220 Mr. W. L. Distant on 



Genus Plonisa. 

 Plonisa plafjiata. 



Plonisa plaqiata, Sign. Ann. Soc. Ent. Fr. s6r. 6, t. i. p. 327, pi. xi. 

 fijr. 52 (1881). 

 , JEthus hriamipennis, Dall. (nee Fabr.) List Hem. i. p. 113. n. 3 (1851). 



Katakadia, gen. nov. 



Pionotum with a very deep angulated cavity for the inser- 

 tion of the head. Head very broad at anterior margin, where 

 it is centrally slightly sinuate ; the lateral lobes longer than 

 the central, angularly narrowed posteriorly, being longest 

 behind the eyes. Other characters generally as in Cydnus. 



-This genus is founded for the reception of ^thus caligi- 

 nosuSj Walk., and the very peculiar structure of the head 

 and pronotum will sufficiently distinguish it. 



Katakadia caliginosa. 



J^lthus caliyinosus, Walk. Cat. Het. i. p. 161. n. 81 (1867). 



Hah. Malacca (Brit. Mus.) ; Perak {Doherty, coll. Dist.). 



Genus Cydnus. 

 Cydnus rudis. 



JEtkus rudis, Walk. Cat. Het. i. p. 157. n. 57 (1867). 

 ^thus proximus, Sign. Ann. Soc. Ent. Fr. s^r. 6, t. ii. p. 27. n. 18 

 (1882). 



Walker in his description made no mention of the reddish- 

 brown hue of the corium in his type specimen from the 

 Gambia. Other specimens from Sierra Leone are in the 

 British Museum. There seems little doubt that both the 

 above descriptions refer to one species. 



Cydnus insularis. 



Cfidnus insrtlaris, Westw. iu Hope Cat. i. p. 19 (1837). 

 ' jiithus nibrifemur,^\»\k. Cat. Het. i. p. 153. n. 34 (1867). 



Cydnus van'ans. 



Cydnm rarians, Fabr. Syst. Rhyng. p. 187 (1803). 

 Athits discolor, Walk. Oat. Het. i. p. 161. n. 82 (1867). 



Cydnus lepidus. 



uEthus lepidm, StSl, CEfv. Vet.-Ak. Forh. 1853, p. 215. 6: Hem. Afr. 



i. p. 21 (1864). 

 jEthxis leucosdyvia, Dall. (Germ. Rev. Silb. v.) List Hem. i. p. 119 



(1851). 



The name quoted by Dallas appears to be a MS. one only, 

 as I can find no trace of such a species described by Germar. 



