INVERTEBRATA. 281 



Btone of Derbyshire. Amongst the more important facts contributed 

 by this species to the elucidation of the anatomy of Melonites is the 

 determination of the spines. H. A. N. 



King, Prof. W., and Prof. T. H. Rowney. Remarks on ' The Dawn 

 of Life,' by Dr. Dawson ; to which is added a Supplementary Note. 

 Amuils, ser. 4, vol. xvii. pp. 360-377. 



A controversial paper. Bring forward objections against the supposed 

 organic nature of Eozoon Canaxlense. 



Koninck, Prof. L. G. de. Recherches sur les Fossiles Paleozoi'ques 

 de la Nouvelle-Galles du Sud (Australie). 8vo, pp. 140 ; 4to Atlas, 

 4 pis. Brussels. 



Of the 59 Silurian species, 13 are new and 8 doubtful. They are aU 

 of U. Silurian type, and belong to genera represented in Europe and 

 America by closely allied forms. Two horizons are recognizable : — a 

 lower, corresponding to the U. Llandovery ; and an upper, to the Ludlow 

 series. The species are nearly equally divided between the two groups, 

 32 occurring in the lower and 27 in the upper. In the former the 

 fauna is almost exclusively molluscan and crustacean, whilst in the 

 latter corals and Crustacea chiefly abound. 67 Devonian species are 

 described, of which 30 are new and have their representative forms in 

 European or American rocks, except 4 — ArclicBOcyathus ? ClarJcei, Bil- 

 Ihujsia alveolaris, Niso Darwinii., and Mitehellia stria tula. ITie U. De- 

 vonian is indicated by several known species ; a lower horizon is indi- 

 cated by others. Under the name of Mitehellia is described a new 

 genus of Buccinidae, with an elongated and much contracted mouth. 

 The Tertiary genus Niso is also found to occur in these Devonian rocks. 

 For names of new species see Index of Species, under Mollusca, Crus- 

 tacea, Actinozoa, and Plants. R. E., Jun. 



Lapworth, Charles. On the Scottish Monograptidae. Geol. Mag. 

 dec. ii. vol. iii. pp. 308-321, 350-360, 499-507, 544-552, pis. ix.- 

 xiii. & XX. 



Defines the Monograptidae as including the genera Eastrites, Mono- 

 graptus^ and Cyrtograptus, and describes all the species known as 

 occurring in the Silurian rocks of Scotland. Discusses the succession 

 of the Silurian deposits of S. Scotland, the distribution of Graptolites in 

 them, the vertical range of the Monograptidae, the synonymy of the 

 genera, and the structural and developmental characters of the forms. 

 Gives descriptions of the Scottish species, in most cases with figures. 

 15 new species and 3 varieties are described. The genus Dimorpho- 

 graptus, witli two new species, is proposed for some singular forms 

 which commence their existence as monoprionidian types, but become 

 diprionidian in the course of their growth. Concludes with a table 

 showing the vertical range of the species of Scottish Monograptidae, 

 from which various general considerations affecting the stratigraphical 



