APIDM. 317 



C. acuminata, "S^yl. — Difficult to distinguish from 

 elongata, but tlie c? has the apical teeth of the fifth set^fmont 

 more spinifortn, the upper apical spines of the sixth less 

 blunt and more divergent, the fourth ventral segment as 

 largely and remotely punctured as the third, armature with 

 the stipites longer than the sagittos which are less remote 

 at the apex. 



$ with the fifth abdominal segment destitute of an apical 

 fringe, the sixth rather longer and more pointed, the bauds 

 of the other segments more widely interrupted, fourth ven- 

 tral segment largely and clearly punctured, although 

 less coarsely than the third, the sixth segment is rather 

 longer, the constriction less marked and proportionately 

 nearer the apex. 



L. 12 mm. 



Rarer than the preceding, occurring in July and August. 

 Woking ; Chobham ; Hastings ; Deal ; Southwold. Nor- 

 wich ; (Bridgman). Bury St. Edmunds; (Tuck). Col- 

 chester ; (Harwood). Wallasey Sandhills ; (Gardner). 

 Plymbridge, Devon; (Blgiiell). Scotland; (Service). 



MEGACHILE, Latr. 



The bees of this genus are black, more or less densely 

 clothed with brown pubescence on the head and thorax, 

 and sometimes also on the abdomen, the head is large, 

 sometimes as wide as the thorax, eyes not hairy, mandibles 

 large, more or less flattened, and grooved, angularly pro- 

 duced at the base beneath in the c?, anteunic with the 

 apical joint more or less flattened, labrum elongate and 

 truncate, maxillae and mouth organs much as in Cwl>u.ri/s; 

 scutellum simple, not spinose ; wings with two submar- 

 ginal cells, abdomen truncate, and slightly emarginato at 

 the base, the sixth segment in the cJ terminating the 

 abdomen, and bearing a well-marked, transverse apical 



