328 HYMENOPTERA ACULEATA. 



corniculatKS, the burrows are formed in the sand. Little- 

 hampton ; Hayling Island. Deal; Land's End; Southend; 

 Weybridge; Burnham, Somerset ; (Smti/i). Chesil Beach ; 

 Lulworth ; Sandown ; (Dale). Exmouth; (Parfiit). 

 Hastings ; [Frishy). Ramsgate ; (Marshall). 



OSMIA. Panz. 



The various members of this genus differ very consider- 

 ably in structure^ especially in the (J sex. Tongue very 

 long, the paraglossse with an elongate sclerite along the 

 lateral margin of the basal portion and produced at the 

 apex into an elongate blunt process, labial palpi four- 

 jointed, the third and fourth very short, cylindrical and 

 divergent, maxillae rather long and narrow, their palpi four- 

 jointed, their basal scales well developed, submentum very 

 long and narrow, lora well developed, labrum elongate, 

 parallel sided, antennae in the ($ considerably longer than 

 in the ?, vertex in the ? often large and subquadrate; wings 

 with two submarginal cells, scutellum simple or dentate at 

 the sides ; abdomen short in the $ , with a ventral pollen 

 brush, its hairs simple; very variable in the <J, especially 

 in the form of the ventral segments, and in the number 

 exposed to view, anal opening inferior, armature with the 

 stipites very elongate, without laciniee, curved or angularly 

 bent inwards at the apex, hairy and sometimes dilated at 

 the bend outwardly, sagittae long and straight, convergent 

 at their apices, usually united by a membrane throughout 

 their length ; tarsi often aiiording useful characters in 

 the c?- 



This is a very extensive genus ; Schmiedeknecht (Apidas 

 Europae) enumerates no less than eighty-eight European 

 species, of which ten have occurred in this country, Smith 

 gives N. Africa, and North America as other habitats, and 

 remarks that the genus is confined apparently to temperate 

 climates. In diversity and ingenuity of habits Osmia stands 

 very high among the Apidw. Eufa, our commonest species, 



