ZOOLOGY 10] 



O. hypochry searohweri, Gkll. Common on Phacelia and 

 Astragulus caryocarpus from April 7 to May 5. 



O. Integra, Cress. Less common on the same plants at the 

 same time. 



O. neo-mexicana. On Biscutella and one on cherry. One was 

 observed to kill an individual of the next species in a quarrel 

 over an early bloom. 



** O. watsoni, Gkll. Type locality. Taken on Biscutella 

 and Phacelia but most abundant of all bees on Astragulus sp. 

 the first week in April 1911. Mar. 28. April 25. 



Spinoliella australior On Phacelia corruga and cherry. 



Tetralonia lycii. Most abundant on Astragulus ca-yocarpus 

 but some on Phacelia corruga and Astragulus mollissimus. Mar 

 25 to Aug. 29- One in Valley. 



** T. phaceliae, Gkll. Type locality. On Phacelia corruga. 

 April. 



Ichneumtidea abdomnalis, Cress. 



HEMIPTERA 



Apiomerus pictipes. Common also in the Valley and up 

 into the Pinon Assn. of the mountains but especially abundant 

 here on Ghrysothamnus. 



A. spissipes, Say. Same. 



Phymata erosa fasciciata. Very abundant here on Ghryso- 

 thamnus and in Valley on Solidago, in the yellow blossoms of 

 which it is almost perfectly concealed. Not nearly so well 

 hidden on Groton texensis&nd Artecmesia on the mesa and quite 

 conspicuous on the white blossoms where it also occurs 

 but less commonly. In connection with the theory of agres- 

 sive resemblance it is to be observed that the instincts of 

 this species, and I suspect it is general, lead it to usually 

 select blossoms of its own color in which to conceal itself, 

 but by no means invariably so. 



P. wolfii, Less common. One had a honey bee as victim. 



Prunassis venosa, Vhl. A few taken. The young of this 

 cicada live on the roots of the prickly pear cacti. 



Cicada cinctifera, Uhl. With the last. 



LEPIDOPTERA 



Calosesia coccinella. Exceedingly abundant on Hymeno- 

 pappus during the third week in May. Less abundant on 



