NORTH AMERICAN BEES. 191 



P. affinis by Provancher. They have dark tegluss as in the 

 N. H. form. 



(4.) P. zizim, Rob. One male. Toronto. U. S. N. M. Marked 

 modestus. 



(5.) P. modesta, Say. Two males. Col. Coquillett. U.S.N.M. 



Michigan. — Mr. Baker sent me a male modesta (determined 

 by Fox as affinis) from Agricultural College, Mich. 



Maryland. — In Coll. Am. Ent. Soc. is a male antennata, with 

 face-markings white, tegulse wholly dark. The type-locality of 

 the species is New Jersey. It is very close to the male of 

 varifrons, but there is less light colour on the scape, and the 

 face-marks are not yellow. The face of varifrons, however, is 

 sometimes very pale, so that I have thought it probable that the 

 two names represented in reality but one species. If so, anten- 

 nata will stand for all the eastern forms referred herein to it and 

 varifrons, in which the tegulse lack a light spot, and will consti- 

 tute a geographical race. The type-locality of varifrons is 

 Colorado. There is also in Coll. Am. Ent. Soc. a female of 

 varifrons with dark tegulse, or antennata; and a female of 

 modesta. 



District of Colubibia. — The U. S. N. M. contains a female 

 zizice from the City of Washington, August 22nd, 1883, through 

 C. V. Riley. 



Virginia. — The National Museum contains four examples 

 from Virginia. Two, collected June 12th, 1881, are female 

 modesta; one, dated June 25th, 1882, seems to be a ziz'ne, but 

 the head is missing ; the fourth, dated June 27th, 1880, is a 

 male pennsylvanica. The last species could be taken for modesta, 

 did not one observe the strong punctuation of the first; abdominal 

 segment. 



Georgia. — Here we meet with a series of species entirely 

 different from those of the N.E. States. From males in Coll. 

 Am. Ent. Soc. I have described three new species — georgica, 

 triangularis, and labiatijrons. The same collection also contains 

 two males of P. divergens, which was described from an altitude 

 of 7000 feet in Colorado ! By the face- marks this is much like 

 georgica, but the first abdominal segment is strongly punctured, 

 in the manner characteristic of western species, whereas in 

 georgica it is minutely tessellate and practically impunctate. I 

 cannot help suspecting that the locality-label on these two 

 divergens is erroneous, though it is by no means impossible that 

 it may be correct. 



A number of female Prosap is from Georgia, in Coll. Am. Ent. 

 Soc, have given me some trouble. Three I referred to Jioridana, 

 Rob. ; but a renewed examination, and comparison with one of the 

 types of Jioridana, kindly lent by Mr. Robertson, indicate that this 

 is probably an error. One of the three is distinct from the other 



