BIBLIOGRAPHICAL SKETCH. 23 



1843. J. E. Portlock's ' Report on tlie Geology o£ the County o£ Londonderry, 

 and of Parts of Tyrone and Fermanagh,' was published by the Geological Survey 

 in 1843. There is a descriptive list of Carboniferous fossils, which are well 

 figured. Mention is made of forty-two species and two varieties belonging to 

 twenty-one genera, twenty species and two varieties being described for the first 

 time ; but they are all referred to well-established genera, though subsequent 

 investigation shows such reference to be not always biologically correct. 



1843. It is possible that the shells figured by Captain Brown in the ' Ann. and 

 Mag. of Nat. Hist.,' vol. xii, 1843, pp. 390 and 396, under the names Fachyodon 

 Gerardi and P. pyraniidatus, really belong to Scliizodvs ; but, as all the types have 

 disappeared, this reference founded on the appearance of the figures alone is 

 uncertain. 



In 1844 a letter to the editor of the ' Annals and Magazine of Natural History ' 

 from Professor King appeared in that periodical, informing him that he had 

 been " compelled to institute six new genera," in a ' Monograph of the Invertebrate 

 Fossils of the Magnesian Limestone of the County of Durham,' " namely, 

 Allorisma for /SflfJif/i^moZarm S'((Zcaia, Phillips .... Schizodus for the Permian 

 and Carboniferous Axinus." 



1844. The new genera and species by Sir R. Griffith were named and figured 

 by F. M'Coy in his great work entitled ' A Synopsis of the Characters of the 

 Carboniferous Limestone Fossils of Ireland;' but the list of names in Griffith's, 

 ' Notice ' is somewhat different from that in the Synopsis ; in some cases the 

 generic name is changed, and in others the specific ; and in addition the names of 

 fossils obtained from the Petherwin and other beds of North Devon are included in 

 the former list. 



One genus (Pteronites) and sixty-one species in the list are marked as new, all of 

 which were subsequently described and figured. 



' The Synopsis of the Characters of the Carboniferous Limestone Fossils of 

 Ireland,' by M'Coy, is the standard book of reference on British Carboniferous 

 Limestone fossils. One hundred and ninety-five species belonging to forty-eight 

 genera of Lamellibranchiata, six of which are new, are figured and described; 

 in addition descriptions are also given of those forms occurring in Ireland, 

 which had been previously published. One curious point is to be noted in the 

 plates, and that is that the drawings have not been reversed on the stoue, conse- 

 quently the opposite valve is depicted to that which is apparently shown. Many 

 of the types are in the " Griffiths Collection " of the Museum of Science and Art, 

 Dublin, but unfortunately those which were in private collections have been lost 

 sight of. 



1844. Dr. Garner brought out his ' Natural History of Staffordshire ' in 1844 ; on 

 plate B he gives figures of Fecteii ellijpticus (interior) , In ocerarnus vetustus, and Pleuro- 



