ART. 9 DIGGER WASPS OF GENUS PODALONIA FERNALD 19 



below; last two or three segments black above and belovr, the extent 

 of the black varying somewhat; last ventral segment rounded acumi- 

 nate behind, with a broad central notch. 



Wings: Hyaline; veins dark brown; tegulae piceous, tinged more 

 or less with ferruginous outwardly. 



Legs: Coxae and trochanters black, more or less sericeous; fore 

 coxa with a tooth, as in female; inner portions of femora black, 

 outer portions ferruginous, the proportions varying; tibiae ferrugi- 

 nous, occasionally blackish at the outer end or with a black streak; 

 tarsi piceous, more or less sericeous, the spines and claws light. 



There are slight variations in the outline of the clypeal margin and 

 in the amount of ferruginous on the abdomen and legs in specimens 

 of this sex which I have examined. 



Length. — Females, 16-18 mm; males, 14-17 mm. 



Distribution. — The holotype of this species was taken at Tucson, 

 Ariz., April 5, 1924. I have seen eleven other females, all from 

 Southern California (place not given), ten of these in the collection 

 of the American Entomological Society and one in my own collec- 

 tion. The twelve males seen, also came from Southern California, 

 eleven being in the same lot as the females and one in my own col- 

 lection. This species should be found in Northwestern Mexico and 

 perhaps New Mexico also, at least. 



Types. — The holotype female, which I have studied, is in the 

 Division of Entomology collection of the University of Minnesota, 

 St. Paul. The allotype male (here described) is in the collection of 

 the American Entomological Society at Philadelphia. Two other 

 males used in preparing the description and which may, therefore, be 

 described as paratypes of the allotype, or parallotypes, are also in the 

 collection of the American Entomological Society. 



Cameron's species morrisoni was described from a male taken in 

 Northern Sonora, Mexico. The only specimen in the British Mu- 

 seum, which I could find, labelled ^'Ammophila morrisoni Cam. Type" 

 in Cameron's writing, is not a male but a female and does not agree 

 at all well with his description. It would seem probable that the 

 label may have been in some way attached to the wrong specimen, 

 which in 1913 was found with the group of specimens placed under 

 sonorensis, possibly in the belief of whoever placed it there, that the 

 two species are the same. 



The type of morrisoni being therefore not available for study, Cam- 

 eron's description only, remains for comparison with nicholi. It does 

 not agree in all points with the males of nicholi, but is still so similar 

 as to make it not unlikely that the two are the same species. The 

 locality of Cameron's species is not far from where nicholi has been 

 taken. 



