The Palceontoffraphical Society, 427 



development of Coral -life in the Azzarola series (as seen in the 

 south-eastern slopes of the Alps on the Lake of Como, and on the 

 north-western slopes to the south of the Lake of Geneva), but 

 scantily represented in the western and north-western European 

 Avicula contorta zones, in the White Lias, and in the zone of 

 Ammonites planorlis, followed by another even more luxuriant de- 

 velopment of species in the zone of Ammonites angulatus (sixty-one 

 species, of which fifty are found in the British Isles), again suc- 

 ceeded hy a paucity of species in the zone of Ammonites Bucklandi. 



Dr. Duncan then proceeds to describe in detail the corals of this 

 last-named zone (seven in number) ; also of the zone of Ammonites 

 ohtusus (one species), Lower Lias ; the zone of Ammonites raricostatus 

 (four species). Lower Lias ; the zone of Ammonites Jamesoni (one 

 species), MiddleLias; the zone of Ammonites Henleyi (one species). 

 Middle Lias. 



At the end the author adds an account of some corals from the 

 zones of Amm. planorlis and Avicula contorta (forwarded after the 

 first part of his monograph was finished), and a note on the age 

 of the Brocastle and Sutton stone deposits, etc. Seven woodcuts 

 and six very admirable plates, which reflect the highest credit upon 

 Mr. G. R. De Wilde, complete this useful monograph. 



3. Dr. Wright continues his description of the Echinodermata 

 from the Chalk and Greensand. From the White Chalk we have 

 figures and diagnoses of Cidaris Tiirudo and C. intermedia ; from the 

 Grey Chalk, C. Bixoni^ C. pleracantJia'; from the Sponge-gravel, near 

 Farringdon, Berkshire, Cidaris Farringdonensis. 



The additional notes on Cidaris clavigera, Konig, with figures of 

 thirteen different forms of spines found attached to this very 

 variable Upper Chalk species ; also those on Cidaris perornata, and 

 C. Bixoni, with figures of the spines of C. Bowerbankii ; and a note 

 on the Cidares of the Eed Chalk of Hunstanton and Speeton, at 

 present only known from their spines, are contributed by the Rev. 

 T. Wiltshire, F.G.S., the Honorary Secretary of this Society, who 

 has long collected and studied British Cretaceous Fossils. 



Dr. Wright then gives a resume of M. Cotteau's classification of 

 the Diademadce and proceeds to describe eleven species of Pseudo- 

 diadema from the Grey Chalk, Gault, and Upper and Lower Green - 

 sand. We rejoice to see Dr. Wright has made free use of the 

 pruning-knife, and that, although he has made two new species in 

 this genus, he has made synonyms of twenty old ones. 



Of Mr. Bone's plates it is needless to say more than that this 

 veteran artist continues unsurpassed in the charming softness of 

 his plates, which resemble pencil-drawings more than lithography. 



4. Mr. James Powrie and Mr. E. Ray Lankester contribute 

 their first part of a Monograph of the Fishes of the Old Red Sand- 

 stone of Britain. The present part, on the Cephalaspidce, is under- 

 taken, we observe, by Mr. E. Ray Lankester alone, his colleague 

 Mr. Powrie, being engaged on another portion of their monograph. 



In this brief notice we cannot give, as we should wish to do, an 

 outline of this interesting group of fossil fishes, — the earliest of all 



