fiOO [February, 



similar to that of Utzuach and Diirnten, a few elytra of Coleoptera 

 have been obtained by M. Fillet, from which Dr. Heer* has determined 

 Donacia discolor and menynntlndis, and a few small Carabidce. 



Several elytra of Coleoptera have recently been discoveredf by 

 Herr Nathorst and Prof. "Wartha in the glacial strata of Schwerzenbach, 

 in the Canton of Zurich. From these elytra Dr. Heer J has determined 

 about twelve species, including Harpcdus IcevicoUis, Otlo7'Jii/nchus§ 

 montanus, O. alpicoJa, O. rugifrons, O. fuscipes, Fterosticlius nigrita, 

 Gyrimis naiator, SiljjJia dispar, Donacia sericea, MeJoIontha liip)poGas- 

 tani, Carahus arvensis, kc. 



A few elytra of Coleoptera have also been obtained in the drift at 

 St. Jacob, on the Firs, in the Canton of Basel, and have been identified 

 by Dr. Heer|| as belonging to the genera Gyrinus, Hydropliilus, 

 Pterosticlius, Donacia, and Elater. 



America. 



From remains of Coleoptera, discovered in cave deposits at Port 

 Kennedy, in Pennsylvania, Dr. G. H. Horn^ has identified about nine 

 species belonging to the genera Cychrus, Cymindis, CJilcenius, Diccelus. 

 Ghceridium, PhancBUS, Aphodius, and Fterosticlius. In 1877, Mr. 

 Scudder** described two species of Carahidce {Loricera glacialis and 

 Loxandrus gelidus) from interglacial deposits at Scarboro' Heights, 

 near Toronto, Canada. 



Elytra of a few other species of Coleoptera have been obtained in 

 the most recent formations of this Period ; but as they are all identical 

 with species now existing, it will be unnecessary to enumerate them, 

 and, with a few observations on the flora and fauna of this Period, I 

 shall bring this series of papers to a conclusion. ft 



The Plants belonged exclusively to existing species, and, with the 

 exception of many of the Birds and the majority of the Mammals, almost 

 all the animals were identical with those now living. 



Of the Invertebrates, all the known forms of the Mollusca, with 

 the exception of a few of those from the oldest deposits of the Period, 

 belong to species now existing, especially in Northern or Arctic 

 latitudes. 



• Die Urwelt derSchweiz Ost edit.), pp. 481, &c., 1865. 



+ „ „ (Slid edit.), p. 581, Zurich, 1879. 



t ,, ,, ,, antea cit., p. 581. 



§ Dr. Heer states that the species of this genus were identified by Dr. Stierlin, op. antea cit. (2nd 



edit.), note on p. 581. 

 II Op. antea cit. i'2nd edit., 1879), p. 533. 

 ir Trans. Amer. Ent. Soc, vol. v, pp. 241—245, 1876. 



** Bull. United States Geol. and Geog. Survey, vol. iii, No. 4, art xxx, 1877. 

 ++ I have to express my th.anks to Prof. Heer, Dr. Goklenberg, and Mr. Scudder for .several valuable 



conimuuications made to me whilst eng.aged in the preparation of these papers. 



