170 



HTDKOiLETEID-i:, 



Subfamily II. HYDROMETRIX^. 



A very distinct subfamily, containing one very widely distributed 

 genus. Its extent and distribution are still most imperfectly 

 known, as is evident by occasional descriptions of species from 

 the most widely separated regions. 



Genus HYDROMETEA. 



HTdrometi-a. Lutr. Precis des caract. c/en. des Ins. p. 86 (1796): 

 'Curt. JBn't. £iit. i. p. 32 (lt24j : }stil Hem. Afr. iii, p. 166 

 (1865) : Saund. Rem. Htt. Brit. Islds. p. 147 (1891^). 



Limnobates, Burm. Handb. ii. p. 210 (1835) : Fieber. Eur. Hem. 

 p. 103 (1861). 



Type, H. stagnorum, Linn., a Pala?arctic species. 

 Distribution. Probably almost universal. 



Yery elongate and linear; head very long, much longer than 

 pronotum, dilated anteriorly, eyes remote from anterior margin 

 of pronotum, ocelli absent ; antenna? slender, inserted near apex 

 of head: rostnun a little shorter than head; pronotum long, more 

 than twice as long as wide : scutellum scarcely visible ; hemelytra 

 shorter than the abdomen, sometimes undeveloped. 



The insects are found on the surface of 

 water in sheltered situations and are of sluggish 

 habits. 



955. Hydrometra vittata, Stal. Ofv. T'et.-Ak. 



Fiirh. 1870. p. 705: Dist. A.M.X.H. (7) 



xi, pp. 25-5-6 (1903). 

 Limnobates albolineatus. Scott. A. M. JN . H. 



(4) xiv, p. 447 (1874). 

 Hvdrometi-a 2rieeni. Kirk. Entomologist, 1898. 



•p. 2. 



Ferruginous ; hemelytra and apices of the 

 femora piceous : a slender central hue extend- 

 ing through the postocular portion of the head 

 and pronotum, a line at the lateral margins of 

 the anterior area of the pronotum, and body 

 beneath much paler ; a line to clavus, a central 

 longitudinal fascia to hemelytra (sometimes 

 practically obsolete) white ; length of head 

 from eyes to apex nearly two and a third times 

 greater t!ian from eyes to base ; hemelytra 

 reaching the base of the fifth abdominal seg- 

 ment. 



Length 11 to 12 millim. 



Hah. Bombay ; Bor Ghat {Dixon). Ceylon 



{Green). Burma ; Palon {Fea) ; Stian States, Taunggyi {Thompson). 



Tenasserim : HoungdarauYalley {Fea). — Malay Peninsula ; Pahang 



{C'raddocl). Philippines. Japan (Leuis). 



Fig. 123. 

 Hydrometra vittata. 



