EEVISION OF ELEODIINI BLAISDELL. 321 



east of the Colorado River. I would sooner believe that they were 

 variations of tenehrosa. A single specimen taken in New Mexico 

 and in the U. S. National Museum collection is robust and resembles 

 consohnna in this respect, but I would still refer it to snowii, even 

 if I did not know the locality from which it came. 



A much larger amount of collecting must be done and larger series 

 obtained before the relationship can be worked out, and besides we 

 must learn something about hybrids and atavistic reversions. 



The Arizona specimens are not as strongly sculptured, and more 

 shining, with the humeri more obtusely angled than the New Mexican 

 examples, which have the humeri broadly and evenly rounded. 



The tt/pical, sinuate, and robust forms must be recognized and so 

 labeled in our collections. 



General ohservations. — The mentum is somewhat small and para- 

 bolic or trapezoido-parabolic in outline, the apex may be slightly 

 deflexed; the surface is feebly convex, very slightly foveate laterally 

 and not strongly punctate, the punctures are not noticeably setigerous. 



The prosternum is more or less prominent ventrally with the coxae, 

 sometimes very slightly so; horizontal between the coxse, submu- 

 cronate to vertically truncate behind, or arcuately convex antero- 

 posteriorly ; surface more or less longitudinally grooved between the 

 coxae. 



The mesosternum is arcuately convex and more or less broadly 

 concave. 



The metasternum laterally between the coxae is as long as the width 

 of a mesotibia at apex. 



The abdominal process is quadrate (male) or very slightly trans- 

 verse (female) and from a fourth to a third of its width broader 

 than the metasternal salient. 



The post-coxal part of th*> first abdominal segment is equal in 

 length to the process and also to that of the third ; the second is 

 about one-half (male) or not twice as long (female) as the fourth. 



The tarsi are moderate, the anterior in the male is noticeably 

 slightly longer than in the female. 



The protarsi are about one-half (male) or a fourth (female) of 

 their own length shorter than a mesotarsus. 



The mesotarsi are subequal to (male) or a little shorter (female) 

 than a metatarsus. 



The metatarsi are about two-thirds of their length shorter than a 

 metatibia. 



ELEODES LECONTEI Horn. 



Eleodcs Iccontci Horn, Trans. Amer. IMiil. Soc, XIV, 1870, p. 316. 

 Elcodcs subaspcra LeConte, Smitlisi)ii. Miscell. Coll., IGT, I't. 1, 1S66, p. 114. 



Ovate, about twice as long as wide, surface rather dull, elytra dis- 

 tinctly flattened and muricately j)unctured, 

 59780— Bull. 63—09 21 



