226 PROCEEDINGS OE THE ACADEMY OF 



nence, stemruata placed on the line of the eyes, a little nearer them than each 

 other ; rostrum reaching the posterior coxae, first joint thickest, about equal in 

 length to the second, third and fourth subequal, slender; thorax trapezoid; 

 hemelytra about one-third shorter than the abdomen, a little shorter in the 

 female, membrane with the nervures very irregularly ramose; abdomen thick, 

 margins not recurved, superior caudal segment longest in the male; legs un- 

 armed ; posterior thigli3 not thickened, slightly curved. 



P. opacus. Dark brown, without lustre, punctured, pubescent; head 

 with the space between the antenniferous tubercle filled up, antenna} pubes- 

 cent, brown, with the apical two-thirds of the tip joint yellow, upper surface 

 of the head covered with yellowish pubescence; thorax roughly punctured, a 

 tranverse, slightly elevated lobe near each anterior angle, posterior margin 

 with a fine, transverse, impressed line, anterior angles acute, posterior ones 

 rounded, lateral margins sinuated, edge slightly recurved, posterior margin 

 truncate; scutellum and corium of the hemelytra punctured and uniform with 

 the thorax ; membrane pale brown, nervules very irregular, tip reaching the 

 end of the fifth segment; tergum and beneath uniformly roughly punctured, 

 pubescent, incisures of the tergum yellowish at the lateral margins ; legs dark 

 brown, pubescent, tarsi honey-yellow. 



Length 10 millim. Humeral breadth 2h millim. tf $. Takanosima, 

 Japan. 



This genus presents an entire anomaly among3t the Coreoid Hemiptera with 

 simple legs ; it seems to have most affinity with the Gonoceridse, but it differs 

 from them in the length of the hemelytra and the irregularity of its nervules ; 

 its position in the series, as the system now stands, is very difficult to define. 



Gonocerus, H. Schf. 



1. G. bipunctatus, H. Schf. Wanz. Ins., vi., 9, tab. 1S3, fig. 566. 

 Takanosima and Loo-Choo. 



2. G. punctipennis. Body ovate, tawny -yellow ; head punctured 

 with black, space almost filled up between the antenniferous tubercles ; tuber- 

 cles but slightly prominent, middle of the head sulcate ; antennae reddish, 

 pubescent, tips of the first three joints blackish, middle of the apical joint 

 dusky, second joint longest, third a little shorter than the basal one, apical 

 joint about half the length of the second, subfusiform, thickest; two basal 

 joints of the rostrum about equal, apical ones subequal, apex minutely black ; 

 a slender black line behind the eyes to the base of the head, eyes brownish, 

 globular, stemmata reddish ; thorax trapezoid, gradually narrowed anteriorly 

 to the breadth of the head, sides a little arcuated, margins recurved, paler 

 than the surface, humeral angles bluntly triangular, hardly acute; surface 

 closely punctured with black, behind the head slightly depressed, before the 

 posterior margin a fine, transverse, elevated line interrupted at each end ; scu- 

 tellum and hemelytra minutely and densely punctured, the latter with pale, 

 smooth, elevated costal margins, and upon the disk a small round black dot, 

 membrane pale, semitransparent, nervures longitudinal, numerous, wings 

 same color as membrane, nervures black; abdominal margins lightly re- 

 curved, tergum with two small black spots before the tip, and a number of 

 irregular blackish marks near the sides ; venter and beneath pale-yellowish, 

 covered with minute, scattered punctures, a double irregular row of black 

 points each side of the venter, within the stigmatal orifices, a few others against 

 the sutures of the discoidal segments, and a single one upon the side of the 

 medio and postpectus ; legs minutely pointed with black, finely pubescent. 



Length 14 millim. Abdominal breadth $ 7 millim. Simoda, Japan. 



The female has the antepenultimate segment posteriorly deeply emarginate ; 

 at the base of this segment is also an elevated biemarginate process, at which 

 the vulvar opening commences. 



[June 



