312 



NATURAL HISTORY BULLETIN. 



A. proclive Lec. Pinal Mts. 



A. varicorne Smith. Yuma. 



A. carinirostrum Fall. (MS.). Santa Rita Mts. 



Dinocleus denticollis Casey. Globe. The species of this genus are 



found about the roots of various weeds in sandy spots. 

 D. saginatus Casey. Tucson. 

 D. molitor Lec. Yuma. 

 Dorytomus iN/EQUALis Casey. Riverside. 

 Desmoris constrictus Say. Tucson. 

 Smicronyx rufulus Dietz. Riverside. 

 S. spurcus Casey. Tucson. 



Synertha imbricata Casey. Pinal Mts., Riverside 

 S. wickhamii Dietz. Riverside. 

 Endalus limatulus Gyll. Tucson. 

 Magdalis lecontei Horn. Pinal Mts. 

 Anthonomus sp. Yuma. 

 Tychius setosus Lec. Yuma. 

 T. hispidus Casey. Santa Rita Mts. 

 T. sybinioides Casey. Santa Rita Mts. The small western species of this 



genus are mostly found upon the various arborescent Leguminosse. 



characteristic of arid areas. 

 Conotrachelus seniculus Boh. Tucson. The name is from Dr. Horn. 

 Rhyssematus medialis Casey. Tucson. 

 Zygops seminiveus Lec. Foothills of the Pinal Mts. Common on the 



maguey, chiefly near base of flower-stalk. 

 Piazurus californichs Lec. Pinal Mts., Tucson, Yuma. 

 Copturus adspersus Lec. Yuma. 

 Tachygonus centralis Lec. Pinal Mts. 

 Onychobaris egena Casey. Pinal Mts. 

 O. ambigua Casey. Tucson. 

 O. mystica Casey. Foot hills of Pinal Mts., on a narrow-stemmed cactus. 



Globe. 

 Centrinus senilis Gyll. Santa Rita Mts. 

 C. hospes Casey. Tucson 



CALANDRID^E. 



Scyphophorus acupunctatus Gyll. Pinal and Santa Rita Mts., in ma- 

 guey stalks. 

 Rhodob/Enus tredectmpunctatus 111. Tucson. 

 Cossonus crenatus Horn. Pinal Mts., under pine bark. 



SCOLYTID^E. 



Platypus n. sp. Pinal Mts. 

 Pityophthorus nitidulus Lec. Pinal Mts. 

 Xyleborus xylographus Say. Pinal Mts. 

 Tomicus confusus Lec. Pinal Mts. 

 Dendroctonus terebrans Oliv. Pinal Mts. 

 Hylastes gracilis Lec. Pinal Mts. 



