ART. 6. STUDIES ON LEUCOSPIDINAE C. J. WELD. 25 



Pronotiim contiguous punctate with one transverse carina parallel 

 to its carinate hind margin; mesoscutum about 1.5 times as long as 

 pronotum; scutellum with a transverse sparsely punctate polished 

 band near its smooth, broadly rounded apex ; hind margin of meta- 

 notum rounded, its loveae finely reticulate punctate within, with 

 margins highly polished ; propodeum about length of metanotum in 

 median line, median and lateral carinae absent, transverse area near 

 hind margin mostly bare and highly polished, spiracular area 

 pubescent ; hind coxa setigerous punctate, the hairs long and silvery, 

 upper margin with a slender, sharp spur; hind femur nearly 2.5 

 times as long as wide, densely punctate except on yellow areas, 

 where punctures are scattered and shallow, basal tooth on under 

 side large and prominent, followed by a row of 10 smaller teeth, the 

 first of which is small and inconspicuous, the next four increasing in 

 size and well separated, the remaining five becoming smaller and 

 crowded ; front and middle claws pectinate ; hind claws simple, with 

 a few minute spines at base. Wings fuliginous, pale behind, veins 

 brown. 



Abdomen seen from above is constricted behind second tergite, 

 swollen through sixth and compressed apically ; the second segment 

 is about 1.5 times longer than wide, its median surface elevated, 

 smooth and polished but not carinate ; seen from side view abdomen 

 is longer than head and thorax together, with straight dorsal line 

 and apex broadly rounded. Ovipositor reaches apex of scutellum, 

 its tip black and compressed. 



Described from two female specimens. 



T7/pe.— Cat No. 24387, U.S.N.M. Type and paratype. 



Habitat. — Type locality; Costa Rica: Juan Vinas (Schaus) ; Para- 

 type, Guatamala: Amatillan (February, 1912). 



20. LEUCOSPIS AFFINIS Say. 



Leucospis affinis, Say, Geaenichek, Bull. Wise Nat. Hist. Soc, n. s., vol. 4, 

 1906, pp. 153-159, 1 pi. 



This is the commonest and best-known species in the United States 

 (pi. 1, fig. 1) and the only one whose habits and life history have been 

 studied in detail (Graenicher, 1906). It is widely distributed and 

 is represented in the United States National Museum from the 

 following localities: Massachusetts, Southampton (July 14, 1894); 

 Connecticut, Hartford (July 12, 1896), Lyme (June 28, 1915) ; Penn- 

 sylvania, North East (July 8, 1916, Cushman), Highspire (June 27, 

 1908, Fisher), Carlisle Junction (July 1, 1909, Walton), Inglenook 

 (June 20, 1909, Myers) ; Virginia, Vienna (July 27, 1912, Cushman), 

 Falls Church (September 1, 1915, Greene) (September 15, 1917, 

 Champlain), East Falls Church (June, 1916, Eohwer), Rosslyn 



