TilE CANADIAN ENTOMOLOGIST. 4^3 



apex of libia* and tlie tirsi blackish. Tergites dark castaneous, verging 

 on piceous on abdomen proper and inward half of pleurites ; one or two 

 smaller brown spots medially. Beneath yellowish-fulvous, a lateral, 

 sinuous, dark castaneous line on the mesosternum on each side, edged 

 with silver ; also some obscure marks. The first segment of the antennae 

 one-fifth longer than the second. Fore femora scarcely longer than the 

 tibiie, which are nearly four times as long as the tarsi ; last tarsal segment 

 more than twice as long as the penuliimate. Middle femora slender, 

 as long as body from base of clypeus to base of pygophor ; scarcely longer 

 than tibiae and tarsi together ; tibiae about twice and a half as long as the 

 tarsi, first tarsal segment twice as long as the second. Hind femora 

 one-third longer than the middle pair ; scarcely longer than the tibiae and 

 tarsi ; tibiae slightly more than twice as long as the tarsi ; first tarsal 

 segment not twice as long as the second. The hind part of the metanotum 

 is triangular, the sides shortly truncate, and the base a little emarginate. 



(^ . — The pygophor is very remarkable, and I hope to figure it in my 

 forthcoming "Notes on the Gerridae "; the hooks, etc., are yellowish- 

 fulvous, the apices blackish. 



Length, 8 mill. 



Hab.: India, Kurseong (which I believe is near Darjiiing, and is also 

 called " Karsiang "), in coll. Belgium Mus. 



This genus has considerable general resemblance to Chitnarrhometra 

 orienialis (Distant). It is true that Mr. Distant places the latter in the 

 " Halobataria," and indeed originally described the species as Halobates I 

 but the emarginalion of the eyes he might have overlooked. The antennal 

 proportions are, however, quite different, as also those of the labium. It 

 may also be remarked that Mr. Distant has described the labium (rostrum) 

 as being composed of five segments !I — a condition unparalleled in 

 Hemiptera; in fact, practically impossible. On referring to the original 

 figure, it is seen that Mr. Distant has mistaken the extruded end of the 

 setae for a fifth segment !! Mr. Distant cites Bianchi as the authority for 

 the statement that Chimarrhometra is a fresh-water Himalayan genus, 

 whereas Bianchi had not seen a specimen of the genus he described, the 

 particulars being taken entirely from those of Mr. Distant. The genus is 

 evidently semiaquatic, and as there is presumably no sea-water in Jhelam 

 Valley, it must necessarily be a fresh-water genus ! 



It is evident that Mr. Distant's descriptions and figures are quite 

 untrustworthy, and we must await further captures of this interesting form. 



