COLEOPTERA OF NEW MEXICO AND ARIZONA, i^^ 



it has reached the zone of the nut-pine and juniper, at an alti- 

 tude of some 6000 feet or perhaps a Httle more. At Cosnino 

 (6434 feet) the timber is of some considerable size and a col- 

 lection made in the famous canon where the cave-dwellers 

 had their homes was productive of much interesting material. 

 A few specimens taken at Flagstaff (6862) by my brother are 

 characteristic of the pine regions and include several specimens 

 of Rhagium lineatiim which extends northward into the British 

 possessions. Descending again on the w^estern slope, Wil- 

 liams is reached at an altitude of 6727 feet, before leaving the 

 belt of heavy coniferous timber. The collections of insects 

 made here show a considerable affinity to those of Coolidge 

 but with perhaps a higher percentage of forms which may be 

 considered as belonging more properly to the boreal fauna. 

 The next stop was made at Seligman, where the vegetation 

 has again taken on a stunted appearance and consists chiefl}^ 

 of sage-brush. At Peach Springs, however, though lower, 

 there is a slight growth of conifers on the hills while the valley 

 is sandy with a sprinkling of soap-weed, cactus and mescal. 

 The altitude of Peach Springs is given as 4759 feet. No 

 more collecting was done until the valley of the Colorado was 

 reached at East Bridge, which is on the Arizona Bank, while 

 The Needles lies just across the river in California at an alti- 

 tude of less than 700 feet. Here the broad bottom is over- 

 grown with willows and tall reeds, while a little farther back 

 they are replaced by the screw-bean and various shrubs of a 

 dr}' or resinous nature, such as might be calculated to resist 

 the fierce heat and the drying winds which blow off the 

 parched Colorado Desert. The fauna of this valle}^ is, to a 

 large extent, quite different from that of any other point 

 touched upon the route and some species show depauperate 

 and bleached forms not easily recognizable as mere variations 

 of those found in more hospitable climes farther east. 



Regarding the identifications of species listed, it should be 

 said that much aid has been derived from various sources, and 

 those friends who have received series of the insects collected 

 on the trips referred to, will note that a few of the names un- 



