CYDNIDAE OF THE WESTERN HEMISPHERE FROESCHNER 649 



posterior lobe with numerous well-separated punctures becoming 

 finer posteriorly; umbones im.punctate. 



Scutellum: Length-width ratio, 0.68:0.86. 



Hemelytron: Exocorium with numerous, close, moderately coarse 

 punctures across full width; mesocorial disc with sparser, finer punc- 

 tures scattered along full length. 



Propleuron: Prosternal carinae about as high as labial II, margins 

 strongly convex. 



Legs: Anterior femur with submedian spine strongly oblique, apex 

 weakly and unevenly furcate, posteroventral margin with distinct, 

 subapical spine; anterior tibia with median ventral angulation but 

 no subbasal spine; posterior femur with a prominent, tubercle-like 

 angulation dorsally near apex, and ventrally with a strong, simple 

 subapical spine which is curved posteriorly. 



Terminalia: Gonostylus as illustrated (fig. 286a). 



Length of body: 2.64. 



Female: Similar to male but lacking leg modifications mentioned 

 for that sex and having transverse pronotal impression obtuse. 



Head: Length-width ratio, 0.53:0.61; interocular width, 0.38. 

 Antennal segments: I, 0.12; II, 0.07; III, 0.26; IV and V missing. 

 Labial segments: I, 0.18; II, 0.21; III, 0.40; IV, 0.14. 



Pronotum: Length-width ratio, 0.81:1.46. 



Scutellum: Length-width ratio, 0.60:0.71. 



Length of body: 2.24. 



Type data. — Signoret described this species from specimens from 

 "Bresil" and "Buenos-Ayres." The types have not been located. 



Specimens studied. — 1 male and 1 female: 



Akgentina: La Plata, 1 male, 1 female (Hung). 



Discussion. — Signoret's description and illustration of the meso- 

 corial punctation and the unique corial coloring leave no doubt about 

 the identity of this form. The only real discrepancy between the 

 specimens available and his illustration lies in the few lateral punctures 

 on the anterior pronotal lobe in contrast to the crowded punctures 

 of the sketch. 



Amnestus lautipennis (Stal) 

 Plate figures 75, 292 



Magoa lautipennis StM, 1860, p. 14.— Walker, 1867, p. 170. 



Amnestus lautipennis Stai, 1876, p. 21.— Signoret, 1883, p. 371, pi. 10, fig. 196.— 

 Lethierry and Severin, 1893, p. 75. 



Diagnosis. — The low, rounded prosternal carinae coupled with 

 the unmarked, yellow coria which are distinctly paler than the dark 

 brown pronotum and scutellum will mark this from the other small 

 (less than 2.5) species with five marginal, jugal pegs. 



