212 Mr. E. Saunders' Synopsis of 



Beneath with the apical portions of the segments clothed 

 with long hairs. Legs black, covered with golden brown 

 hairs ; the tarsi more or less testaceous. Length 8 — 

 10 mm. 

 Hah. Common and generally distributed. 



12. Halictus albipes, Kirby. 



Kirby, Mon. Ap. Angl. ii., p. 71 ; Smith, Cat. Brit. 

 Hym.,'2nd ed., p. 89. 



This species is so closely allied to the last as to be dis- 

 tinguishable only by careful examination. 



It is generally smaller, and the pubescence of the 

 abdomen and legs is paler ; in the 3^ the face is much 

 longer, the metathorax longer, much less rugose, and 

 w'ithout the sharp reflexed truncature oi that of cijlindricus ; 

 the tarsi are entirely pale ; (for genitalia see pi. ix., 



fig. 8). 



The $ is more difficult to recognise ; the face is only 

 slightly longer, but the metathorax, looked at from in 

 front, is distinctly longer, its basal area less regularly 

 rounded, and the truncature below it narrower, less dis- 

 tinct, and with the lateral angles not reflexed. Length 

 7 — 9 mm. 



Hah. Common and generally distributed, often occur- 

 ring with cylindricus. 



13. Halictus malaclmrus, Kirby. 



Kirby, Mon. Ap. Angl. ii., p. 67 ; Smith, Cat. Brit. 

 Hym., 2nd ed., p. 88. 



^ . Black. Head finely punctured. Antennae pale 

 beneath ; face shorter than in either of the preceding ; 

 apex of the clypeus, labrum, and mandibles yellow ; 

 below the antennae covered with white hairs, above them 

 with scattered greyish brown hairs. Thorax not quite 

 so finely punctured as the head, but more closely and 

 evenly than in ci/lindricvs ; metathorax not truncate, dull, 

 longitudinally rugose at the base, the rugosities gradually 

 vanishing towards the apex ; basal area not defined. 

 Wings with their nervures pale. Abdomen dull, closely 

 and evenly punctured all over, the 1st segment hardly 

 less closely than the others ; the apex of each segment 

 narrowly testaceous, and all but the 1st clothed with a 

 very short greyish pubescence ; the 2nd and 3rd with an 



