SHELFORD. BLATTOdEA. 17 



Fam. Phj llodromiidte. 



Gen. Iscliiioptera Burm. 



The Ea-st African species can readily be distinguished from species of Phyllo- 

 dromina, not only by the wing venation but also by the longitudinal, instead of oblique, 

 discoidal sectors of the tegmina and by the asymmetry of the sub-genital lamina and 

 styles in the male sex. The following table will assist in the determination of the 

 known species: 



1. Testaceous or rufo- testaceous species. 



2. Scent-glands of c? opening at base of supra-anal lamina, which 



is not much produced himaculala Gerst. 



2'. Scent-glands of /, not as above, supra-anal lamina produced strUjosa Schaum. 

 r. Rufo-castaneous or rufo-fulvous species. 



2. Small neufra Sauss. 



2'. Larger incnriosa Sauss. 



/. strigosa Schaum. is recorded from Mosambique, it cannot be recognized with 

 certainty. /. neutra Sauss. from Africa meridionalis* is described from a female 

 only and appears to differ in size only from /. incnriosa Sattss. 



Isehnoptera biiiiaoulata Gerst. 



(PI. 3, tiKS. 10 & lo.) 



Phyllodromia bimaculata Gerstaecker, Arch. Naturg. XXXV, p. 206 (1869); 

 Von del- Decken, Reisen in O.^^t-Afrika III (2) p. 4 (187.3). 



Gerstaecker's description does not include an account of the wing structure 

 in this species; the venation is somewhat variable but at least two branches of the 

 ulnar vein fail to reach the outer margin of the wing and are directed towards the 

 dividing vein. On account of this character the species must be placed in the genus 

 Isehnoptera. The 8"' abdominal tergite in the male is completely hidden beneath 

 the 7'^^ tergite, the 9"' tergite is also invisible and the base of the supra-anal lamina 

 is depressed forming a cavity fringed with hairs, the scent glands open on the sides 

 of two chitinous tubercles in this cavity. The sub-genital lamina is very irregular 

 and notched on the left side, a style being situated in the notch, the right style is 

 stouter and spinose, the apex of the lamina forms a hirsute lobe. Ootheca as in 

 Phyllodromia germanica L. 



Kilimandjaro: Kibonoto, lower slopes and 1.300—1900 metres, under dead 

 leaves in banana plantations. 21 J'c?, 25 ?$. The species was originally recorded 

 from Lake Jipe at Kilimandjaro (von der Decken). 



Var. sobrina nov. 

 cT and &. Castaneous, margins of pronotum hyaline its disc castaneous. Wings 

 with veins fuscous. 



SjoatedtK KiUmandjaro-Merii Expedition- li. ^ 



