114 Dr. Reinhold Meyer: 



a compact and easily recongnized group of species. In his generic 

 diagnosis Smith says that 'che first r. n. always meets the second t. c. ; 

 but this is not invariably the case. So far as I know. the hind spur of 

 the female is always without spines or teeth." 



Parasphecodes muß sicher als Untergattung zu Halictus gezogen 

 werden. 



Die Arten sind auf Australien und Tasmanien beschränkt. 

 Cockerell hat nach den Smith" sehen Typen folgende Tabelle 

 aufgestellt, die ich zur Ergänzung seiner Arten mitaufführe. 1 ) 



O- 



First r. n. entering basal corner of third s. m. ; size smaller; ab- 

 dornen red. with only the apex slightly blackish; flagellum entirely 

 black sulthica, Sm. (T.) 



First r. n. entering second s. m. not far froni its end 1 



1. Flagellum ferruginous beneath. size rather large; a black cloud 

 on third abdominal segment and Segments -i to 6 all black: area 

 coarsely wrinkled altkhm. Sm, (T.) 

 Flagellum entirely black 2 



2. Area rugose- granulär: middle femora very dark stuchila. Sm. (T.) 

 Area lon^itudinallv plicate: middle femora clear red 



hilactus, Sm. (T.) 



First r. n. entering second s. m. near apex; red of abdomen quite 

 bright : area often without longitudinal ridges or wrinkles 1 

 First r. n. meeting second t. c. : red of abdomen darker or duller: 

 area with longitudinal ridges or wrinkles 3 



1. Abdomen red. only faintly blackened apically: area dull, without 

 distinet wrinkles or ridges: hind spur simple: second s. m. higher 

 than broad lithusca, Sm. (T.) 

 Abdomen with segments 1 to 3 red. 4 and 5 black 2 



2. Smaller; red of abdomen very bright. hind margins of segments 

 1 and 2 darker; clypeus with few large punetures on a shining sur- 

 face: mandibles strongly dentate; hind spur simple: second s. m. 

 about as high as broad tuchilus, Sm. (T.) 

 Larger red of abdomen darker. chestnut coJour hind margins 

 of segments 1 and 2 not darkened: area with a delicate raised 

 sculpture; hind spur simple; second s. m. very broad, bröader 

 than high, and nearly as large as third lichatus, Sm. (T.) 



3. Larger: abdomen shining very dark chestnut. blackened apically: 

 ridge behind area very prominent: second r. n. and third t. c. 

 niueh weakened tüaehus, Sm. (T.) 

 Smaller: abdomen not so dark 4 



*) s. m. = Submarginalzelle. t. c. = transverso-enbital-Nerir. r. n. = rück- 

 aufender Nerv. 



