76 Mr. W. L. Distant on 



evolution of structure is often to some degree independent 

 of that of the complete organism. 



Unfortunately the lantern was destroyed before the interest 

 of the specimen was appreciated. 



The specimen is now in the Zoological Museum of 

 University College, Reading (registered no. 535). 



XL — Descriptions of new Species belonging to the Homo- 

 pterous Family Cicadidte. By W. L. Distant. 



Ioba bequaerti, sp. n. 



Head, pronotum, and mesonotum olivaceous ; head with 

 the area of the ocelli connected with the lateral margins by 

 an oblique fascia, and a spot at anterior angles before front 

 black; pronotum with two central spots (one on anterior 

 margin, the other on inner edge of broad posterior margin), 

 the fissures, and a basal spot to the lateral angulated ex- 

 pansions ; mesonotum with two small obconical spots on 

 anterior margin, and a central elongate spot black ; abdomen 

 above testaceous, first and second segments almost entirely 

 and basal margins of remaining segments piceous ; body 

 beneath more or less olivaceous ; a large transverse spot 

 connecting face with eyes, apex of face, clypeus, about apical 

 half of rostrum, tarsi, and central transverse segmental spots 

 to abdomen black ; tegmina semiopaque, talc-like, base to a 

 little beyond basal cell fuscous, thence to about basal third 

 greyish opaque, the veins brownish ochraceous or violaceous, 

 transverse veins at bases of apical areas and a double series 

 of small spots near apices of apical veins fuscous, a trans- 

 verse fuscous spot at apex of and beyond radial area, the 

 costal membrane more or less virescent; wings palely 

 greyishly opaque, the basal and apical areas fuscous, the 

 veins greyish, the membrane pale hyaline ; head f rontally 

 produced, not truncate, above about as long as pronotum 

 (excluding its posterior margin), longitudinally impressed on 

 the area of the ocelli, prominently pilose before front and 

 behind eyes ; pronotum with its lateral margins medially 

 angularly expanded, the angular apices reaching nearly to 

 the apices of basal cells of tegmina ; rostrum reaching the 

 posterior coxae ; opercula slightly overlapping internally, not 

 extending beyond base of abdomen ; posterior tibiae longly 

 spinulose. 



