N. A. INVpnrnCBRATE PArv/l-LONTOTvOGV. 74;") 



cequa, P. Meieri, Foroblattina* P. arcuata, P. Lalcesii., and Oryctohlattina 

 occidua from the Carboniferous of IMazon Creek, Illinois. 



SCUDDER, S. H. — New Genera and Si)ecies of Fossil Coekroaclies, An- 

 nals and Magazine of Xatural Hisfory, r>\h ser., vol. XY. })]). 408-4.4. 

 May, 1885. London. 



Eeprinted ironi the Proc. Acad. Nat. 8ci. Philadelphia, vol, — , March 

 10, 1885, pp. 34-39. 



ScuDDER, S. H. — Notes on Mesozoic Cockroaches. Proc. Acad. N^af. Sci. 



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



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

 fina,\ a remarkable ty{)e 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 chrysea E. Geinitz, Recania 

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

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

 and several species are described: JSfeorthroblattina^l N. alholineata, N. 

 Lalccsii, K. rotundata, K. attenuata, Scutinoblattina,^ 8. Brongniarti, S. 

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

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



ScuDDER, S. H. — Notes on Mesozoic Cockroaches. Annals and Maga- 

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

 London. 

 A reprint from the Proc. Acad. Nat. Sci. I'hilad., 1885, i)p. 105- 



115. 



ScuDDER, S. H. — The Relations of the Palaeozoic Insects. Amer. Nat, 

 vol. XIX, pp. 870-878. September, 1885. Philadelphia. 



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 Meterometabola, we may yet not call these Orthop- 

 tera, Neuroptera, &c., since ordinal features were not differentiated; but 

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

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

 words, the Paleozoic 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 inters al 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 jieriod, and the Triassic rocks became naturally (together 



* TTopo?, Blattina. \itTEptvo^. \ veo<i, op^oi. ^duvrivoi. 



