28 GEO. H. HORN, M. D. 



This species has an entirely different facies from any other in our 

 fauna, it in fact resembles a very large Microrhagm impressicollis, and 

 from several rather odd characters which it possesses has given me 

 considerable trouble to arrive at a conclusion regarding its generic 

 position. In the first place the eyes do not so much encroach upon 

 the antennal sulcus as is usual in the other species, while the sulcus 

 is not so free as in Dromseolus. The sulcus is very decidedly wider 

 in front. Finally, the lateral margin of the thorax is double in its 

 anterior two-thirds. This double margin is not at all of the form 

 described for Diaretus. After leaving the species for very nearly the 

 final study of the present essay, I have concluded that it is better to 

 consider it a Fornax than to make a new generic name. 



Occurs in Florida. 



PHAENOCERl S Bonv. 



Form obloiifi, very slijfhtly depressed ; antenuge shorter thau the head and tho- 

 rax, gradually clavate ; head convex, deeply inserted, the eyes oval entire, dis- 

 tinctly encroaching upon the antennal groove ; clypeus broad at base, as wide as 

 the distance to the eyes, apical margin arcuate ; prothorax gradually narrowed 

 in front, very little wider than long; scutellum oval; elytra distinctly striate; 

 prosternal strife rather deep, straight, divergent, the propleural triangle a little 

 longer than wide at base, the antennal groove deep, sharply limited on each side 

 and open behind ; metasternal episterna narrow, wider behind, the epiniera not 

 visible ; hind coxal plates gradually wider internally ; legs moderate. 



The unique before me is in very bad state of preservation, being 

 entirely deprived of tarsi, but after a renewed study, thirteen years 

 having elapsed since my original description I can see no reason for 

 changing the generic position of the species. The flattened clavate 

 form of the antennae leaves but little choice of position, but were the 

 antenna? slender there could be no hesitation in placing it in Fornax, 



One species is known in our fauna. 



P. aiiierioanu»$ Horn. — Form oblong, slightly depressed, black, feebly 

 shining, sparsely clothed with very short black pubescence ; antenute dark 

 brown, scarcely reaching the hind angles of the thorax, gradually clavate, first 

 joint short, second and third equal in length, but distinctly longer than wide, 

 fourth and fifth equal, a little longer than the third, six to ten broader thau long, 

 and gradually wider, eleventh narrower oval ; head coarsely, densely punctured ; 

 thorax a little wider than long, sides gradually narrowing to the front and very 

 slightly arcuate, disc convex, a vague depression at middle of base and a shallow, 

 broad depression near the lateral margin, surface densely and coarsely punctured ; 

 elytra parallel, narrowed at apical third, surface striate, intervals flat, densely 

 punctate ; prosternum coarsely but sparsely punctured, more shining, the triangle 

 more densely and opaque ; metasterniim coarsely, sparsely punctate ; abdomen 

 densely and much more finely. Length .30 inch ; 7.5 mm. 



