N. A. INVERTEBRATK PALAEONTOLOGY. 74;") 



ccqua, P. Meieri, Foroblattina,* P. arcnata, P. Lalesii, and Oryctoblattina 

 occidua from the Carboniferous of Mazon Creek, Illinois. 



ScuDDER, S. H. — New Genera and Species of Fossil Cockroaches. An- 

 nals and Magazine of Natural History, 5th ser., vol. XV, pp. 408-4.4. 

 May, 1885. London. 



Reprinted from the Proc. Acad. Kat. Set. PhUadeJphia, vol. — , March 

 10, 1885, pp. 34-39. 



ScuDDER, S. 11. — Notes on Mesozoic Cockroaches. Proc. Acad. Nat. Set. 

 Philad., vol. — , pp. 105-115. July, 1885. Philadelphia. 



These notes are divided into three parts. The first is on Pterinoblat- 

 tina,j a remarkable type of Palwohlattina ; Blattapluma Giet is the 

 type of the new genus, and the following new species are described 

 under it: P.penna, P. intermixta; Blattina ehrysea E. Geinitz, Becania 

 hospes Germ., and R. gigas Weyenb., are also referred to it. The second 

 part is on "Triassic Blattarife from Colorado." In it two new genera 

 and several species are described: Neorthroblattina.,1 N. albolineata, N. 

 Lal-esiij JV. rotundata, K. attenuata, Scutinoblattina,^ S. Brongniarti, S. 

 intermedia, S. recta. The third part is "On the genera hitherto pro- 

 posed for Mesozoic Blattarise." This is a brief revisionof these genera. 



ScuDDER, S. H. — Notes on Mesozoic Cockroaches. A^indls and Maga- 

 zine of Natural History, 5th series, vol. xvi, pp. 54-64. July, 1885. 

 London. 



A reprint, from the Proc. Acad. Nat. Sci. PMlad., 1S85, pp. 105- 

 115. 



ScuDDER, S. H. — The Eelations of the Paleozoic Insects. Amer. Nat, 

 vol. XIX, pp. 876-878. September, 1885. Philadielphia. 



Abstract of a paper read by Mr. S. H. Scudder at the April, 1885, 

 meeting of the National Academy of Sciences. The author states that 

 while we may recognize in the Palaeozoic rocks insects which were plainly 

 precursors of existing Heterometabola, we may yet not call these Ortlwp- 

 tera, Neuroptera, &c., since ordinal features icere not differentiated ^ but 

 all Palaeozoic insects belonged to a single order which, enlarging its 

 scope, as outlined by Goldenberg, we may call Pakeodictyoptera ; in other 

 words, the Palaeozoic insect was a generalized Hexapod, or more par- 

 ticularly a generalized Heterometabolon. Ordinal differentiation had 

 not begun in Palaeozoic times. 



We find, then, that the entire change from the generalized hexapod 

 to the ordinarily specialized hexapod was made in the interval between 

 the close of the Palaeozoic period and the middle, we may say, of the 

 Mesozoic. These significant changes were ushered in with the dawn of 

 the Mesozoic period, and the Triassic rocks became naturally (together 



* Tfopo?, Blattiiiw. \7trsptvo?. t veoi, op^o's. ^dnvrivoS. 



