248 GEO. n. HORN, m. d. 



D. d. — Elytra witli simple margin. 

 E. — Elytral intervals eijual, margin bluish liiiiliaf n<^. 



E. e. — Elytra bronzed, four intervals forming slemler co3tie..viii<*lu!>». 



(ti. R. {'(tOTCIl.) 



C. si/lvo^Hs and fiiiifimii>i diflTer in the latter being a broader and 

 more robust species, the elytral margin more reflexed ; the surface is 

 smoother and more shining. These differences do not appear, how- 

 ever, to be of any very great value, as there are specimens in the 

 cabinet of Mr. Ulke of such a form as to render it extremely doubtful 

 ti which of the two they should be referred. These differences find 

 a parallel in tsedafns and its varieties. (n. ii. fi.) 



Ciivina elonr/nta, Rand., (RnndaUi, Lee.), does not differ from the 

 C./ossor, Hbst., of Europe. All the specimens of this species col- 

 lected in this country have occurred on the seaboard, Boston ; it has 

 probably been introduced. It is not common. (g. ii. ii.) 



PKRIGO^VA, Cast. 



In September, 1875, among other synonymical notes, I spoke of the 

 identity of Trcchichus umhripomis, Lee, and nigriceps^ Dt^.j-i atjd at 

 the same time a confusion of generic nomenclature as indicated. 

 M. Putzeys noticing the difficulty, has kindly sent me for study a 

 specimen of Perirjona Japonica , Bates, and it is now possible to state 

 definitely that our species is also a Ferigona. In the arrangement of 

 his collection, Chaudoir had always so placed our species, but not 

 having any of our types with me, it vpas impossible until after my 

 return to confirm by comparison my opinion of the specific identity of 

 nigriveps and iimhrijxmnis. 



Perigojia, Cast., has for synonyms, therefore, Trcchichus, Lee, 

 Nesira, Motsch., and HSpufhinus, Niet. 



Pentoplogenius, Morav., as a synonym, is from notes made by Dr. 

 Leconte, and by a letter from M. Putzeys, I infer that Somoplntiia is 

 another thing, while nothing can be said at present of Masoreus, 

 which by some strange accident I wrote Mastigus. 



Prrlgona nigriceps, (Dej.), is the name of our insect. 



P.4TROBIJS, Dej. 

 In the Annales Soc. Ent. Bclg., XIV., 1871, Baron Chaudoir has 

 published a review of the group Pogonides, which was entirely over- 

 looked by me at the time I prepared the table of Patrobus of our 

 country. (Trans. Am. Ent. Soc, 1875, p. 160). I cannot, however, 

 see any valid reason for changing the views there expressed, that the 



