lviii Mr. F. Smith's 



labrum white ; the antennae piceous beneath. Thorax, the^ tubercles white ; a minute 

 white spot at the base of all the tibiae ; the apical joint of all the tarsi ferruginous ; 

 the wings subhyaline ; the tegulae piceous. Abdomen clavate, of a dark brownish 

 black ; the margins of the segments piceous. 



This insect is in the cabinet of British insects at the British Museum. It has a 

 ticket attached, No. 236 : on referring to a manuscript catalogue of Dr. Leach's an 

 entiy was found, — " June 4th," (1829?) " 236, taken in Tothill Lane," Devonshire ; 

 and as I have had the pleasure of confirming some of the doubtful Hymenoptera in 

 the national collection to be indigenous, I include this insect in my descriptions. 



Megachtle odontura. 



Male. — (Length 4£ lines). Black, punctured: head, the face densely clothed 

 with a rich fulvous pubescence ; the mandibles fringed beneath with long pale hairs. 

 Thorax, above thinly, and more densely on the sides, clothed with fulvous pubescence ; 

 the wings hyaline, slightly clouded at their apical margins ; the nervures ferruginous ; 

 the femora beneath fringed with long pale fulvous pubescence; the anterior tarsi 

 simple, ferruginous ; the apex of the basal joint, the second and third palest ; tips 

 of the claws black ; the apical joint of the intermediate and posterior tarsi ferruginous ; 

 the tips of the claws black. Abdomen elongate, obtuse at the apex ; the two basal 

 segments thinly clothed above with fulvous pubescence ; the margin of the segments, 

 first to the fifth have a narrow band of short pale fulvous pubescence, attenuated in 

 the middle ; the margin of the sixth segment has a row of short teeth, and the seventh 

 is incurved and produced into a sharp conical spine. 



This bee is also in the British Museum. No. 262 of Leach's manuscript cata-. 

 logue : the entry is " June, found settling on a footpath near our house." Spitch- 

 wick ? 



OSMIA PURPURASCENS. 



Male. — (Length 4f lines). Entirely of a violet-blue, finely punctate : head, the 

 face, cheeks and mandibles fringed with long griseous pubescence ; the mandibles 

 and antennae black ; the joints of the latter slightly arcuate, as long as the head and 

 thorax. Thorax, thinly above, more densely on the sides and beneath, also the ante- 

 rior femora beneath, clothed with a long griseous pubescence ; the legs black ; the 

 claws ferruginous ; wings hyaline, very slightly clouded at their apical margins. Ab- 

 domen, the two basal segments clothed with long, erect, griseous pubescence ; that 

 on the remaining segments is short and black ; the apical segment entire. 



Also in the British Museum. Captured by Mr. Bydder, — probably in the New 

 Forest. 



HALICTUS GRAM1NEUS. 



Female. — (Length 3£ lines). Light green, finely punctate : head, the apical joints 

 of the antennae testaceous beneath ; a short, thin, griseous pubescence on the face ; 

 that on the vertex fulvous, as it is also on the disk of the thorax : the metathorax is 

 of an olive-green ; the wings splendidly iridescent, their nervures and tegulae testa- 

 ceous ; the anterior tibiae, the intermediate and posterior at their base, and all the 

 tarsi, testaceous: claws ferruginous. Abdomen clothed with a thin, short, rufo- 



