574 SCIENTIFIC RECOSD FOR 1884. 



ScuDDEK, S. H. — Triassic Insects from the Eocky Mountains. (Amer. 

 Jour. Sci. and Arts., September, vol. xxviii, pp. 199-203. IN'ew 

 Haven, 1884.) 



All but two or three of the specimens obtained belong to the group of 

 cockroaches ; and although Mr. Lesquereux thinks the beds of Permian 

 age according to the fossil flora, Mr. Scudder thinks the evidence of 

 the insects is in favor of their Triassic age. Eleven of the seventeen 

 species of cockroaches and five of the nine genera founds at Fairplay, 

 Colorado, belong to the Palaeoblattarise. The genera are as follows : 

 Etohlattina (1 sp.), Petrablattina (2 sp.), Anthracoblattina (1 sp. ?), Spilo- 

 blattina n. g. (4 sp.), and Poroblattina n. g. (3 sp.). As seen above two 

 of the genera are new. 



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Scudder, S. H. —Two New and Diverse Types of Carboniferous Myria- 

 pods. (Mem. Boston Soc. Nat, Hist., March, 1884, vol. iii, No. ix, „ 

 pp. 283-297, pis. xxvi and xxvii.) |j 



A discussion of Carboniferous Myriapods. The author proposes the ' 

 new suborder Protozyngnatha for the reception of the genus Paloeocampa I 

 M. and W., and in the suborder ArcMpolypoda, in the family of the 

 JSuphoberidce, he places and describes his new genus TricMulu^, and 

 describes the following species : T. villosus, T. nodulosus, and T. ammoniti- 

 formis. 



Scudder, S. H. — The Species of Mylacris, a Carboniferous Genus of 

 Cockroaches. (Mem. Boston Soc. Nat. Hist., March, 1884, vol. in, 

 No. X, pp. 299-309, pi. xxvu.) 

 Besides mentioning the previously described species, the author gives 



the following new ones : Mylacris antiquum^ M. lucifugum^ M. carbonum^ 



M. j^riscovolans, and 3t. ovale. The illustrations of both of these articles 



are excellent. 



(Scudder, S. H. — A Contribution to our Knowledge of Paleozoic Arach- 

 nida. (Proc. Amer. Acad. Arts and Sci., June, 1884, pp. 13-22. Bos- 

 ton.) 



This article contains both American and European forms. The new 

 family Poliocheridce is established and the new genus PoUochera is placed 

 in it. The new family Eoscorpionidce is also established and in it the 

 genera Uoscorpius, Cyclophthalmus^ and Mazonia are placed. The new 

 genera Geralinura and Geraplirynns are described. The following new 

 species are described : PoUochera punctulata, Geraphrynus carbonariu^, 

 Anthracomartus trilobitus, A. pustulatus, Geralinura carbonaria. 



Scudder, S. H. — Dictyonema and the Allied Insects of the Carbonif- 

 erous Epoch. (Proc. Amer. Acad. Arts and Sci., December, 1884, pp. 

 167-173. Boston.) 



This is a brief paper in advance of a fuller memoir with detailed de- 

 scriptions and full illustrations. Mr. Scudder establishes the new gen- 



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