Biological Papers. 137 



Family Anthophorid^e. 

 Anthophora walshii Cress. Oak creek, several specimens. 



two new species. Congress Junction. 

 Amegilla californica Cress. Oak creek, 2 specimens. 



cleomis Ckll. Oak creek, 4 specimens. 

 Clisodon terminalis Cress. Humphrey's Peak and Oak creek, 1 specimen in 



each locality. 

 Dasiapis ochracea Ckll. Several specimens. 

 Diadasia australis Cress. Tucson, 1 specimen. 



diminuta Cress. Oak creek and Bill Williams fork, several speci- 

 mens in each locality, 

 enavata Cress. Baboquivari, 1 specimen. 



rinconi Ckll. Bill Williams fork, Oak creek, and Baboquivari, 1 

 specimen each. 

 Tetralonia (Synhalonia) fuscotincta Ckll., new species. Oak creek, 1 speci- 

 men, 

 lippiae Ckll. Oak creek, 3 specimens, 

 lippiae, subspecies sublippise Ckll., new subspecies. 

 Oak creek. 1 specimen. 

 Xenoglossa patricia angustior Ckll. Congress Junction, 1 specimen. 



pruinosa Say. Oak creek, 1 specimen. 

 Melissodes agilis Cress. Oak creek, many specimens. 



agilis, var. subagilis Ckll. Oak creek, numerous specimens, 

 aurigenia Cr. Oak creek, numerous specimens, 

 communis Cress., var. Oak creek and Bill Williams fork, nu- 

 merous specimens, 

 confusa Cress. Humphrey's Peak, at base, several specimens, 

 duplocincta Ckll., new species. Bill Williams fork, numerous 



specimens; Tucson, 3. 

 epicharina Ckll., new species. Oak creek, 1 specimen. 



var. a. Oak creek, 1 specimen, 

 gilensis Ckll. Oak creek and Bill Williams fork, several speci- 

 mens; Tucson and Baboquivari, 2 each, 

 grindeliae Ckll. Oak creek, numerous specimens. 



var. Oak creek, 1 specimen. 



hexacantha Ckll., new species. Oak creek, 1 specimen. 



var. a. Oak creek, 2 specimens. 



var. b. Oak creek, 1 specimen. 



var. c. Oak creek, 1 specimen. 



intermediella Ckll., var. San Bernardino ranch and Oak creek, 



numerous specimens, 

 menuacha Cress. Oak creek and Humphrey's Peak, at base, 



many specimens, 

 montana Cress. Oak creek, numerous specimens, 

 nigrosignata Ckll., new species. Oak creek, 1 specimen. 



var. pallidisignata Ckll. Oak creek, 2 specimens, 

 pallidicincta Ckll. Bill Williams fork and Oak creek, several 



specimens, 

 praelauta Ckll., new^species. Oak creek, 1 specimen, 

 semitristis Ckll., new species. Oak creek, 1 specimen, 

 tristis Ckll. Oak creek and Tucson, several specimens, 

 tenuitarsis Ckll., new species. Oak creek, 1 specimen. 



