoka, Japan; Taihoku and Taipin, Formosa.] 



Koonnaniu, Formosa, September 24, 1906, 1 9 . 



The present species is clearly a depauperate derivative from the 

 same stock as A. reticulata. In ynaculaia the cephalic tibiae have 

 the ventro-external margins armed with eleven spines. 



Amantis aeta-- new species. (Plate I, figure 7 and plate II, figure 9.) 



This species is one of the least distinctively marked forms of the 

 genus. Except for a dark brown suffusion distad on the ventral 

 surface of the cephalic femora, the body and limbs show no striking 

 markings, only in the female do less decided maculae of dark brown 

 occur as well ventro-distad on the internal faces of the cephalic 

 coxae and at the unguicular sulcus of the cephalic femora. 



The species furthermore apparently differs from all others in 

 having the tegmina and wings immaculate, clear hyaline in the 

 males; hyaline but very faintly tinged with yellowish brown in 

 the females, this much stronger in the marginal field of the teg- 

 mina and appearing distad as a succession of small flecks on the 

 costal margin of the wings, with stigma colorless in both sexes. 



Type. — cf ; Mount Banahao, Island of Luzon, Philippine Islands. 

 (From C. F. Baker.) [Hebard Collection Type No. 520.] 



Size slightly larger, form somewhat more slender, with tegmina 

 and wings more elongate than in the genotype, A. reticulata. Head 

 generally as in that species, with occiput lacking sulci and weakly 

 convex in transverse dorsal outline, differing from reticulata in 

 having the triangle formed by the ocelli slightly broader than high 

 and in having the facial scutellum broader, about three-fifths as 

 high as greatest width. Antennae ciliate. Pronotum very similar 

 to that of reticulata, but appreciably more slender, with narrowing 

 of supra-coxal expansion cephalad not as decided; medio-longi- 

 tudinally very weakly sulcate with a very feeble carina indicated 

 on shaft as in reticulata, supra-coxal expansion and transverse supra- 



^' We are unable to determine whether Shiraki's references are to actual pub- 

 lications. 



" Gonipeta maculata Shiraki, Matsumura, 1907, Ekichiu-Mokuroku. 



Gonipeta nawai Shiraki, 1908, Konchiusekai." 

 ^- The Aetas, or Negritos, are the aborigines of the Philippines. 



