424 FAMILY XI. — LYGJEWJE. 



KEY TO EASTERN GENERA OF BEOSINI. 



a. Upper surface opaque, not wholly black, the pronotum with either 



the narrow side margins or the hind lobe pale, punctate with 



black; front margin of pronotum almost straight. 



b. Antennae sparsely pilose or almost nude; side margins of pronotum 



usually pale, but neither punctate nor furnished with seta?; basal 



segment of hind tarsus longer than the others united; scutellum 



without pale lines. 



c. Hind lobe of pronotum and corium pale, distinctly punctate with 



black; pronotum slightly narrowed in front, its side margins 



feebly rounded; antennae pilose; front tibae of male distinctly 



curved at base. I. Trapezonotus, p. 424. 



cc. Hind lobe of pronotum black, not at all or finely and obsoletely 



punctate; pronotum less narrowed in front, its side margins 



pale, almost parallel; antenna? nearly nude; front tibiae straight 



in both sexes. II. Malezonotus, p. 425. 



66. Antenna? furnished with numerous setose hairs; side margins of 



pronotum pale, provided with a few punctures set with long 



hairs ; basal segment of hind tarsus subequal to the other two 



united; apical third of scutellum with a pale line each side. 



III. Sphragisticus, p. 426. 

 aa. Upper surface more or less shining, wholly black; front margin of 

 pronotum concave; third segment of beak shorter than second. 



IV. Aphanus, p. 427. 



I. Trapezonotus Fieber, 1861, 50, 190. 



Small oblong-oval species having the head short, declivent, 

 slightly wider across eyes than front margin of pronotum ; 

 beak reaching middle coxae, its first joint to base of head ; ely- 

 tra covering sides of abdomen, in brachypterous form reach- 

 ing base of fifth ventral ; front femora feebly swollen, armed 

 beneath with one large and several small spines. Other char- 

 acters as under tribal heading and in key. One species occurs 

 in our territory. 



375 (589). Trapezonotus arenarius (Linnaeus), 1758, 448. 



Oblong-oval. Head, front lobe of pronotum, scutellum and under 

 surface dull black, the abdomen shining; hind lobe of pronotum, corium 

 and clavus dull yellow, rather thickly punctate with black or fuscous; 

 narrow side margins of pronotum and corium pale dull yellow; mem- 

 brane brown with pale veins; antennae dark brown, the basal joint in 

 great part pale; femora and first and second joints of beak dull yellow, 

 remainder of beak, and tibiae and tarsi dark brown, male; legs usually 

 wholly dark brown, female. Antennae with first joint slightly exceeding 

 tip of tylus; second slender, subequal in length to fourth, third shorter. 

 Scutellum broadly triangular, its disk and that of front lobe of prono- 

 tum finely and sparsely punctate. Ventral surface of abdomen sim- 



