658 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iii 



rows of coarse punctures laterally and subapically, calli and space 

 between with few minute punctures; posterior lobe with widely scat- 

 tered, fine punctures, umbones impunctate. 



Scutellum: Length-width ratio, 0.56:0.68. 



Hemelytron : Mesocorium with scattered, distinct punctures for full 

 length; exocorium abundantly punctate to costal margin. 



Propleuron: Prosternal carinae less than half as high as labial II, 

 rounded. 



Length of body: 2.24. 



Color: Head, anterior pronotal lobe and scutellum dark reddish 

 brown; posterior pronotal lobe, except immediately mesad of umbones 

 and along narrow posterior margin, yellowed; clavus and corium yel- 

 low, former with apical cloud fuscous, corium with subbasal spot, 

 irregular band along radial vein, and apical margin fuscous; venter 

 mostly reddish brown ; labium and legs yellow. 



Type data.— Holotype female (USNM 64410), "Ponce, P. K., 

 IV-4-1946, L. T., J. Maldonado Capriles." 



Discussion. — Whether or not the unusual development of two 

 additional pegs on the apex of the clypeus is abnormal must be proven 

 by examination of additional specimens. If the extra pegs prove to 

 be a freak condition, then this ma}' simply be the female of A. radialis, 

 new species, to which this specimen will then run in the key. 



Amnestus spinifrons (Say) 



Plate figures 2, 37, 113, 131, 160, 168, 173, 185, 298 



Cydnus spinifrons Say, 1825, p. 316. 



Amnestus spinifrons Dallas, 1851, p. 126.— Walker, 1867, p. 167— Stai, 1876, p. 



21.— Uhler, 1877, p. 370; 1886, p. 3.— Signoret, 1883, p. 367, pi. 10, fig.192. 



— Lethierry and Severin, 1893, p. 75. — Banks, 1910, p. 99.— Van Duzee, 



1917, p. 23 —Torre Bueno, 1939, p. 182. 



Diagnosis. — Among those species with the five pegs on each jugum, 

 this species may be recognized by the very long labium which surpasses 

 the hind coxae. 



Description. — Color: Dark reddish brown, appendages paler. 



Male: Elongate, sides subparallel. 



Head: Length more than three-fourths width, 0.58(0.53-0.66): 

 0.73(0.65-0.78); interocular width, 0.45 (0.42-0.50) ; clypeus as long as 

 juga, apices continuous; jugum with five marginal spines; surface 

 coarsely punctate on jugum and between eyes, Antennal segments: 

 I, 0.17(0.14-0.20); II, 0.05(0.05-0.06); III, 0.33(0.30-0.36); IV, 

 0.31(0.27-0.34); V, 0.30(0.26-0.33). Labium reaching apex of 

 sternite III. Labical segments: I, 0.33(0.30-0.40); II, 0.51(0.43- 

 0.56); III, 0.75(0.66-0.83); IV, 0.42(0.40-0.44). 



Pronotum: Length about two-thii'ds width, 1.23(0.95-1.42): 1.84- 



