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BRITISH STROMATOPOROIDS. 



Mr. Ulrich has been so good as to supply me with a specimen of this form, and I 

 think it is certainly identical with that previously described by me under the 

 name of L. ohioensis. 



In 1886, Dr. C. Rominger published a paper on the " Minute Structure of 

 Stromatopora and its Allies " (' Proc. Acad. Nat. Sci. Philadelphia,' pp. 39 — 56, 

 1886). This paper is principally occupied with a criticism of the memoir on the 

 structure of the skeleton of the Stromatoporoids published in 1878 by Dr. Murie 

 and the present writer ; but as Dr. Rominger wrote without having previously 

 made himself acquainted with the General Introduction to the present work, it is 

 unnecessary to discuss his views in detail. Dr. Rominger further resuscitates a 

 number of manuscript names of Stromatoporoids which he had employed in a 

 paper which had been laid before the Academy of Sciences in Philadelphia in 1871, 

 but which had never been published. The names in question cannot, however, be 

 now allowed to have any validity, since the forms to which they were applied by 

 Dr. Rominger have been described, prior to 1886, under other titles in various 

 published memoirs by other investigators. 



In 1886, the present writer published two parts of a paper entitled " On some 

 New or Imperfectly described Species of Stromatoporoids " (' Ann. and Mag. 

 Nat. Hist.,' ser. 5, vol. xvii, pp. 225 — 239, pis. vi — viii; and vol. xviii, pp. 

 8 — 22, pis. i and ii). The species dealt with are fully described, and in all 

 cases figures of the microscopic structure of the skeleton are given. The 

 following forms are described and figured : — Actinostroma clathratum, Nich. ; 

 A. verrucosum, Goldf. ; A. hebbornense, Nich. ; A. astroites, Rosen sp. ; A. bifarium, 

 Nich.; A. stellulatum, Nich ; A. Schmidtii, Rosen sp. ; A. intertextum, Nich.; 

 Stromatoporella laminata, Barg. sp. ; S. eifeliensis, Nich. ; 8. damnoniensis, Nich. ; 

 8. arachnoidea, Nich.; 8. curiosa, Barg. sp. ; 8. granulata, Nich.; Labechia 

 conferta, Lonsd. sp. ; L. ohioensis, Nich. ; L. canadensis, Nich. and Mur. ; 

 L. serotina, Nich.; Lophio stroma (Labechia?) Schmidtii, Nich.; Bosenella dentata, 

 Rosen sp. ; B. macrocystis, Nich. ; and B. pachyphylla, Nich. 



In 1887, the third part of the preceding memoir was published (' Ann. and 

 Mag. Nat. Hist.,' ser. 5, vol. xix, pp. 1 — 17, pis. i — hi). The following 

 species are described and figured : — Claihrodictyon vesiculosa m, Nich. and Mur. ; 

 G. variolare, Rosen sp. ; 0. Liunarssoni, Nich.; C. striatellum, D'Orb. sp. ; 

 G. crassum, Nich. ; G. fastigiatum, Nich.; C. regulare, Rosen sp. ; G. celhdosum, 

 Nich. and Mur.; G. ostiotai imi, Nich.; G. laxum, Nich.; G. retiforme, Nich. and 

 Mur. ; and G. (/) tuberculatum, Nich. 



In 1887, Waagen and Wentzel published the volume of the " Salt Range 

 Fossils " dealing with the Stromatoporoids and some of the Corals (' Palason- 

 tologia Indica/ ser. 13, vol. vii, pp. 925 — 962, pis. cxvii — cxxi). The earlier 

 portion of this work is occupied with a discussion of the general structure 



