*>• 4 Baker: Malayan Jassoidea 377 



the very small first apieal cell, the very long, narrow, and 

 similar second and third apicals, and the very large fourth 

 apical cell ; subcostal area with some light cross veins on distal 

 half, which are distinct only by transmitted light. Subgenital 

 plate of female with a small semicircular emargination behind. 



Straits Settlements, Singapore (Baker) . Common. Judg- 

 ing from the published description and figure, this is very 

 distinct from B. granulosus Distant of Ceylon. A larger form 

 (length, 7.5 millimeters) of this species occurs at Sandakan, 

 British North Borneo, and this is here designated var. borneensis. 



These insects may be covered with white waxy powder, which 

 readily rubs off. 



Genus STENOTORTOR novum 



Type, Stenotortor inocarpi sp. nov. 



Characters as given in the generic synopsis. This genus 

 represents a more highly specialized Balbillus. While the life 

 habits of Balbillus are not known, it is to be presumed, from 

 the greatly flattened face, very short proboscis, and more or less 

 tectiform tegmina, that in a state of rest on the leaf the body 

 is strongly appressed to the leaf surface, as in Stenotortor. 

 Some of the striking structural modifications of both genera are 

 correlated with this curious habit. 



rtor inocarpi sp. nov. Plate 3, fig. 22. 



Pale brick red throughout, the face paler, the vertex and 

 pronotum inclining to ochraceous. A broad fuscous-clouded band 

 extends from basal margin of clavus to two-thirds its length on 

 inner half, a short median fuscous spot in radial area, and a 

 fuscous band occupying most of medial area and extended later- 

 ally to claval suture ; base of third apical cell clouded with fuscous. 

 Length, female, 5 millimeters; male, 4.75. 



Differs from Balbillus albellus in structure as follows: Face 

 a little wider than long, eye a little wider than temple in facial 

 view (Plate 3, fig. 22, c) . The antenna-, although close up under 

 border of crown, yet possess a short, distinct, separated supra- 

 antennal carina, which is lacking in B. albellus. The apical 

 border carina of the true vertex is as strong as the border carina 

 of crown and connects with the lateral carinas before ocelli (Plate 

 3, fig. 22, a), the latter a little farther removed from lateral 

 carinas; anterior half of vertex distinctly depressed, posterior 

 half plane ; median carina distinct throughout, stronger apically. 



