1878.] 367 [Uhler. 



There are four specimens with No. 25, in the collection. One of 

 them is a little more brassy and elongated than the others and has a 

 decidedly impressed streak near the margin of the pronotum, but the 

 conformity of the other characters induces me to keep it here. 



Number 11 is labelled "Ohio, Ward," but it is the well known 

 form of this species, which is common in New England, as well as 

 in the central States. 



The name " subviridis" was given to it by Mr. Say, but afterwards 

 changed to liisteroides when he printed the description. 



No. 25 was determined as liisteroides, for Dr. Harris, by Mr. Say 

 himself. 



The length given by Mr. Say to his T. liisteroides is large enough 

 to include also the preceding species; but, as far as our present 

 knowledge extends, the two are sufficiently distinct. 

 3. C. pulicaria. 



Odontoscelis pulicarius Germar, Zeitsch., i, 39, 6. Id. H.-Schf., 

 Wanz. Ins., v, 34. 



No. 149, Harris' Collection. "New York, Mr. Willcox." 



This is a common species in Massachusetts, although Dr. Harris 

 seems not to have had specimens from the State. It may be found, 

 sometimes quite abundantly, in the axils of the leaves of species of 

 Eupatorium. 



PACHYCORIDiE. 



Aulacostethus. New genus. 



Form of Diolcus Mayr. Head about two-thirds as long as the 

 width across the eyes, much shorter than the pronotum. Tylus longer 

 than the lateral lobes, raised above the adjoining surface. Inferior 

 cheeks blunt, eonvexly thick, bucculae very slender; rostrum ex- 

 tending nearly to the end of the second ventral segment, the second 

 joint subequal to the third and fourth united, the third and fourth 

 equal. Elevated sternal flaps short, broadly rounded; the margin 

 of the deep sternal sulcus feebly elevated between the anterior and 

 intermediate coxae, but thicker and more elevated between the inter- 

 mediate and posterior coxa;. Exterior face of tibias obsoletely cari- 

 nate, the lateral edges acutely carinate. Odoriferous ducts very 

 long, ligulate, reaching almost to the outward margin of the plate on 

 which they are situated, the osteole placed more than one-half way 

 back upon it, and from it the sulcus runs outwards to the end of the 



PROCEEDINGS B. S. N. H. — VOL. XIX. 24 AUGUST, 1878. 



