6. HALICTUS. 87 



Blackwater, Hants, and once at Weybridge ; the male has not been 

 found in England. Professor Schenck has forwarded both sexes 

 from Nassau. He considers the male to be the H. interruptus of 

 Panzer ; but, in my opinion, it is certainly distinct from the H. inter- 

 ruptus described in this work. The male here described is that sent 

 by Professor Schenck. 



10. Halictus interruptus. 



H. ater ; abdomine cylindrico, basi rufa, segmentis margine basi 

 utrinque niveo-albis. 



Halictus interruptus, Smith, Zool. vi. 2107 c?; Bees Great Brit. 43. 

 Hylreus interruptus, Pan z. Faun. Germ. 55. 4 rf. 

 Andrena interruptus, Panz. Krit. JRevis. 190. 



Male. Length 3 lines. — Black ; the face thinly covered with short 

 white pubescence ; the apes of the clypeus, the labrum, and man- 

 dibles yellow ; the flagellum fulvous beneath and fuscous above. 

 Thorax, the mesothorax shining and closely punctured ; the meta- 

 thorax rounded posteriorly and rugulose ; wings subhyaline and 

 iridescent; the nervures fusco-ferruginous, the tegulae testaceous ; 

 the b?se and apex of the tibiae and also the tarsi yellow. Abdo- 

 men oblong, cylindric, shining, and finely punctured ; the basal 

 segment red ; the second and third segments, and sometimes the 

 fourth, with an interrupted fascia of white pubescence at their basal 

 margins. B.M. 



There is a specimen of this insect in the collection of the British 

 Museum ; it has the locality Kingsbridge attached, where it was 

 probably taken by Dr. Leach. Professor Schenck believes this to be 

 the male of H. maculatus ; but on comparing a specimen forwarded 

 by him with the English one, I found them to be distinct. 



11. Halictus cylindricus. 



H. niger, rufescenti pubescens ; abdominis segmentis marginibus 

 fulvis, intermediis basi utrinque pallidis. Mas abdominis seg- 

 mentis anticis runs, macula media punctisque lateralibus nigris. 



Halictus cylindricus, Smith, Bees Great Brit. 30. 



Thorns. Opus. Ent. 309 ; Hym. Scand. ii. 140. 

 Hylseus cylindricus, Fabr. Ent. Syst. ii. 302 ; Syst. Piez. 319. 

 Hylseus abdominalis, Panz. Faun. Germ. 53. 18. 



Schenck, Nass. Bien. 207. 

 Melitta fulvocincUt, Kirby, Mon. Apum Angl. ii. 08 5 . 

 Melitta abdominalis, Kirby, Mon. Apum Angl. ii. 73 rf var. 

 Halictus fulvocinctus, Nytand. Notis. ur Siillsk. pro Faun, et Flo. 



Fenn. ii. 199. 

 Halictus abdominalis, Smith, Zool. vi. 2100. 



Female. Length 4-4| lines. — Black ; head and thorax closely punc- 

 tured, the face thinly clothed with short fulvous pubescence ; the 

 disk of the thorax is similarly clothed, more densely at the sides, 



