ANTHIDIUM. 



491 



vertex; antenna filiform, the scape subclavate, the basal jointof 

 tlie fla'c^ellum subglobose ; labial palpi 4-jointecl, the 2nd joint 

 lon.-er than the 1st, the 3rd and 4th minute and articulated below 

 the^apex o£ the 2nd joint, both apical joints subclavate ; maxillary 

 palpi 2-jointed, basal joint short, cap-shaped. Thorax subglobose ; 

 scutellum produced back, overhanging the median segment, lunate, 

 sometimes wedge-shaped with the posterior margin transverse; 

 leo-s stout, the posterior tibiae and tarsi sometimes dilated ; wings 

 moderately broad and ample, the radial cell in the fore wme long 

 and narrow, the apex somewhat rounded, not closely approximate 



Fig. 162. — Anthidiiim. 1, labium ; Fig. 163. — Anthidium latipes, 5- f- 

 2, maxilla. (Much enlarged.) 



to the costal margin ; two cubital cells, the 2nd receiving the 1st 

 recurrent nervure near the base, the 2nd recurrent nervure inter- 

 stitial with the 2iid transverse cubital nervure, or sometimes 

 received beyond the apex of the 2nd cubital cell. Abdomen oblong, 

 sometimes conical, the base truncate, the apex broadly rounded 

 ( 2 ) and furnished with a dense pollen-brush, in the male emar- 

 ginate, dentate, and spined. The male, contrary to the general 

 rule in hymenopterous insects, nearly always larger than the 

 female. 



Key to the Species. 



A. Scutellum broad wedge-shaped, posterior mar- 



gin transverse. 



a. Black, with white pubescent spots on abdo- [p. 492. 



miual sei^uit'uts A. lachrymosnm, 



b. Black, with ytsUow non-pubescent spots on [p. 492. 



abdominal segments A.Jlavomaculatum, 



B. Scutellum lunate, posterior margin rounded. [p. 493. 

 a. Colours ferruginous and yellow A. pulchellum, 



