Renews — The Palmontographical Society. 423 



Proceeding with the Bivalved Mollusca, he describes one more 

 species of Parallel odon, one of Modiolipsis, one of Modiola, one of 

 Spathella, and of Digoniomyn, a proposed genus. Of the Aviculida3, 

 he has CobracepJialiis (provisional), Zeptodesma, Zeiopteria, Ptycho- 

 pteria, Aviculopecten, Actinopteria, Pterinopecten, Crenipecten (?), 

 Pleuronectites, Pernopecten, and Proihyris. Numerous specimens of 

 Brachiopods have been collected by the author from the strata 

 referred to, and many of them, though distorted, are sufficiently 

 recognizable as species of RenssellcBria (?), Athyris, Spirifera, 

 Spiriferina. Bhynclionella, Orthis, Orthotetes, Strophomena, Prodnctus, 

 Stroplialosia, and Chonetes. The extreme care with which the 

 author has come to a decision on the probable and possible 

 affinities of the fossils passing through his hands is highly com- 

 mendable, and enhances the value of his work very considerably. 



In Part III, pp. 179-236, pis. xxii-xxxvii (1898), continuing 

 with the Brachiopoda, we have Chonetes, Crania, Discinn, and 

 Xiiigula. Under ' Bryozoa,' which term he decides in an earlier 

 monograph not to be so correct as ' Polyzoa,' but allowable to be 

 used for convenience, he has Feiiestella, Pinniretepora, Strehlotrypa, 

 Bhabdomeson, Zeloclema, and Fistulipora (?). Cormdites represents 

 the Annulosa. Of the Echinoderniata there are Zepidestres, Proto- 

 cidaris, Palceaster, Medusaster, Protaster, ZJugaster (?), Ophiiirella (?), 

 Pentremitidea, Codonaster, Taxocrinus, Bhodocriniis, Megistocrimis, 

 Mariocriaus (?), Actiuocrinus, Platycrinus (?), Adelocrinus, Poterio- 

 crinus, Scaphicrinus, Scytalocrinus (?), and Cceliocrinus. It is 

 pleasant to find among the foregoing several of the species 

 formerly described by Professor John Phillips, but the ' types ' 

 of which have been difficult to find until Mr. Whidborne has 

 devoted himself to these Devonian fossils both in quarries and 

 in museums. 



V. — In the fifty-second volume (for 1898), we find that Professor 

 T. Rupert Jones and H. Woodward have contributed Part III to their 

 Monograph of the British Paleozoic Phyllopoda (Phyllocarida)^ 

 devoted to the genus Dithyrocaris (pp. 125-176 and pis. xviii-xxv). 

 This genus contains some of the most beautiful forms of Nebalia-like 

 Crustaceans, in which the bivalved carapace is borne upon the back 

 of the cephalothorax, with the lateral margins of the valves more or 

 less open, like a dorsal shield, as in Apus. The carapace in this 

 genus is variously and beautifully ornamented, sometimes by strise, 

 sometimes by puncta or reticulate raised lines, in others by scale-like 

 markings, and there are also raised lines and tubercles, reminding 

 one of the ornamentation seen in Pterygotus and Eurypterus. The 

 dorsal, lateral, and marginal ridges are likewise ornamented in 

 various degrees and form. Abdominal segments, to the number 

 of four, are seen in some examples projecting beyond the posterior 

 border of the cephalothoracic buckler, as in Nebalia. These also 

 are ornamented by waved lines, and terminate in three tail-spines, 

 stiff, pointed, and ridged like bayonets. Most of them are of 

 Carboniferous age, and occur in the coalfields of Scotland, Yorkshire^ 

 and Lancashire. 



