344 Natural History Bulletin. 



the angles. Behind this is a fine transverse impressed Hne, 

 not attaining the angles. 



Mesothorax subquadrate, angles obliquely subtruncate, disk 

 with a longitudinal elevated line on each side of the middle, 

 not attaining the base. On each side of this line are large 

 punctures, arranged in lines near the margin which has a 

 coarse bead. Base with fine, distinctly impressed transverse line. 



Mesothorax almost exactly the same but shorter. 



Abdomen with the first and second segments nearly equal, 

 though the second is a trifle longer, the third and fourth still 

 longer. The posterior angles of all the segments are promi- 

 nent, the prominence becoming more pronounced as we ap- 

 proach the terminal pieces. The ninth segment bears a fan- 

 shaped pro-leg, with scalloped edges, on its under surface, 

 while the eighth carries four bristle-tipped locomotive tuber- 

 cles beneath. 



Spiracles situated in the lateral brown spots previously 

 mentioned. The mesothoracic pair are anterior to the coxse, 

 the abdominal pairs being situated a little nearer the base than 

 the apex on segments i to 7- 



L/egs moderate, femora long, suture of trochanter tolerably 

 well marked, cox^ and tibiae about equal in length, shorter 

 than the femora. Tarsal piece, a mere claw. 



One specimen was collected by me in the Santa Rita Mts., 

 Arizona, during August. The mouth parts are difficult to 

 examine without dissection which does not seem warranted 

 by such scanty material. The specific assigment is somewhat 

 doubtful and is based on the fact that C. -profundus is the only 

 species of sufficient size in the imago state to warrant the sup- 

 position that it is produced from such a large larva, and occurs 

 not uncommonly in the same region. The colors are all 

 present and bright in an alcoholic specimen. Some structural 

 divergencies may be noticed between my specimen and the 

 figures given by Dr. Riley ^ of C. ■pcnnsylvanicas, a much 

 smaller species. 



1 American Entomologist, III, 249. Fourth Rept. U. S. Ent. Com., 96. 



