42 LIST OF HOMOPTEEOUS INSECTS. 



marked with black ; thiijbs and fore-shanks black ; claws black, 

 tawny at the base ; fore-thighs armed near the tips with two black 

 teeth, one of moderate size, the other extremely small : wings 

 slightly tinged with tawny, adorned with blue opaline lustre : fore 

 border black with a tawny vein beneath ; veins tawny, black towards 

 the tips ; first and second cross-veins and the space between them 

 and the fore border deeply clouded with dark brown ; a small brown 

 spot on the third cross-vein ; primitive areolet tawny ; fore-flaps 

 brownish tawny ; hind-flaps tawny at the base and along part of the 

 hind border, tinged with dark brown along the veins. Length of 

 the body 14 lines ; of the wings 39 lines, 

 a. Jamaica. From Mr. Gosse's collection. 



Genus 6. THOPHA. 



Thopha, Amyot et Serv. Hist. Nat. Hem. 471, 372. 



1. Thopha saccata. 



Thopha saccata, Amyot et Serv. Hist. Nat. Hem. 471, 1. 

 Tettigonia saccata, Fabr. Syst. Rhyn. 34, 9. 



Cicada saccata, Germ. Thon. Arch. ii. 2, 5, 57. Guer. Mag. 

 Zool. 80, pi. 238. 



a. New Holland. Presented by the Earl of Derby. 



b. New Holland. Presented by Dr. Sinclair. 

 c.—f. New Holland. 



2. Thopha perulata. 



Thopha perulata, Amyot et Serv. Hist. Nat. Hem. 471, 2. 



Cicada perulata, Guerin, Voy. aut. du Monde, 180, pi. 10, f. 5, 5 a. 



a — c. New Holland. 



3. Thopha varia, Mas. 



Nervus transversus lus fere rectus, obliquus, angulum valde oh- 

 tusum fingens, 2o ejus longitudine quadruplb divisiis ; 2us 

 subcurvus, obliquus, angulum valde obtusum fin gens, \o mul- 

 to longior; 3us subcurvus, obliquus, angulum fere rectum 

 Jingens ; Aus subrectus, obliquus, angulum acutum fingens, 

 3o multo longior. 



Second marginal areolet full seven-eighths of the length of the 

 first: first cross-vein nearly straight, slanting, forming a very obtuse 

 angle, parted from the second by about four times its length; second 

 slightly curved, slanting, forming a very obtuse angle, much longer 

 than the first ; third slightly curved, slanting, forming a nearly 



