MORGAN HEBARD 333 



Length of body, 99.3; length of pronotum, 43.7; length of 

 pronotal collar, 7.7; length of tegmen, 12; greatest tegminal 

 width, 3.7; length of wing, 11.2; length of cercus, 4.8; width 

 of cercus, 2 mm. 



Oligonicinae 

 Thrinaconyx futnosus Saussure and Zehntner 



1S94. Thrinacotiyx fumosus Saussure and Zehntner, Biol. Cent.-Amer., 

 Orth., I, p. 179, pi. X, figs. 4 to 10. [cf ; Volcan de Chiriqui, Panama.] 



Porto Bello, Panama, VIII, 18 to 22, 1916, (Harrower), 1 9. 



Alhajuela, Pan., IV, 8, 1911, (Busck), 1 juv. o^ ; IV, 18, 1911, 

 (Busck), 1 cf . 



Rio Trinidad, Pan., V, 4, 1911 and VI, 6, 1912, (Busck), 

 1 cf , 1 9. 



The female of this species was previously unknown. We note 

 the following features for the specimen from Porto Bello. 



Similar to male except as follows. Apterous. Size no larger, 

 form slightly heavier except that the abdomen is decidedly 

 heavier, this greatest meso-distad. Head slightly broader, ver- 

 tex with dorsal margin less concave l)etween the eyes, very 

 weakly concave, with sulci weak; ocelli present but only half as 

 large, the ventral ocellus with dorsal margin not acutely pro- 

 duced, as is the case in the male. Facial scutellum with height 

 about two-fifths basal width as in male, convex dorsal margin 

 not as distinct. Pronotum with surface and margins heavil}' den- 

 tate-tu])erculate. Cephalic coxae with cephalic margin bc^iring 

 nine distinct denticulations, the lateral margins with more nu- 

 merous l)ut not as heavy denticulations, caudal surface irregularly 

 denticulate, all of these the bases of minute, microscoi)ic hairs. 

 Armament of cephalic femora and tibiae as in male but slightl}^ 

 heavier, the larger til)ial spines all distinctly denticulato-serrulate 

 under the lens. Supra-anal plate short, shield-shaped, length 

 three-quarters of proximal width, medio-longitudinallj^ carinate, 

 lateral margins moderately convex-convergent to the rather 

 sharply rounded apex; in male similar l)ut with apex broadlj^ 

 roundiMl. Cerci very short, stout proximad, tapering decidedly 

 to the terminal joint whicli is very slender and elongate; shorter 

 and iieavier i)roximad, with terminal joint more elongate than 



THANS. AM. ENT. SOC, XLVIII. 



