518 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



3. Interocular width distinctlj^ greater than length of head; costa not continuing 

 or paralleling outline of lateral margins of pronotum, distinctly more 



flaring posteriorly grossus Dallas (p. 520) 



Interocular width less than length of head; costa continuing or paralleling 

 outline of lateral margins of pronotum teter (Spinola) (p. 523) 



Cyrtomeniis (Syllobus) emarginatus Stal, revived combination 



Plate figures 58, 240 



Cyrtomenus emarginatus St&l, 1862, p. 95; 1876, p. 27.— Walker, 1867, p. 147. 

 Sijllobus emarginatus Signoret, 1879, p. clxxiii; 1881b, p. 322, pi. 10, fig. 40. — 



Distant, 1880, p. 4, pi. 3, fig. 6.— Uhler, 1886, p. 3.— Lethierry and Severin, 



1893, p. 64.— Torre Bueno, 1939, p. 177. 



Diagnosis. — This species can be recognized not only within this 

 subgenus but among all the Cydnidae of the Western Hemisphere by 

 the triangularly projecting jugal apices (fig. 58). 



Description. — Male: 



Head:Lengthmore than half width, 1.79(1.62-2.47) :2.84(2.60-3. 13); 

 interocular width, 1.57(1.49-1.62); anterior outline forming one 

 blunt to acute angulation either side of median emargination (fig. 58); 

 surface polished, jugum with numerous round and elongate punctures; 

 ocelli large, separated from eye by space slightly more than half of 

 transverse ocellar width; jugum ventrally polished, impunctate; 

 maxillary plate with fine punctures and wrinkles. Antenna! seg- 

 ments: I, 0.58(0.50-0.70); II, 0.39(0.30-0.50); III, 0.79(0.73-0.86); 

 IV, 0.81(0.63-1.00); V, 0.95(0.83-1.00). Bucculae not more than 

 half as high as labial II; labium reaching between middle coxae. 

 Labial segments: I, 0.92(0.83-1.00); II, 1.49(1.30-1.66); III, 1.39(1.26- 

 1.66); IV, 1.06(0.93-1.20). 



Pronotum: Length more than half width, 3.80(3.60-4.20) :6.66(6. 15- 

 7.35); lateral margin straight on basal third or half, with submarginal 

 row of six to nine setigerous punctures; transverse impression obsolete, 

 marked by irregular, interrupted row of punctures; anterior lobe with 

 very broad, shallow, median, subapical depression; this depression 

 and sides of both lobes with coarse and fine punctures intermixed; 

 posterior lobe with few large punctures medially. 



Scutellum: Length little less than width, 4.14(3.76-4.49) :4.31(3.90- 

 4.81); impunctate across base and apex, disc with widely scattered, 

 coarse, sunken punctures. 



Hemelytron: Clavus and corium polished; clavus with single row of 

 large punctures; mesocorial punctures forming two more or less 

 distinct rows paralleling claval suture, elsewhere with scattered 

 punctures; exocorial punctation more abundant and variable than 

 that of mesocorium ; costa with 0-3 setigerous punctures. 



Propleuron: Polished, with numerous fine punctures in depression. 



