150 MR. H. BOLTON ON INSECT- RE MAINS [Feb. I9II, 



subject, describing the structure of Palaeozoic cockroaches with 

 remarkable detail, and adding eight new species and one genus. 

 Dr. Sellards was fortunate in securing several remarkably good 

 forms, which he figured and described. 



Still more recently, Dr. Anton Handlirsch 1 has subjected the 

 whole of the American forms to a critical examination and revision, 

 and has modified to a considerable extent the work of Scudder 

 and Sellards, more especially that of the former. According to 

 Dr. Handlirsch, the Palaeozoic cockroaches, all of which he groups 

 under the order Blattoidea, number close upon 74 genera and 

 271 species. About 70 of these species cannot as yet be referred 

 with certainty to any known genus. The genera are divided into 

 nine families. 



The British forms at present known are comparatively few, and 

 are as follows, arranged in order of their date of publication : — 



Etoblattina (Blattiditjh) mantidtotdes (Goldenberg) (' Fauna 

 Sarsepontana EossihV 1877, p. 20). 



J. W. Kirkby, 'Remains of Insects from the Coal Measures of Durham' 

 Geol. Mag. vol. iv (1867) pp. 388-90 & pi. xvii, figs. 6-7. (' Portions of the fore- 

 wing or tegmina [sic] of an Orthopterous insect nearly allied to Blatta, from 

 the Coal Measures opposite Claxheugh, near Sunderland,' referred to Blattidium 

 mantidioides.) S. H. Scudder, Mem. Bost. Soc. Nat. Hist. vol. iii, pt. 1 (1879) 

 pp. 72-73, woodcut, subsequently transferred the species from Goldenberg's 

 genus JBlattidhim to JEtoblattina. 



Etoblattina johnsoni H. Woodw. 1887. 



LlTHOMYLACRIS KIRKBYI H. Woodw. 1887. 



Leptoblattina exilis H. Woodw. 1887. 



Dr. Henry Woodward 2 described the foregoing new species in 

 1887 from four examples, three of which had been obtained from 

 the clay-ironstone band between the ' Brooch' and the 'Thick Coal ' 

 at Coseley near Dudley : they were all preserved in nodules of 

 ironstone. The fourth specimen had been obtained by the late 

 James W. Kirkby from the Upper Coal Measures, near Methil on 

 the Eifeshire coast. This specimen is the Lithomylacris JcirJcbyi of 

 the above list. 



Etoblattina peachii H. Woodw. 1887. 



In the ' Geological Magazine ' for the same year (p. 433), Dr. Wood- 

 ward described the occurrence of the larval stage of a new species, 

 which had been found in a light brown nodule of clay-ironstone 

 obtained at Kilmaurs (Ayrshire). 



1 ' Revision of American Palaeozoic Insects ' [Transl. L. P. Bush] Proc. U.S. 

 Nat. Mus. vol. xxix (1906) pp. 661-820. 



2 ' Some New British Carboniferous Cockroaches ' Geol. Mag. dec. iii, vol. iv 



(1887) pp. 49 et seqq. 



