32 PSYCHE [April 



angle which is ^till more marked and ahnost dentiform, when viewed laterally. This 

 is most distinct in the females of bipustulatus." 



I have none of the former species, but my few females of the latter show very 

 clearly the above characters as he describes them. 



In connection with this subject, attention is called to an error in the Rhjnicho- 

 phoridae of America North of Mexico, LeConte and Horn, p. 10; under Aitelahus 

 analis the sex marks should be reversed in the description of the sexual characters. 

 Also in the Family characters on the same page the statement "armed at the tip with 

 two strong hooks" is misleading and should be cpialified, because this, as it now reads, 

 applies only to the females and not to the males which have only one hook. This lat- 

 ter statement appears also in the "Classification" and should be restricted likewise. 



THE HALICTIDAE OF SOUTHERN MAINE. 



BY JOHN H. LOVELL, WALDOBORO, MAINE. 



While comparatively few new species of bees have been found in southern 

 Maine, the described species very frequently difYer in a greater or less degree from 

 southern and western material. This is especially true of the species of Halictus, 

 which present variations in the descriptive characters in consequence of which it is 

 difficult in many instances to determine whether they are of varietal or specific impor- 

 tance. H. provancheri D. T. exhibits only slight differences, but the female of H. 

 lerouxii Lep. is narrower than the Illinois representative of this species, and has the 

 pubescence of the thorax above ochreous instead of grayish-white. H. craterus is a 

 nevv' species allied to H. similis and H. discus. H. arcuatus var. parisus, especially 

 the male, differs so widely from tA'pical material that it might well be regarded as a 

 new species. The local specimens of H. foxii closely resemble the Illinois form and 

 at most constitute only a race; while H. divergens sustains a nearly similar relation 

 to H. quadrimaculatus. Maine specimens of H. pilosus are usually smaller than those 

 from Indiana; while H. pilosus var. leucocomus occupies an intermediate position 

 betv%een this species and H. pruinosus, and is usually mistaken for the latter species. 

 H. hortensis is near to H. sparsus, but it may be separated from specimens of the 

 latter species received from Pennsylvania by its larger size, and in the female by the 

 broader and lighter-colored abdomen, and in the male by the more coarsely striated 



