1865.] lf» 



pale ochraceous pubescence ; tip of the terminal segment very slightly 

 emarginate ; ventral segments with an apical fringe of whitish pube- 

 scence. Length 4 lines; expanse of wings 7 lines. 

 Collection. — Dr. J. Ghindlach. One specimen. 



Megachile maura, n. sp. 



Entirely black; wings fusco-hyaline ; legs piceous. 



Female. — Deep shining black, clothed with short, dense black pube- 

 scence ; the clypeus, a flattened space above it, vertex, disk of mesotho- 

 rax, scutelhun and the abdomen above except the basal segment, naked, 

 smooth and polished ; clypeus depressed, rather closely punctured ; 

 mandibles robust, broad at tip, sparsely punctured, shining, and deeply 

 grooved along the outer margin; antenna; piceous-black, the flagellum 

 pale beneath. Thorax finely and sparsely punctured ; anterior middle 

 of the mesothorax with a longitudinal impressed line abbreviated on 

 the disk ; scutellum with a few subobsolete, scattered punctures, the 

 tip rounded ; tegulae piceous. Wings fusco-hyaline, darker on the apical 

 margins ; posterior pair clearer; nervures dull ferruginous. Legs pice- 

 ous, clothed with blackish pubescence, the anterior tibia? rugose exte- 

 riorly. Abdomen short, broad at base, gradually narrowed to the tip 

 which is obtusely pointed and somewhat recurved; the basal segment 

 above thinly clothed with short black pubescence, larger and thicker 

 on the sides; remaining segments above naked, smooth, polished and 

 indistinctly punctured, the apical margins depressed on each side and 

 sometiiues pale piceous ; apical segment opaque dark fuscous, obtuse- 

 truncate at tip ; ventral scope black, long and dense. Length 6 lines ; 

 expanse of wings 11 lines. 



Collection — Ent. Soc. Philad. Two specimens. 

 Closely allied to M. morio Smith, and M. xylocopoidcs Smith, but 

 distinct from both species by the punctation being much less dense. 



Genus CERATINA. Latr. 

 Ceratina cyaniventris. n. sp. 



Bright metallic-green, polished; abdomen deep blue; wings subhyaline, iri- 

 descent. 



Female. — Head bright metallic green, slightly tinged with bluish in 

 certain lights, deeply and rather closely punctured, slightly pubescent ; 

 clypeus sparsely punctured with a conical whitish mark on the disk, 

 the anterior margin truncate and blackish; antennre piceous. Thorax 

 bright metallic green, slightly tinged with bluish in certain lights, 

 closely and distinctly punctured, sparse on the disk of the mesothorax. 

 which is tinged with golden-green and has four, indistinctly impressed. 



