British Hymenoptera. 193 



with a very distinct line of silvery hairs on each side at 

 the apex ; the following segments finely punctured, each 

 with a grey pubescence at the sides, almost forming 

 an apical Ijand ; genitalia with the stipites short and 

 fringed with long hairs at the apex ; no projecting spoon- 

 like process. (See pi. vii., fig. 8.) 



? very like that of hyalmata, and probably in many 

 collections mixed with it ; but it has the antennse 

 entirely black, the thorax wider across the middle, and 

 the apical segments irregularly and indefinitely punc- 

 tured ; whereas in hi/alinata the puncturation is fine 

 but distinct. Length 6 — 7 mm. 



Hah. Flowers of brambles, &c. ; Chobham, Hastings, 

 Guildford, Eeigate, &c. 



8. Prosopis hrevicornis, Nyl. 



Nyl., (Suppl.), Not. Sails. Faun. Flor. Fenn., Forh. ii., 

 p. 95 ^perforator, Smith, Cat. Brit. Hym., 2nd ed., 

 p. 13. 



Rather smaller than either of the preceding. Black, 

 with the flagellum of the antennae more or less fulvous 

 beneath ; the face below the antennse in the <? , a spot 

 on each side of the face in the $ bordering the eye 

 (often absent), the anterior tibiae in front in the g- , and 

 the posterior tibiae at the base in both sexes, white ; the 

 white colour of the face extending above the antennse at 

 the side ; basal joint of the intermediate and posterior 

 tarsi white in the 3" • 



Head and thorax deeply punctured. Vertex of the 

 head squarer than in the other species, especially in 

 the ? . Scape of the antennse in the ^ very much 

 swollen towards the apex, in form like an inverted cone ; 

 in the ? simple. Thorax dull, punctured like the head. 

 Wings slightly dusk5^ Abdomen dull and closely punc- 

 tured in the <? , shining, very finely and remotely punc- 

 tured in the ? ; both sexes with a very indistinct lateral 

 line of silvery hairs at the apex of the basal segment. 

 (? genitalia with the stipites simple and somewhat 

 pointed, with long apical hairs ; the sagittae dentate on 

 their inner margin near the base. (See pi. vii., fig. 6.) 

 Length 4^ — 5^ mm. 



Hah. Hastings, Eeigate, Southwold, Chobham, &c. 

 Not rare. May be bred from bramble-stems. 



TRANS. ENT. SOC. 1882. PAET II. (.JULY.) 2 C 



