320 GEO. H. HORN, M. D. 



I have the less hesitation in uniting these species as individuals in 

 number are before me from the same localities from which the speci- 

 mens of Jekel were obtained ; while in determining the synonymy of 

 all the species, specimens have been sought from all parts of our 

 country, and have been studied individually. 



The species of the genus Geotrupes, proper to Boreal America, may 

 be arranged in the following manner, with only such synonyms given 

 as rest on published descriptions, to which reference will be made. 



GEOTRUPES Latr. 

 Myootrupes Lee. 

 G. retusus Lee. Proc. Acad. 18G6, p. .381. 



Onychotrupes Jekel. 



G. splendidus Fab. Syst. Ent. p. 18, ISTo. 63. 



Var. miarophagus Jekul, Monog. loc. eit. p. 611. 



Var. niixtus Horn, supra. 

 G. semiopacus .Jekel, Mouog. 1. c. p. 612. 



Var. Melsheimeri Jekel, Monog. 1. c. p. 61.3. 



Cne:motrupes Jekel. 



G. Egeriei Germ. Ins. Spec. I. p. 114. 



Tar. 9 Lecontei Jekel, Monog. I. c. p. 592. 

 G. opacus Hald. Proc. Acad. 185."., p. 362. 



Var. Haldemani Jekel, Monog. 1. c. p. 593. 



Var. Chevrolati Jekel, Monog. 1. c. p. 595. 

 G. Blackburnii Fab. Spec. Insect. I, p. 20, No. 85. 

 exr.rcvicnti Say, Jonrn. Acad, iii, p. 210. 



Var. Jekelii Horn, sui)ra. 

 G. conicoUis Jekel, Monog. 1. c. p. 591. (Not known to rne.) 



Anoplotrupes Jekel. 



G. Balyi Jekol, Monog. 1. c. p. 617. 



Var. siinilis Jekel, Monog. 1. c. p. 617. 

 Var. Starkii Jekel, Monog. 1. c. p. 609. 



In order to render the preceding paper more easy of study, the au- 

 thor has had the following cuts prepared, rather as diagrams however 

 than as exact illustrations. The species of Grotrupes are so comnu)n 

 everywhere during the summer months, that with but little trouble a 

 •rood series mav be collected during a single season. As there does 



