Studies of North American Bees 21 



Anthidium maculosum Cresson. 



1878. Anthidium maculosum Cresson, Trans. Am. Ent. Soc, VII, p. 



no, ?. 



1900. Anthidium maculosum Cockerell, Ann. Mag. Nat. Hist., series 7, 



V, p. 412, c?. 



Cresson described this species from two female cotypes, one of 

 which was from CaHfornia and one from Utah. Before the 

 writer are two typical females, from two additional states ; one 

 from Colorado Springs, Colorado, and one from Custer, South 

 Dakota. Cockerell has recorded the species from New Mexico, 

 also. 



Anthidium califomicum Cresson. 



1879. Anthidium califomicum Cresson, Trans. Am. Ent. Soc, VII, p. 



206, c?. 



1901. Anthidium califomicum Fowler, Rept. Univ. of California Exp. 



Sta., pp. 324-325, ? c?(??). 

 1904. Anthidium califomicum Cockerell, Bull. Sou. Cal'forn'a Acad. 

 Set., Ill, pp. 57 and 59, 3- 



A series of two females and three males from Pacific Grove, 

 California, July, 1894, is before the writer. A fourth male with- 

 out locality data is probably from California, and is labelled 

 "June 30, 1892 (B)." These males agree with Cresson's de- 

 scription of the two male cotypes, and run to califo^nicum in 

 Cockerell's table, where the characters of the species are deter- 

 mined from five males from Los Angeles, so that with little doubt 

 all are conspecific. The female assigned to califomicum by 

 Fowler, however, agrees more closely with A. transversiim, 

 described above, but almost certainly is not the female of A. cali- 

 fomicum. The females before the writer, taken in company with 

 male califomicum, agree with the males except that the clypeus 

 is black or has two very small lateral yellow clypeal dots sub- 

 confluent with two similar dots on the sides of the face, and the 

 mandibles are black. The mesoscutum and mesoscutellum are 

 black without any maculations whatever. The males of calif or- 

 nicum before the writer all have black tubercles, while the yellow 

 markings on the basitarsi are quite uniform, so that they prob- 

 ably represent a different species from the males determined as 



21 



