216 Mr. E. Saunders' Synopsis of 



testaceous ; beneath and legs clothed with yellowish grey 

 hairs. Length 6 — 8 mm. 



Hah. Eeigate, Shere, Chobham, Worthing, Yorkshire, 

 Scotland, &c. 



Division IV. 



(2) 1. Abdomen impunctate, or nearly so . . . . Icevis. 

 (1) 2. Abdomen punctured. 



(6) 3. Puncturation of thorax remote, not very coarse ; 

 tiagellum of antennae pale beneath in ^ . 



(5) 4. Smaller ; antennaj of $ only just reaching to the 

 scutellum ; puncturation of thorax in the J 

 exceedingly fine . . . . . . . . . . brevicornis. 



(4) 0. Larger ; anteunie of the ^ reaching to the meta- 

 thorax ; puncturation of thorax in J not 

 very fine . . . . . . . . . . . . villosulus. 



(3) 6. Puncturation of thorax very coarse, giving it 



almost a rugose appearance ; ^ with the fla- 



gellum entirely black . . . . . . . . puncticollis. 



17. Halictus villosulus , Kir by. 



Kirby, Mon. Ap. Angl. ii., p. 62 ; Smith, Cat. Brit. 

 Hym., 2nd ed., p. 91. 



Black ; the tarsi of the 3' generally pale, but often 

 dark outwardly. 



Head closely and finely punctured ; the face belowthe an- 

 tennae in the 3' covered with silvery hairs. Vertex of the 

 head and the thorax in both sexes sparingly clothed with 

 long brownish grey hairs. Antenna of the 3 reaching to 

 about the metathorax, pale beneath ; in the ? only 

 more or less rufescent towards the apex. Thorax very 

 smooth and shining in both sexes, sj^arsely and shallowly 

 punctured, the puncturation rather closer towards the 

 margins. Metathorax rounded posteriorly in the 3 , 

 somewhat truncate in the ? , radiately rugose at the 

 base ; surface beyond the rugosities shining. Abdomen 

 in the 3 shorter and more ovate than in most of the 

 species, shining, finely and regularly punctured on all 

 the segments ; sides and apex of the body covered with 

 grey hairs ; in the ? with the basal segment impunctate 

 or nearly so ; the following ones finel}^ punctured and 

 clothed with grey hairs ; margins of all the segments 

 narrowly testaceous. Abdomen beneath clothed with 

 long grejdsh hairs in both sexes. Legs with greyish 

 yellow hairs ; (for 3 genitalia see pi. ix., fig. 15). Length 

 7 — 8 mm. 



Hah. Very common on Crepis and other yellow Com- 

 positse. 



