222. 



OSMIA PARIETINA. 



Order Hymenoptera. Fam. Apiariae Lat. Apidae Leach. 



Type of the Genus Apis bicornis Linn. 



OsMiA Panz., Spin., Lat., Leach. — Andrena Panz. — Megachile Lat. 

 — ^Trachusa Jur. — Hoplitis 8; Amblys Klug. — Anthophora Fab. 

 — Apis Linn., Kirby, Panz. 



AntenncB inserted at the middle of the face, not approximating, 

 long filiform and 13-jointed in the males, basal joint pilose, 

 scarcely longer than the 4th, 2nd minute, 3rd short cup-shaped, 

 the remainder of nearly equal length, each being slightly curved, 

 terminal joint attenuated (la): shorter geniculated cylindric, 

 and subclavate in the females, composed of 12 joints, basal joint 

 pilose very long, 2nd minute, 3rd longer and more slender than 

 the following, vv'hich are quadrate, excepting the last which is 

 longer and rounded at the apex (I). 



Labrum elongate-quadrate, dilated at the base, rounded and 

 slightly emarginate and ciliated at the apex (2). 

 Mandibles externally pilose, small and deeply notched at the 

 apex in the males (3 a) ; large elongate-quadrate, truncated 

 obliquely and sinuated at the apex in the females (3). 

 Maxillce as long as the lip in the female, horny at the base, ter- 

 minated by a long membranous sublanceolate lobe pubescent at 

 the inner margin and apex (4 a). Palpi pubescent more robust 

 in the female than male, 4-jointed, basal joint the largest, oval, 

 2nd and 3rd longer, of equal length, 4th shorter, subclavate (b). 

 Mentiim elongated horny. Palpi 4-jointed, basal joint long, 2nd 

 twice as long attenuated, 3rd very short clavate-truncate, 4th a 

 little longer and slenderer (5 b). Tongue much longer than the 

 palpi in the male (c), very pubescent externally, hollow, trans- 

 versely striated ; down the centre apparently runs a tube which 

 is terminated by an expanded orifice. Paraglossce short, slightly 

 pubescent, dilated at the base (d). 

 Males smaller than the females. Head very large in the latter sex. 

 Ocelli 3. Wings like those of Megachile. Abdomen ovate, convex, 

 thickly pubescent beneath in the female. Tarsi 5 -jointed, basal joint 

 the longest and most robust, especially in the female, 3 following 

 short, 5 th longer. Claws deeply bifid in the males. (8 fore leg of 

 the female). 



Parietina Nob. 



Female. Dull aeneous green ; head and thorax thickly and mi- 

 nutely punctured, the former producing hoary, the latter bright 

 ferruginous pubescence. Abdomen very glossy, obscurely punc- 

 tured, slightly pubescent, ferruginous at the base, underside 

 clothed with black pubescence. Wings with a fuscous fimbria. 

 Legs producing a little hoary pubescence, that of the tarsi fuscous. 



In the Author's Cabinet. 



