642 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



Specimens studied. — 7 males, 6 females. 



Panama: Barro Colorado Island, Canal Zone, Jan.-Mar., 1944, Zetek-5122, 

 2 males, 1 female (USNM); July-Aug. 1942, Jas. Zetek, No. 4985, 4 males, 3 

 females (RCF, USNM); Oct.-Nov. 1941, Jas. Zetek, No. 4915, 1 male, 2 females 

 (USNM). 



Discussion. — The present interpretation of championi is based on 

 the following evidence: (1) It is the only Central American species 

 described with a subbasal fuscous spot on the corium; (2) the prono- 

 tum and scutellum were described as thickly and coarsely punctate; 

 (3) the "frontal [clypeal] spines" were described as "much more 

 developed than lateral ones"; and (4) Dr. China has supplied the 

 information that the exocoria are fully punctate across their width. 



Amnestus cribratus (Stil) 



Plate figure 289 



Magoa cribrata St&l, 1860, p. 14. 



Amnestus cribratus Walker, 1867, p. 170. — Stai, 1876, p. 21. — Signoret, 1883, 

 p. 370, pi. 10, fig. 195.— Lethierry and Severin, 1893, p. 75. 



Diagnosis. — The punctate umbones coupled with the color pattern 

 (coria mostly yellowish hyaline, contrasting strongly with dark brown 

 head, pronotum and scutellum) will mark this species from its 

 congenors. 



Description. — From two males and two females. Color: Head, 

 pronotum, scutellum, and vague band across basal fourth of corium 

 blackish brown, corium mostly translucent yellow; venter reddish 

 brown, legs paler. 



Male: Oval, sides parallel. 



Head: Length about four-fifths width, 0.49(0.48-0.50) :0.61 (0.58- 

 0.64) ; interocular width, 0.34(0.33-0.36) ; clypeus surpassing truncated 

 juga by less than own width, with four apical pegs; juga with five 

 marginal pegs ; surface cribrately punctate except on clypeus and base. 

 Antennal segments: I, 0.13(0.13-0.13); H, 0.03(0.03-0.04); HI, 

 0.26(0.26-0.26); IV, 0.23(0.23-0.23); V, 0.26(0.26-0.26). Labium 

 reaching between middle coxae. Labial segments: I, 0.26(0.26-0.26); 

 II, 0.30(0.30-0.30); III, 0.31(0.31-0.32); IV, 0.23(0.22-0.24). 



Pronotum: Length almost two-thu-ds width, 0.96(0.92-1.00): 

 1.54(1.45-1.63); anterior margin moderately concave, cupped behind 

 eyes; transverse impression distinct, marked by row of coarse punc- 

 tures; anterior lobe moderately tumid, strongly and closely punctate 

 laterally, apically, medially, posteriorly and on most of calli; posterior 

 lobe, including umbones, with crowded, strong punctures. 



Scutellum: Length more than three-fourths width, 0.58(0.56- 

 0.61):0.75(0.70-0.80). 



