LIST OF HOMOPTEROrS INSECTS. 369 



a rim, excavated behind, hardh convex in front, its length rather 

 less than half its breadth ; front luteons, large, flat, subquadrate, a 

 little longer than broad, very slightly widening and ronnded on each 

 side towards the epistonia, ferruginous»and tuberculate along each 

 side, with three ridges, the side pair converging towards the enis- 

 toma; the latter is triangular, ferruginous towards the tip, much 

 shorter than the front ; mouth tawny : fore-chest a little longer than 

 the crown, straight along the hind border, very convex in front, with 

 two brown dots on the disk, its length about one-fourth of its breadth : 

 middle-chest triangular, marked with darker colour, a little longer 

 than the fore-chest -. abdomen obconical, as long as the chest, disk 

 beneath black : legs tawny, slightly grooved ; hind-shanks armed 

 with tw^o teeth : fore-wings testaceous, convex along the fore border, 

 slightly rugulose, their breadth near the tips much more than half 

 of that near the base; veins testaceous: hind-wings paler. Length 

 of the body 2 lines ; of the wings 5 lines. 



a. Columbia. From Mr. Turner's collection. 



21. Issus ACUTUs, Mas. 



Fiiscus^ subtus fcrnigineus ; caput acuminatum ; pedes fusco-ferru- 

 ginei ; ala anticce angustce^ posticce suhcinerece. 

 Body brown, ferruginous beneath: head small, but more than 

 one-fourth of the breadth of the fore-wings : crown narrow, conical, 

 almost pointed, its length rather more than twice its breadth ; a 

 triangular compartment on each side between it and the front which 

 is long-conical, transversely striated, and has three ridges, the middle 

 one more distinct than the other two which are parallel to the sides; 

 epistoma short obconical, hardly half the length of the front : mouth 

 ferruginous, reaching the hind-hips : eyes large : fore-chest full half 

 the length of the head, nearly semicircular in the middle, concave 

 on each side for the reception of the eye, with a slight ridge on the 

 border, and a longitudinal middle ridj^e : middle-chest triangular, 

 longer than the fore-chest, with three ridges, the side pair short and 

 slightly oblique: abdomen obconical, a little longer than the chest: 

 legs ferruginous, partly brown, slightly grooved ; hind-shanks armed 

 with three teeth ; hind-feet rather broad : fore-wings almost elliptical, 

 narrower than is usual in this genus, slightly convex but not widened 

 on the fore border, with eight longitudinal ridged veins, the tirst and 

 second distinct, the third united near the base to the fourth which 

 is united near the tip to the tilth, the latter is united beyond half its 

 length from the tip to the sixth; cross-veins indistinct: hind-wings 

 grayish. Length of the body 2^ lines ; of the wings 5 lines. 

 a. Philippine Ishmds. From Mr. Cuming's collection. 



L 



