yi) [September, 



reason that they fly chiefly at night. Mr. Bold has recorded in this 

 Magazine the capture of Cnllicorixa JVoUastoni at light, and I have 

 taken several Ourixw in the same manner. Notonecta, on the other 

 hand, flies readily in the hot sunshine, and may sometimes be seen far 

 from water. 



All the species hibernate in the perfect state (differing in this 

 respect from Sigara, which passes the winter as a larva), and, after 

 pairing in spring or early summer, die before the larva? attain any 

 size. The perfect state is attained towards the end of summer or in 

 autumn, the time differing according to the altitude at which the 

 species are found. 

 Perth : June, 1873. 



ON CERTAIN BEITISH HEMIPTEEA-BOMOPTERA. 



BY JOHN SCOTT. 



Revision of the Bythoscopid^, and descriptions of some species not hitheriu 

 recorded as British. 



(continued from page 22). 



Species 7. — Idiocerus tulgidus. Fab. 

 Cicada fulgida, Fab., Eut. Syst., 44, 73. 

 Idiocerus ochrolevcus and Miiilci, Kirschb., Cicad., 163, 22 and 23. 



? yellow, shining. Scutcllum with a black, trinngiilar spot 

 near each basal angle ; claims with a white blotch around the apex of 

 the central nerve ; coriiim without a transverse band. 



Head : crown pale yellow in front, with a small brown spot near each eje. Face 

 and cli/peus pale yellow. 



Thorax : pronottim pale brownish-yellow, slightly darker across the middle. Sciitelhim 

 clear yellow, with a black triangular spot near each basal angle. Elytra yellow. 

 Claviis — nerves fine, delicately punctured on each side ; central nerve at the 

 apex white, around which is a somewhat oval wiltte blotch ; inner margin 

 narrowly brown, between the central nerve and the apex of the scutellum pale. 

 Corium yellow ; the colour becoming paler towards and at the anterior margin ; 

 nerves fine, whitish, delicately punctured on each side. Ilembrane — inner 

 marginal nerve to round the apex, and the apex of two or three of the cell 

 nerves, brown. Stermim yellow. Eegs yellow ; claws pitchy-black. 



Ahdomen above, yellow, with a broad black streak down the centre ; posterior mar- 

 gin of the segments yellow ; beneath yellow ; last genital segment above black, 

 beneath yellow. Length, 2^ lines. 



I have drawn up this description from a single $ in the Banksian 

 collection, now in the possession of the British Museum, but it so 

 closely resembles the ? of /. j^ojndi, that I have some doubts as to 

 its bciny really a distinct species, until 1 have seen and examined a c? . 



