428 



4 4a 



Explanation of Figures. 

 2. D. uiatanituy aedeagus. 

 o. D. 7tiatanifu, aedeagus. 



4. D. mardininae, full view of pvgophor, 

 ■ia. D. mardininae,- lateral view of pygoplior. 



5. D. nigrifacies, aedeagus. 



5a. D. nigrifacies, right genital style of aedeagus. 



Hal). Fort de France, Martinique (Mardinina), B. W. I., 

 June, 1911. Described from one male in the American Mus. 

 ]S"at. Hist., ]Srew York. 



D. nigrifacies sp. nov. figs. 5, 5a. 



$ Brachypterous. Lateral pronotal carinae divergingly curved poste- 

 riorly, not reaching hind margin ; vertex square, carinae not distinct ; 

 length of face less than twice the width (1.70 to i) sides arcuate, carinae 

 very fine, median carina simple, vertex and face in profile rounded; 

 antennae reaching slightly beyond base of clypeus, second joint twice the 

 length of first; hind tibia slightly longer than tarsi, first tarsal joint 

 equal to the other two together, spur longer than first tarsal joint, broad, 

 laminate, tectiform, with many minute teeth on hind margin. 



Face, genae, vertex pro- and mesonotum shiny black, middle of vertex, 

 posterior and lateral margins of pronotum and lateral and posterior 

 angles of mesonotum yellowish, first segment of antennae dark, second 

 lighter, clypeus, thorax (except parts of pro- and mesonotum), base of 

 abdomen and legs capucine yellow or orange bufif, abdomen brown, anal 

 segment yellowish, tegmina reaching to middle of abdomen, hyaline, light 

 orange bufiF, marginal border slightly fuscous. 



Pygophor nearly as broad as long, edges entire, a wide emargination 

 on dorsal edge, anal segment sunk within pygophor, with a pair of 

 broad, short spines near basal corners which are not visible without dis- 

 section or without having the anal segment turned up dorsally; styles 

 broad, apex truncate and very slightly convex, the inner edge near apex 

 thickened and elevated, the inner edge on basal half squarely produced 

 and meets the fellow style on the median line; aedeagus cylindrical. 



