— 2 — 



d Anterior femur outwardly curved & twisted, somewhat dilated at 

 the apex. 6 th segment of abdomen somewat deeply emarginate, 7 th very 

 long [fig. 8]. Length 7 7,- 9 mill., Width 2 mill. 

 Argentine — Tala; Tucuman, San Pablo; 

 Imagines d, nymphs. 



Rufo-ferrugineous with yellowish pubescence; a 

 blackish spot towardsthe apex of the head. Anten- 

 nae blackish ferrugineous (basally yellow under- 

 neath). Pronotum blackish at apical margin, a 

 rather pale centrai longitudinal line (not raised). 

 Metanotum blackish-ferrugineous. Anterior femora 

 yellowish ferrugineous with a superior blackish 

 oblong stripe about the middle, a black spot at the 

 diìated apical part, tibiae yellow underneath, blac- 

 kish-ferrugineous dorsally, tarsi blackish-ferrugi- 

 neous. Posterior and intermediate legs blackish- 

 ferrugineous, femora with blackish longitudinal 

 stripes. Abdomen dorsally blackish. Entire venter 



Y\ a , 8. Apical seg- pale luteous, mesosternum and abdomen with lilac- 



ments of venter oiGer- grey pubescence. 



vis Perseus Kirk. p Differs from O. flavolineafus Champion by the 

 Fig. 9. -Apical segments long body, long l st genital segment, d, the exten- 

 of venter ofGerrisAn- s j on backwards of the pronotum & the much grea- 

 dromeda Kirk. ? ter s i en derness of the insect. 



4. Gerris Andromeda sp. nov. 

 Belonging to typical sùbgenus. 



First segment of antennae L l i iìl longer than 2 nd , which is ^^ longer 

 than 3 rd , which is V/ 11 longer than 4 th , the total length of the antennae 

 being a little shorter than that of the head and nota. Rostrum reaching 

 beyond apical margin of mesosternum. Head rather longer than anterior 

 lobe of pronotum, anterior and posterior lobes of the latter subequal in 

 length, each subequal to the mesonotum along its middle line. Nota taken 



