THE CANADIAN ENTOMOLOGIST. 



Most closely related to nelumbonis in the appearance of the metathorax, 

 but is easily separated from that species by the much finer punctuation of 

 the mesothorax. 



Dedicated to Mr. Charles Robertson, whose excellent descriptions 

 and notes on Illinois bees are of great value. 



Halidus Birkmamii^ n. sp., 9 • — Black, shiny, clothed with short, 

 glittering, white pubescence ; facial quadrangle about square ; face above 

 antennse with close but well-separated fine punctures ; clypeus and 

 mandibles ferruginous; antennte beneath, including scape, testaceo- 

 ferruginous, above dusky ferruginous \ mesothorax sericeously roughened, 

 finely, sparsely punctured \ metathorax finely irregularly rugulose, not 

 reaching apex, behind this roughened, as are the pleura ; tegulse, 

 tubercles and legs testaceous ; hind inner spur with five long teeth; wings 

 dusky, nervures and stigma dark brown ; abdomen shiny, apical margins 

 of segments narrowly testaceous ; segment one impunctate, bases of others 

 closely finely, punctured, becoming impunctate apicallv, the depressed 

 apical margins of segments transversely striatulate; bases of segments two 

 and three with white lateral hair patches. 



Length, 5 mm. 



Fedor, Texas, March 24, 1902. Rev. G. Birkmann collector. 

 -Easily distinguished from all the other black species by the testaceous 

 legs. 



This species is dedicated to the Rev. Mr. Birkmann, from whom it 

 was received. 



Halictus liiieattdus, n. sp., 9- — Head and thorax dark green or 

 blue-green ; face broad, above antennae closely, deeply punctate, below 

 antennce, including clypeus, very sparsely and more coarsely so ; clypeus 

 anteriorly purple, supra-clypeal area coarsely lineolate; antenme obscurely 

 ferruginous beneath ; cheeks very ample ; mesothorax shiny, coarsely 

 lineolate, lineolation very apparent, with scattered setigerous punctures ; 

 median groove well impressed, parapsidal grooves distinct ; scutellum 

 closely punctate, punctures irregular in size, with two smooth shiny spots 

 on the disc; base of metathorax not enclosed, with strong, coarse, irregular 

 longitudinal stride reaching apex only laterally; medially not quite reaching 

 apex, and tlie intervening space roughened ; mesopleura coarsely 

 roughened, metapleura finely so; truncation granulose, not surrounded by 

 a salient rim : wings hyaline, nervures honey-colour, stigma at times more 

 brownish : teguk« shiny dark brown ; legs brown^ hind inner spur with 



