694 Insects. 



appears early in June, but is more local than either Willughbiella or 

 centuncularis. 



Sp. 4. Megachile ligniseca. 

 Apis ligniseca, Kirby's Mon. 



Female. — Length 7 — 8 lines. Black. The face has a patch of 

 pale yellow hairs at the margin of the eyes, below the base of the an- 

 tennae ; the cheeks are clothed with hair of the same colour ; the ver- 

 tex with a few scattered brown hairs : the mandibles are large, quad- 

 ridentate, the two inner teeth obtuse. The thorax is clothed with 

 pale yellowish brown pubescence, darkest above. The abdomen is 

 oblong-ovate, the two basal segments have a thin pale pubescence, 

 there are also at the extreme lateral margins of the segments, a few 

 pale hairs ; beneath, the basal segments are clothed with fulvous, and 

 the two apical ones with dark brown pubescence. 



Male. — Length 6 — 7 lines. Black. Face densely clothed with a 

 rich yellow pubescence, black on the vertex ; the cheeks are clothed 

 with pale yellow hair ; antennae filiform. The thorax has a pale yel- 

 lowish brown pubescence, rather darkest above. The anterior coxae 

 are unarmed. The abdomen is oblong-ovate, a little narrowed towards 

 the base, the two basal segments have a thin pale pubescence, and the 

 extreme lateral margins of the second, third and fourth segments have 

 a narrow fascia of white hairs, the sixth segment is emarginate, the 

 seventh entire ; margins of the segments beneath piceous. 



This is the largest of the genus ; its size will easily distinguish it ; 

 the form of the abdomen is the most striking character. The male is 

 easily distinguished by its size and the entire ventral segment. This 

 species appears rather local ; I have only met with it in Battersea- 

 fields, but it appears to be plentiful in some districts. 



Sp. 5. Megachile fasciata, Smith. 



Female. — Length 6 lines. Black. Face clothed with a rich yel- 

 low pubescence, dark brown on the vertex. Thorax also clothed with 

 rich yellow pubescence, as well as the legs. The abdomen has bright 

 rich yellow pubescence, on the first segment forming tufts laterally, 

 and on the second, third and fourth segments a narrow fascia of short 

 hair of the same colour on their margins ; clothed beneath with a 

 rich golden pubescence. 



The first specimen which I saw of this species, was sent to me by 

 a friend residing at Bristol, who informed me that he believed it was 

 captured near Southampton. This season I had the good fortune to 



