156* GEO. H. HORN, M. D. 



Chaudoir places unicolor Kby. as a probable synonym of this species. 

 I am inclined to believe from his remarks that the specimens determined 

 by him as neglecta are really borealis, with which Kirby's species might 

 be more aptly compared than the present. 



Occurs in the New England and Middle States and is the rarest 

 of our species. 



APENES Lee. 



This genus is one of many which have been dismembered from 

 Cymindis from which it differs principally in having the thorax lobed 

 at base. The mouth parts do not differ essentially from Cymindis 

 except that the terminal joint of the labial palpi is more broadly 

 triangular. 



With Pinacodero, Apenes is placed by Chaudoir in a group or 

 series which he calls " aberrant Cymindides." The previously indi- 

 cated group of u true Cymindides" is not defined, consequently it is 

 impossible to determine in what respect these .two (with others) are 

 especially aberrant. 



Apenes is exclusively an American genus, species occuring from 

 temperate North America to the Argentine Republic. 



Those known in our fauna are as follows : 



Head longitudinally sulcate. 



Surface with a metallic bronze lustre lucidnla. Dej. 



Head simply punctured. 



Elytra shining, strife distinctly impressed siliuata Say. 



Elytra opaque black, striae very fine opaca Lee. 



Head finely strigose or longitudinally wrinkled. 



Color brownish, subopaque nebulosa Lee. 



A. liM-idulu Dej. — Form moderately elongate, subdepressed, surface metallic* 

 the head and thorax usually greenish, the elytra dark bronze or cupreous. Head 

 rather deeply longitudinally sulcate. Antennae rufo-testaceous. Thorax broader 

 than long, narrowed at base, sides arcuate, narrowly margined, hind angles dis- 

 tinct but very small, disc feebly convex, the median line entire, surface shining, 

 irregularly wrinkled, at base a few punctures, at apex longitudinally strigose. 

 Elytra with a pale humeral spot (sometimes absent) at the base of the sixth 

 interval, surface with moderately deeply impressed, finely punctured striae, the 

 intervals slightly convex, finely alutaceous and obsoletely sparsely punctulate, 

 dorsal punctures two, the anterior at the middle of the elytra equidistant from the 

 second and third striae, the posterior near the second stria. Body beneath piceous, 

 shining, nearly smooth, tibiae and tarsi paler. Length .40 inch; 10 mm. 



Male. — The anterior tarsi have four joints dilated and biseriately lamellate 

 beneath, the middle tarsi narrowly dilated not lamellate. The anal segment 

 has one puncture each side. 



Female. — Tarsi slender. Anal segment with two punctures. 

 Variations of the color of the surface are oftep observed. The legs 



