H. C. FALL. 121 



Arizona (Cochise County). 



Form and size of militaris, to which it is closely related. 

 In the latter the elytra are in great part red, and the propy- 

 gidium is less closely punctate. 



H. g agates n. sp. 



Broadly oblong oval, black, polished, prothorax and elytra very 

 minutely and sparsely punctulate. Outer thoracic stria interrupted for 

 a greater or less distance at middle. Elytra with all the dorsal striae 

 entire, the fifth slightly shorter, recurved and joining the sutural ; no 

 subhumeral stria. Propygidium moderately coarsely not densely punc- 

 tate ; pygidium more finely and less closely punctured. Length, 3-3.3 

 mm. ; width, 2.6-2.8 mm. 



Lake Tahoe, California (type); Spokane, Wash. 



In the type the outer prothoracic stria reaches the apical 

 third, and there is a very short detached basal stria ; in the 

 Spokane example the stria is narrowly interrupted behind 

 the middle. This is a near ally of americanus, but is dis- 

 tinctly narrower and more oblong, the pygidium much more 

 evidently punctate apically. 



NITIDULID^E. 

 CARPOPHILU8 Steph. 

 In his treatment of this genus in the " Biologia " Dr. Sharp 

 has called attention to the presence in certain species of an 

 oblique raised line cutting off the anterior angle of the meta- 

 sternum. This line is really a backward production of the 

 anterior marginal raised edge of the metasternum. In the 

 greater number of our species the line is strictly marginal 

 throughout, reaching the episternal suture at the anterior 

 angles of the metasternum. In a few, e.g., yucctz and tem- 

 pestivus, it arches backwards just within the angle ; in dimi- 

 diatus and floridanus n. sp., the flexure is more evident; 

 in marginatns and antiquus it leaves the front margin at a 

 greater distance from the angle, and approaches the epis- 

 ternal suture at its anterior third; in mutilatus and luridus 

 at the anterior two-fifths, and in nitens n. sp., at about the 

 middle, the front angles of the metasternum being in this 

 case very widely truncate. The corner of the metasternum 



TRANS. AM. ENT. SOC, XXXVI. (16) JUNE, 1910. 



