186 THE CANADIAN ENTOMOLOGIST. 



the principal characters of the species, with the most noteworthy differences 

 observed among individuals : — 



Beak about as long as the thorax, sometimes longer, mostly shorter ; a broad trans- 

 verse impression between the eyes more or less evident ; a round frontal fovea, a smaller 

 elongate one between the insertion of the antennoe sometimes obsolescent; in some ex- 

 amples a trace of a carina between the foveK, but usually not ; punctuation fine and 

 sparse to coarser and denser, clothed with minute whitish scales to tip ; antenna insert- 

 ed about one-third from apex, slender, light to dark ferruginous ; club mostly darker ; 

 thorax about as long as wide, sometimes longer, sometimes shorter, conical ; process of 

 base prolonged more or less acutely between the elytra in place of the scutellum, which 

 is not visible; fossa deep, sometimes limited at basal third, sometimes the impression 

 exteads to middle and sometimes narrowly to apical margin, densely rugoso-punctulate; 

 some fine punctures, mostly on the sides ; elytra not or but little wider than the thorax, 

 with irregular series of moderately coarse punctures, of which the inner three are usually 

 well defined ; tips separately acutely rounded and conjointly emarginate ; uniformly 

 mottled with condensed spots of short white scaly pubescence, as is likewise the thorax 

 and under side, the latter also ornamented with numerous denuded black dots ; femora 

 annulate with white. 



Length, .30-.4oinch. Habitat. — Common from Jacksonville, Fla., southward. 



The dentided elytral area mentioned by Mr. Casey is entirely due to 

 abrasion, as is also that of the disk of the thorax, neither being present in 

 recent specimens. The surface in some of the examples is covered with 

 a yellow pollenoid powder such as is seen in concaviis. The female 

 seemingly differs from the male only in the more cylindrical, slightly 

 longer, less pubescent, and more finely punctulate beak, with the antenna 

 inserted near the middle, and the usually longer thoracic impression. 



Cremastochilus Harrisii, Kirby. — This species was taken, by myself, 

 with ants (species not observed) in Western Pennsylvania [Can. Ent., XX., 

 i6o];also in Florida, with a large ant inhabiting under a board [lb., XXVI., 

 255], which Prof Schmitt names Camponotus floridanus. In March, 

 1895, I took an example with the same species of ant at Lake Worth, 

 under circtimstances somewhat different from the ordinary. A small pine 

 had been broken off by a wind-storm about six feet from the ground, the 

 broken end resting on the stump ; under the loosening bark of the tree a 

 colony of ants had formed a nest, and in it was this Cremastochilus ; the 

 ants were in great consternation at the exposure of their habitation, and 

 while anxious and in much hurry to remove their pupfe to places of 

 safety, they appeared to be equally solicitous about the Cremasioc/ii/tis, 

 several of them laying hold of it and dragging it with them. At first it 

 simulated death, but after having been dragged awhile it got up and 

 walked off quite lively under their guidance. 



Polypleurus ?iitidtis, Lee. — This fine beetle, rather rare in collections, 

 is abundant along Lake Worth, Florida, in pine hummocks where there 

 are stumps. The larva when full-grown is about an inch and one-half in 



