RHYNCHOTA PROM CHINA, JAPAN, ETC. 51 



13. *Amorgius indicus (Lep.-Serv.). Siam, Bangkok (0), flew 

 to light on board the 'Centurion,' about twenty miles from land, 

 Dec. 3rd, 1899. 



Fam. NepidjE. 



14. *Nepa cinerea, Linne. China, Chi-fu, May 9th, 1899, in 

 a stream (P). 



15. ---Ranatra unicolor, Scott. China, Pei-hai-to, Sept., 1898 

 (P). Dr. Montandon remarks: — " Cette espece est bien voisine 

 de B. vicina, Sign., mais en differe par les yeux plus globuleux, 

 aussi longs que Targes, moins transversaux, I'espace interoculaire 

 un peu plus retreci; les deux epines du milieu du femur anterieur 

 plus espaeees ; I'extremite du femur anterieur non epineux. Les 

 pattes, les elytres et le metasternum sont conformes de fa^on a 

 peu pres identique. Chez R. vicina. Sign., les deux epines du 

 femur anterieur situees a I'extremite du tibia au repos sont 

 presque sur le meme plan transversal " {in litt. Oct. 11th, 1900). 



16. ^Ranatra chinensis, Mayr. Cho-sen. Dr. Montandon 

 writes me : — " J'ai aussi dans ma collection un exemplaire sembla- 

 ble du Japon recu jadis de MM. Staudinger, sous le nom de Ranatra 

 princeps, Westw., nom que je ne connais pas et qu'il faudrait veri- 

 fier " {in litt. May 19th, 1900). The publication of this name is 

 unknown to me also. 



Fam. Gerrid^e. 



17. Metroco7'is lituratm (Stkl) . China, Hongkong. "Common 

 in pools and streams on the hills," but only one pair captured, 

 March, 1899 (0). 



18. Gerris fietcheri, sp. n. Very closely allied to G. najas 

 (De Geer), Kirk, [paliidam (Fabr.), auctt.] , but is scarcely so 

 robust, and a trifle longer. The general structural characters 

 are those of najas, but the second segment of the antennae is 

 distinctly longer, in proportion to the third, than in that 

 species, and, in the female, the first genital segment is wider in 

 proportion. In colour, the pronotum is more or less rufescent, 

 and the elytra are pale fuscous, dirty whitish at the base, with 

 dark brown nervules. Had najan {palud>im\) been recorded from 

 Siberia or Japan, I would probably have regarded this as a local 

 form of it, but it seems to be sufiiciently distinct by the characters 

 given above. 



China, Wei-hai-wei, May 20th, 1899 (P). I have great 

 pleasure in naming this addition to the Palsearctic fauna after 

 Mr. Fletcher. 



Fam. REDUviiDiE. 



19. Peirates, sp. China, Wei-hai-wei, May 27th, 1899. 



t I have demonstrated in Entom., 1899, p. 203, that the true najas, 

 De Geer, is identical with palitdwrn, Fabr. ; the najas of authors is 

 canalittm, Dufour. 



