25G THE ENTOMOLOGIST. 



11. Halictus QUADRINOTATUS. 



Melitta qnadrinotata, Kirhy, Moa. Ap. Angl. ii. 79. 



Plalictus quadrinotatus, Bridle, Exped. de Moree, iii. 350 ; 

 Smith, Brit. Bees, p. 29 ; Nyland. Revis. Apum 

 Boreal, p. 240. 



HylsBUS 4-notatus, Schenck, Bees Nassau, p. 266. 



The female has a resemblance to that sex of H. sexnota- 

 tus, but is only a diminutive representative, being three lines 

 long, whilst the former insect is five ; the abdomen has only 

 four white spots, placed laterally on the basal margins of the 

 second and third segments • the abdomen is finely and 

 closely punctured, but very black and shining : when the 

 insect is in very fine condition the two apical segments are 

 covered with short decumbent griseous down. The male has 

 also four white spots on the abdomen, but these are only 

 found on veiy recently disclosed specimens ; all the tarsi are 

 white, with the claw-joint ferruginous; the face covered with 

 griseous down ; the antennae shorter than the thorax ; and 

 the tip of the clypeus, as well as the labrum, while. The 

 species is found in all parts of the country and throughout 

 Europe. 



12. Halictus cylindricus. 

 Hylaeus cylindricus, Fabr. Ent. Syst. ii. 302, male ; Schenck, 



Bees Nassau, p. 274. 

 Hylajus abdominalis, Panz. Faun. Germ. 53, 18, male. 

 Melitta abdominalis, Kirhy, male, and M. fulvocincta, fe- 

 male, Mon. Ap. Angl. ii. 73 and 68. 

 Halictus fulvocinctus, Nyland. Ap. Boreal, p. 199. 

 Halictus cylindricus. Smith, Brit. Bees, p. 30, male, fe- 

 male ; Nyland. Revis. Ap. Boreal, p. 242. 

 Hylseus abdominalis, Schenck, Bees Nassau, 267. 

 An extremely abundant insect in all parts of the country, 

 and is found in France, Germany, Switzerland, Denmark, 

 Sweden, Finland and Siberia. 



The male is very variable in colour ; some have the three 

 basal segments of the abdomen red, the apical ones being 

 black ; the red segments are more or less marked with black ; 

 many examples are entirely black, with the margins of the 

 segments more or less testaceous. 



