AMERICAN HYMENOPTERA. 117 



thorax, and posterior margin of scutellum, yellow; metathorax smooth and 

 polished, basal margin crenulated; tegulse brown; wings yellow at base and 

 along costa, and with a fuscous streak at tip of marginal cell; legs clothed with 

 pale pubescence, anterior pair pale brown, stripe on middle tibiae beneath and 

 spot at apex of posterior pair beneath yellow; abdomen very densely punc- 

 tured, golden-sericeous, segments 3 — 6 yellow, more or less margined at apex 

 with fuscous or black; apical segment short, yellow at tip which is rounded 

 and obtusely einarginate medially; venter with a yellow spot on sides of second 

 segment. Length .35 inch. 



H<th. — Mexico, (Sumichrast). Two specimens. 



Antliidiiiiii toltecutn.— % . — Form and color of apicale, but more robust, 

 the pubescence longer and more dense; clypeus, sides of face, and spot on 

 mandibles, yellow ; a slightly interrupted line on posterior margin of scutellum 

 and dot on tegulse yellow; tubercles flattened and scale-like above; wings as 

 in apicale ; four anterior tibiae and tarsi fringed behind with long pale pubes- 



cence, line on anterior tibiae in front yellow, tips of middle tibiae, line 

 T~^-^ on posterior pair behind and all the tarsi, fulvo-ferruginous; abdomen 



with a short, rather dense golden sericeous pubescence, segments 3 — 7 

 yellow, more or less black at base, a transverse spot on each side of segments 

 3 — 5 and two spots on apical middle of sixth segment, which is sinuate, black; 

 apical segment deeply and squarely emarginate on apical middle (as in figure). 

 Length .35 inch. 



Hah. — Mexico, (Sumichrast). One specimen. 



Antliidiiiin agiiatnm. — %. — Small, black, opaque; head and thorax 

 with large deep coarse punctures, thinly pubescent; clypeus, narrow anterior 

 orbits, narrow interrupted line on posterior margin of head above, two spots 

 between insertion of antennae, broad posterior margin of scutellum, a dot on 

 each side at base, and a broad, even uninterrupted band on segments 3 — 7, 

 all bright lemon-yellow; tegulse prominent and cariniform, scutellum broadly 

 rounded behind and obtusely emarginate medially; tegulae pieeous; wings 

 fuliginous, darker on costal margin, legs slender, brown, shining, tarsi thickly 

 clothed with pale pubescence; abdomen finely and densely punctured, gradu- 

 ally more coarsely so at sides, apical segment small, broadly rounded behind. 

 Length .25 inch. 



Hah. — Mexico, (Sumichrast). One specimen. A pretty little species. 



megacliile totonaea. — 9- — Black, shining, sparsely and finely punc- 

 tured; face and cheeks clothed with a short dense white pubescence, on the 

 vertex it is sparse and black; clypeus nude, with a little white pubescence on 

 apical margin; pubescence of thorax black, except a slight admixture of white 

 on each side of prothorax above; mesothorax except sides and scutellum, which 

 is rounded behind, nude and with scattered fine punctures; wings dark fuligi- 

 nous, violaceous, darker on costal margin, legs clothed with short black pubes- 

 cence, basal joint of tarsi broad; abdomen finely punctured, nude above, with 

 a little black pubescence at base and scattered black hairs on sides of apical 

 segments; sixth segment sericeous, very densely and minutely sculptured, 

 broadly rounded at tip; ventral scopa yellowish-white, black at sides of basal 

 segments. Length .55 inch. 



Hah. — Mexico, (Sumichrast). Two specimens. 



