72 FAMILY IV. — CYDNID;£. 



//. Larger, length 5 or more mm.; osteolar opening anteapical, 

 prolonged as a short distinct canal; pronotum of male, in 

 our species with a broad deep impunctate concavity on middle 

 of apical half. IV. Geocnethus, p. 80. 



del. Head with a distinct transverse groove just behind the recurved 

 margin, the groove thickly beset with irregular bristles and 

 short spines. 

 g. Scutellum short, about as broad at base as long, its tip subacute; 

 osteolar canal reaching almost to outer margin of metasternal 

 plate, its tip flat, clavately rounded. V. Macroporus, p. 81. 

 gg. Scutellum longer than broad, its tip rounded; osteolar canal not 

 more than half the length of metasternal plate. 

 h. Margins of body fringed with numerous long yellowish hairs; 

 apex of scutellum broadly rounded; osteolar canal ending in 

 a rounded concavity. VI. Cydnus, p. 81. 



hh. Margins of body not fringed with hairs; apex of scutellum nar- 

 rowly rounded; osteolar opening not extended as a canal, but 

 as a flattened oblique plate. VII. ^thus, p. 83. 



bb. Scutellum with apex mucronate, the coria meeting behind its tip; 

 form oblong; front of head with short stout comb-like teeth; 

 osteolar canal long, slender, reaching three-fourths or more the 

 distance to outer margin of metasternal plate; length less than 

 3 mm. VIII. Amnestus, p. 85. 



aa. Margins of head and pronotum without bristly hairs or spines; tibiae 

 with fewer and shorter spines ; front tibiae not compressed ; tarsi 

 stout, second segment more slender than basal one. (Subfamily 

 Sehirinte). IX. Sehirus, p. 89. 



I. Cyrtomenus Amyot & Serville, 1843, 90. 



Species of medium size and oval convex form having the 

 head broader across the eyes than long, its apex broadly 

 rounded ; cheeks broad, slightly surpassing tylus and almost 

 contiguous in front of it, their margin reflexed not sinuate, 

 setiferous within ; eyes prominent, bluntly subcorneal, coarsely 

 granulated ; ocelli very large ; beak slender, reaching hind 

 coxae, the second joint longer than third, fourth shortest ; 

 antennas short, stout, joint 2 slightly shorter and more slender 

 than 1, 3 — 5 stouter, fusiform, pedunculate, each one-half 

 longer than second ; pronotum subquadrangular, somewhat 

 narrowed in front, hind angles obtuse, front ones rounded, 

 side margins with erect coarse bristles, nearly straight, nar- 

 rowly reflexed ; scutellum broad, triangular, with apex bluntly 

 rounded ; elytra broad, their tips obliquely truncate, side mar- 

 gins ciliate ; membrane hyaline, much surpassing the abdomen ; 

 femora broad, subdepressed, beset above and beneath with 



