APID .«■. 307 



L. 5.8 mm. 



Deal; Falmouth; Chobham ; Wokin^. Shiere ; {Dr. 

 Capron). Colcliester ; (Harwood). Isle of Wight; (Cham- 

 jnon). Parley Heath; {Dale). Budleigh Saltertou ; {Smith). 

 Norwich; {Bridgman). 



CERATINA, Latr. 



A genus of small, nearly glabrous, shining metallic bees of 

 which there is only one British species. The labial palpi are 

 four-jointed, having two small deflected cylindrical joints at 

 the apex, maxillary palpi six-jointed, labrum transverse, lora 

 well developed; antennaj short; thorax nearly round, wings 

 with three submarginal cells, the marginal cell rounded at 

 the apex, abdomen subclavate, c? with the anal orifice 

 inferior, the seventh dorsal segment having a ventral aspect, 

 five ventral segments exposed in the (J, the extreme 

 apex only of the sixth being visible, genital armature 

 subquadrate, with the sides of the stipites straight and 

 subparallel, their laciniiB bent inwards at a distinct angle, 

 sagittse very far apart, converging towards the apex like the 

 stipites, spatha large and membranous, covering the basal 

 half of the sagittse. After careful dissecting I have been 

 unable to detect any distinct seventh ventral segment in the 

 (J, the eighth appears to be membranous at the apex, and 

 is recognizable by the central basal prolongation, I can 

 only imagine that the sixth and seventh have become united 

 into one. These little bees, of which there are several con- 

 tinental species, nidificate in bramble stems or in the hollow 

 stems of other plants, they are allied to the large Xijlocopa 

 so well known on the Continent, the ? has no distinct 

 pollen brush. 



C. cyanea, Kirhy. — Blue, shining, almost glabrous, 



largely punctured, clypcus and labrum in the ^ white, 



antennaj black or piccous, mesonotum shining less 



brightly blue, and less closely punctured than the head ; 



X 2 



