REPORT ON THE PELAGIC HEMIPTERA. 65 



tarsus fuscous black. Middle legs : upper margin of acetabula, a streak on the outer side 

 of coxse, femora with two spots at the base and the apex, fuscous black ; tibi^ brownish, 

 with black hairs, apex fuscous. Hind legs : upper rim of acetabula, and a streak in 

 front, coxae with a longitudinal streak continued on to the trochanters, femora with the 

 base, an exterior spot near it and the apex, fuscous black ; tibiae and tarsi fuscous brown 

 with black hairs. 



Head moderately convex above, rather strongly convex in front. Eostrum : third 

 joint about three times as long as the first and second together ; fourth about one-third 

 the length of third. 



Front legs (PL II. fig. 4 $ f.L): femora stout, slightly curved, tapering towards base 

 and apex, posterior side with a rounded blunt tubercle at about the middle, a slight notch 

 near the apex, and a small tubercle between the notch and the apex ; apex fringed with 

 strong bail's. Tibia as long as femur ; tarsus more than one-third the length of the tibia. 



Middle legs : femur rather stout, unarmed ; tibia about one-fifth shorter than the femur, 

 armed below with a few fine spines. 



Hind legs: femur very slightly shorter than the middle femur; tibia about two- 

 thirds the length of the femur, armed below with fine spines ; tarsus about one-fifth the 

 length of the tibia, joints subequal in length, the second cleft about the middle. 



Abd.omen (PI. II. fig. 4 $ ah. a., and 4 $ ah. h.) : sixth segment below nearly as long 

 as all the other ventral segments taken together, hind margin concave, fringed, slio-htly 

 emarginate in the middle. 



Genital segments : above one is visible, about as long as broad, very convex, hind margin 

 angularly emarginate. Below, the first, which is part of the first above, is nearly as long 

 in the middle as all the ventral abdominal segments taken together, hind margin concave, 

 sides sloping backwards and upwards. The second segment below is a very convex plate 

 surrounded by the first segment; hind margin rounded, and forming with the hind margin 

 of the first above a crescent-shaped aperture at the end of the body. 



$ . Widely ovate, widening to the middle, then parallel-sided. Colours brighter and 

 markings more distinct than in the male. Head with a large blackish spot, prolonged 

 anteriorly, between the eyes ; clypeus and antenniferous tubercles more suffused. Pronotum 

 more strongly marked, and with a large brown spot joined to the front margin on each side 

 of the middle line. Mesonotum much more distinctly marked : front margin narrowl}^ 

 blackish-brown ; a central longitudinal line widening backwards, and widest behind the 

 middle ; on each side of central line a slender line, first going slightly obliquely outwards, 

 forming an angle and running sharply obliquely inwards, and having from the angle to 

 the end a large reddish-brown oblong blotch joined to it ; more external to the last-men- 

 tioned line a slender line, curved inwards and nearly reaching the oblong blotch external 

 to the latter line, another starting from the front margin below the level of the eye, runs 

 along the side of the base of the middle legs ; from the base of the middle legs another 



(ZOOL. CHALL. EXP. — PART XIX. — 1883.) T 9 



