FALL AND COCKERELL. 



153 



Because of the conspicuous place which these southern genera 

 occupy in the fauna,' an entomologist arriving from the north or east 

 is very likely to assume that the Middle Sonoran of New Mexico 

 contains precisely the same elements as the Lower Sonoran of 

 Arizona just as it has been assumed that Florida is typically West 

 Indian, because its numerous West Indian genera attract attention, 

 and the absence of innumerable West Indian types is not so readily 

 observed. 



Since the Lower Sonoran of Arizona has such conspicuous vege- 

 table types not found in the Middle Sonoran — such as the giant 

 cactus, the palo-verde and the crown of-thorns, it is but natural that 

 it should also have its peculiar insects. No list wholly suitable for 

 comparison has been published, but Mr. Schwarz has permitted us 

 to make use of an unpublished list of species taken by Mr. Hubbard 

 and himself at Tucson, Arizona, and from this we give a moderately 

 long list of species not yei, reported from New Mexico. 



TUCSON, ARIZONA 

 CnemidotHS simplex Lee. 

 Laccophilus americanus Aube. 

 Deronecfes fequmoctialis Clk. 

 Hydroporus addendns Crotch. 



" axiUaris Lee. 



Emnicrus vestalis Csy. 

 Tropisternus sublsevis Lee. 

 Philhydrus fucatus Horn. 

 " carinatus Lee. 



Dactylosternum cadi Lee. 

 Pelosoma capillatum Lee. 

 Mcgasternum cerei Sz. 

 Pfomaphaqus fisus Horn. 

 Clambus gibbulus Lee. 



" puberulus Lee. 

 Hamotus elongatus Budl. 

 Trimium pmicticolle, Lee. 

 Maseochara semivelntina Solsky. 



" opacella Shp. 



" puberula Csy. 



Apheloglossa rnfipennis Csy. 

 Xanthopygus cacti Horn. 

 Belonuchus ephippiatus Say. 



■' xanthomelas Solsky. 



Actobius ocreatus Horn. 

 " eleganlulus Horn. 



TKANS. AM. ENT. SOC. XXXIII. 



(Hubbard and Schwarz). 

 Xaiitholinus dimidiatus Lee. 

 " pusiUus Saehse. 



Stenus zunicus Csy. 

 " alacer Csy. 

 " vestalis Csy. 

 Cryptobiiim pimerianuin Lee. 

 Lathrobium, lituarium Lee. 

 Lithocharis tabacina Csy. 

 Pinophilus densus Lee. 

 Physetoporus grossnlus Lee. 

 Erchomus injlatus Horn. 



" punctipennis Lee. 

 Homalium cerei Sz. 

 Elensis fasciata Lee. 

 Orthoperus glaber Lee. 

 Cryptognaiha pusilla Lee. 

 Scymnus flebilis Horn. 

 Scymnillus aterrimus Horn. 

 Ditoma gracilis Slip. 

 Phlceonemus catenulatus Horn. 

 Silvanus nitidulus Lee. 

 " rectus Lee. 

 " opacidns Lee. 

 Hololepta yncateca Mars. 

 " cacti Lee. 

 " vicina Lee. 



(20) 



MAY. 1907 



