98 ENTOMOLOGICAL NEWS. [Mar., '04 



cence, sides closely, coarsely punctate ; abdomen dark honey-color, 

 where covered with pubescence appearing lighter ; broad apical margins 

 of segments pale testaceous ; abdomen closely and very minutely punc- 

 tate, covered, except disks of segments r and 2, with appressed yellow- 

 ish pubescence ; very rarely the medial segments stained with blackish ; 

 venter slightly darker than above. Length about 4 mm. 

 (^ unknown. 



Type locality : Clementon, N. J. 



Fifty specimens from New Jersey, as follows (H. L,. Vier- 

 eck, coll.) : Clementon : on trailing blackberry, June 6, 30 9 ; 

 June 2,2 9 ; on Rubus villosus, June 2 ; also (without flower 

 label) Apr. 17 ; May 9, 30. Riverton : Apr. 17,2 9 ; Apr. 

 23 ; May 9 ; on Solidago, Aug. n; on Monarda punda ta, Aug. 

 11,3 9 North Woodbury : June 13 ; on Helianthemwn cana- 

 dense, June 13. Shark River : July 7. Farmingdale : Juty 14. 

 Westville : April 19; July 21. Also, one specimen received 

 from Mr. E. S. G. Titus: East Marsh, D. C., Aug. 18, '03, 

 W. V. Warner. 



Dedicated to Mr. H. L,. Viereck, from whom I received the 

 excellent New Jersey series. 



Differs from the descriptions of any Halictus with reddish 

 abdomen and the clypeus anteriorly testaceous in the dense 

 covering of yellowish pubescence, as well as in the following 

 details : 



From crcberrimus in the clypeus greatly produced, antennae 

 darker beneath ; rugae reaching the apex of metathorax ; 

 abdomen without aeneous reflection. 



From inconspicuus in the metathorax not granulose, abdo- 

 men not smooth and shiny ; size larger. 



From testaccus in the metathorax closely punctate ; abdomen 

 punctate. 



From impurus in the mesonotum not smooth and polished 

 medially ; legs not polished ; smaller. 



From nymphalis in smaller size, finer punctuation of meso- 

 notum, color of abdomen ; lighter legs. 



Mesillcnsis is said to differ from nymphalis only in the bluer 

 color and punctate first abdominal segment ; so the differences 

 given for nymphalis can be applied to mcsillensis also. 



