260 Reviews — Pal(Eontographical Society. 



year before long. — I. The Liassic OpMuridse of Britain (comprisint^ 

 several species of 0_phioderma, Ophiolepis, Acroura, and Ophiurella), 

 preceded by a general notice of the Ophiuroidea, form the subject of 

 Dr. Wright's continuation of his Monograph on the Oolitic Echino- 

 derms, and are beautifully illustrated by Mr. C. E. Bone. Sectional 

 lists of the beds of the Upper and Middle Lias, characterized by 

 these Ophiurids, are judiciously introduced in Dr. Wright's descrip- 

 tions. — n. Mr. Salter continues his Monograph of the British 

 Trilobites, with ten richly-stored plates and numerous woodcuts. 

 What Barrande has done for Central Europe, Salter is accomplishing 

 for the British Isles, with nearly a lifelong knowledge of his 

 favourite fossils and their localities, and of all that has been said 

 and thought about them at home and abroad. Species belonging to 

 Ogygia, Barrandia, Niobe, Asaphus (and its subgenera Basilicus, 

 Isotelus, Bracliyaspis, and Cryptonymus) , Stygina, and PsilocepTialus, 

 are now fully laid before the student. The numerous additions 

 made to collections of Trilobites now-a-days, chiefly from the neigh- 

 boiirhood of St. David's on one hand, and of Dolgelly on the other, 

 will, without doubt, much augment Mr. Salter's supplementary 

 notes ; and the better basis geologists will have for the considera- 

 tion of the separateness of the Lingula-flags, Tremadoc Slates, etc., 

 as "Cambrian" rocks, distinct from the overlying Silurian group, 

 following the plan adopted by Mr. Salter in this highly important 

 Monograph. — III. Professor Phillips carries on his history and de- 

 scriptions of the British Belemnites, with an exhaustive notice of 

 former writers on the subject, a brief mention of " Belemnitic Beds," 

 and succinct, well-ordered descriptions of fifteen species of Belem- 

 nites (chiefly from the Lias), of which five are new. Numerous 

 woodcuts, and seven very delicate French lithographic plates, on 

 tinted paper, are the illustrations, and will be extremely welcome to 

 those who have many Belemnites in their collections. — IV. No Mono- 

 graph hitherto published by the Pal^ontographical Society will, per- 

 haps, interest so many geologists, both those who study the science, 

 and those who take an interest in it as a branch of general know- 

 ledge, bearmg specially on the history of man, and on the traditional, 

 fanciful, and theoretical histories of the earth, than Messrs. Dawkins 

 and Sanford's "Monograph of the British Pleistocene Mammalia," 

 of which Part I. is now before us. The Introduction will be a full 

 source of information for all the popular geology books for some 

 time to come, when cave-bones are to be talked of, and the mammals 

 with which man has been contemporary have to be enumerated. Eor 

 real geologists and palaeontologists, this Introduction is a very 

 valuable summary of Pre -historic and Pleistocene Mammalology. 

 Eive plates, well drawn by Dinkel and others, illustrate some of 

 the bones of Felis spelcea (or Cave-lion). — V. Numerous reprints of 

 Indexes, Title-pages, etc., for back volumes of the Monographs, 

 facilitating their being bound separately, show a desire on the part 

 of the officers of the Society to do their work as completely as 

 possible. We notice, also, an improvement on the title pages of the 

 new parts of Monographs, namely, an indication of the pages and 



