HALICTUS. 215 



the centre of the third submarginal cell [a slightly diffe- 

 rent arrangement takes place in some of the species, 

 which will be noticed subsequently] ; the legs all setose, 

 but the setse not very long, and the posterior coxce and 

 trochanters have long hair beneath ; the claws bifid. 

 ABDOMEN ovate, the terminal segment with a longitu- 

 dinal linear incision in its centre. 



The MALES differ in having the antennae as long or 

 longer than the thorax; the labrum transverse, linear, 

 and the abdomen usually elongate and cylindrical, and 

 much longer than the head and thorax. 



NATIVE SPECIES. 



1. xanthopus, Kirby, $ $ . 4-5J lines. (Plate IV. 



fig. lc??.) 

 Lasioglossum tricingulum, Curtis. 



2. quadricinctus , Fabricius, J $ . 4-4^ lines. 

 quadricinctus, Kirby. 



3. rubicundus, Christ. < ? . 4-5 lines. 

 rubicundus, Kirby. 



4. cylindricus, Fabricius, $ $ . 3-5 lines. 

 malachura, Kirby. 



fulvo-cincta, Kirby. 

 abdominalis, Kirby. 



5. albipes, Fabricius, ^ $ . 3-4 lines. 

 albipes, Kirby. 



obovata, Kirby. 



6. l&vigatus, Kirby, $ $ . 3-4| lines. 

 lugubris, Kirby. 



7. leucozonius, Schrank, $ . 3-4 \ lines. 

 leucozonius, Kirby. 



8. quadrinotatus, Kirby, ^ $ . 2-3 lines. 



9. sexnotatus, Kirby, $ $ . 



