104 PSYCHE. [Stptemhei— October i88S, 



iiig of all M. Jekel's new species, but in xA.niericaii collections from the fact 

 one, as varieties of well known species. that in inany specimens the second joint 

 Since Dr. Horn's paper appeared Dr. of the club is only very slightly thinned 

 Le Conte has described G. chalybaetts at the lower margin, or even not notice- 

 froiu an imperfect specimen found in ably different from the normal form. 

 Florida, and Dr. Horn has described oc- A better character for our fauna is the 

 cidenta/isiiom a single 9 from Califor- one pointed out by Dr. Horn, namely 

 nia, givingat the same timea table for the the greater widening oftheelytral mar- 

 determination of the species. In the gin towards the base. In his descrip- 

 present essay two more species are made tion of jr/tir^//, based upon a 9 specimen 

 known and as one of them is not and included in the subgenus Onycho- 

 admissible into any of the subgenera ^r?^/^?^', Jekel alludes to this broad mar- 

 of Jekel, in order that its characters gin in liis specimen as being peculiar 

 may be properly understood, it seems to starkil and not seen in the other 

 worth while to pass in review the species of the subgenus. Dr. Horn, 

 ditferent forms hitherto known in our however, at once recognized that5/rtr>^'// 

 fauna. At tlie same time an oppor- was simply a specimen of balyl with 

 tunity is afforded me by the kindness of the antennal club normal. Another 

 Mr. Ulke to give some furthei" details character accompanying the w ider el)- 

 respecting G. cJialybaeits. This last tral margin in our fauna is seen in the 

 species by its form and structure is an sutural and second stria; of the el}tra. 

 obvious interruption in our series, and In the first division, in all of our striate 

 I have placed it at the g^w<\ of the genus species except one, the sutural stria is 

 for the present. It seems equally out interrupted by the scutellum, and does 

 of place among any of the exotic sub- not reach the base, while the second 

 genera mentioned by Jekel, and the stria is entire and reaches the base of 

 proper course appears to be to establish the elytra. In the second division the 

 a distinct genus for it. sutural stria arises at the base of the 

 The genus is primarily divided by elytra and follows closely the margin of 

 Jekel into those having the second joint the scutellum, thus interrupting the se- 

 oftlie antennal club entire and into those cond stria which in this case fails to 

 having the second joint more or less reach the base. 



emarginate beneath so that when the G. balvi was included by Jekel in 



joints are closed the margin of the joint his subgenus Anoplotrupes^ the species 



is more or less hidden. This appears of which do not have any special $ 



to be a natural division, but in the case characters. While recentl}' stud}'ing this 



of G. balyl^ the only species thus far species it was observed that in certain 



known in our fauna belonging to the large quite black individuals associated 



second division, there has been some with the usual dark bronzed green forms 



confusion on the part of Jekel, and also under the same name, the sexes were 



