318 GEO. H. HORN, M. D. 



cato-rotundatis, striis jmuctatis angustis, interstitiis tcnuiter concinnoque trans- 

 versim rugulosis. — Long. 13: lat. 8 mill., 'J,." 



The second group is again divided into polished species with deeply 

 striate elytra and with a yellow antennal club, and those which are 

 opaque, elytra finely striate and antennal club sooty. 



E(/(r!(i Gerniar and Lecn»tri Jekel constitute the first sub-group. 



EgcricI has the elytra deeply sculptured and deeply crenato-pune- 

 tate, forming in this respect the most rugose of our species. In the 

 typical forms the epistonie is rounded, in the females it is frequently 

 more prolonged and becomes almost triangular, forming the species Le- 

 contci, itself founded on a unique female. A well defined series before 

 me, gathered from all parts of our country, show the elongation of the 

 epistonie to be merely an accident or variation and not by any means a 

 permanent character. The females more particularly are subject to 

 this variation. In fact, among all the specimens at my disposal I am 

 unable to find a single male with this and other characters sufficiently 

 marked to enable it to enter this variety. Egeriei has been known in 

 some cabinets, native as well as foreign, as exarafus Dej. 



The second sub-group contains Haldemam, ojjaois and ('lievrohiti. 

 In regard to the first species Jekel has been singularly unfortunate, as 

 Haldeman's type corresponds exactly with his description of IJalde- 

 mavi. Specimens from Texas are large and robust, and much more 

 convex than those from more northern regions. Ilnhhmdni and C'hev- 

 rolati have both been founded on unique specimens, and though I 

 have seen representatives of each in a series, it is impossible to tell 

 where one begins and the other ends. 



Anoplotrupes Jekel. 



The Geotrupes of this subgenus are characterized by a truncation of 

 the second joint of the antennal club, and by the absence of any sexu- 

 al difterence in the apical tooth of the anterior tibia. Our American 

 species have also a rather broad margin to the elytra, particularly at 

 the basal third, similar to that seen in many species of the group Fke- 

 hjtrupes, and in the European Auoplotrupcs si/loaticus and Stenio- 

 triij)(;s vernalis. The thorax has a slight dorsal sulcus, and the scutel- 

 lum is also sulcate. 



Among the numerous specimens of this subgenus now before me, 

 considerable variation exists in the degree of emargination of the se- 

 cond joint of the club. In one large specimen of similis Jekel the joint 

 is deej)ly notched so as to appear reniform. From this we have every 

 degree of degradation. Many specimens show simply an oblicjue truu- 



