150 THE CANADIAN ENTOMOLOGIST. 



valve also is not bilobed. In the female of Robertson's "liirticeps," 

 the basal process of labrum is low. broad and rounded (semi- 

 circular, Robertson expresses it), which does not agree with 

 vidua or errans. Robertson's insect will therefore need a new 

 name, as follows : 



Andren a Carlini, n. n., Ckll. 

 Andrena bicolor (not of Fab.), Rob., Tr. Am. Ent. Soc, XVIII., 51. 

 Andrena vicina (not of Sin.), Rob., Tr. Am. Ent. Soc, XXII., 1 18. 

 Andrena /iirticej>s (not of Sm.), Rob., Trans. Acad. Sci., St. Louis, 



X, 47- 

 The true A. hirticeps is a northern species, from Hudson's Bay. 

 A. Carlini is from Illinois ; type locality, Carlinville. It also 

 occurs in Kansas, N. Y. and N. M. (see below). 

 Andrena algida, Smith, 1853. 

 o*. "Tubercle truncate; apical ventral valve o; antennal joint 3 

 about =5, slightly longer than 4; area (longitudinally) somewhat 

 rugose ; abdomen tessellate and also delicately punctured." Type 

 locality, Hudson's Bay. The $ is rather suggestive of Carlini, 

 except as to the tubercle. 

 The 9 described by Smith is not at all like Carlini. 

 Andrena nubecula, Smith, 1853. 

 $ . " Tubercle emarginate ; area shortly rugose at base ; abdomen 

 tessellated, impunctate ; a pretty insect, with broad white bands 

 and pale reddish-yellow apex; antennal article 3 scarcely =4 + 5 

 (cf. proximo, or dorsata)." " Wings remarkably clouded." 

 I have this from Lincoln, Nebraska, collected in August and 

 September, sent by Prof. L. Bruner (No. 12). Smith's description 

 of the abdomen is inaccurate as regards the punctuation. 

 Andrena obscurifiennis, Smith, 1853. 

 % . " Tubercle convexly truncate ; abdomen closely punctured ; area 

 bordered with raised ridge, rugose but not very largely so, and 

 laterally only granulated; wings beautiful violet; pilosity rich red 

 (large grand species)." Type locality, Georgia. This has some 

 resemblance to A. Hallii, but is quite distinct. 

 Andrena perplexa. Smith, 1853. 

 V . " Tubercle truncate ; area seems nearly smooth, but dull, with fine 

 close tessellations ; abdominal segments smooth and closely 

 punctured, except towards their apices, which are rugulose." Type 



