Reviews — Paloiozoic Cirripedes from Siveden. 559 



In the course of a brief survey of what has already been published 

 on the Silurian and Ordovician cirripedes of Sweden, the author 

 points out that the name Pollicipes validus, which C. W. S. Aurivillius 

 in 1892 applied to a scutum from Gotland, was preoccupied by 

 Steenstrup for a Cretaceous species. For the Gotland fossil he 

 therefore proposes the new name P. auriviUii. It may here be 

 remarked, since Professor Moberg has not troubled to do so, that 

 recent work on Cretaceous cirripedes, especially that of Mr. T. H. 

 Withers, shows the high improbability, if not impossibility, of there 

 being in the Silurian any representatives of either Pollicipes or 

 Scalpelliim. 



The species described by Professor Moberg are referred to 

 Lepidocoleus, Tnrrilepas, and Plumulites, and he precedes his 

 description of them with a discussion of those three genera. 



For some reason British palaeontologists have persisted in regarding 

 Plumulites Barrande as a synonym of Tnrrilepas H. Woodward. In 

 both genera the visible plates are arranged in four vertical rows ; 

 but, as Professor Moberg points out, in Tnrrilepas these form two 

 principal rows of keeled plates and two outer rows of much smaller 

 unkeeled plates, all of which rows alternate with one another. In 

 Plumulites, on the other hand (to which genus Professor Moberg 

 I'efers the species generally known in this country as Turrilepas 

 scotica and T. peachi'), the so-called dorsal face shows a double row 

 of median plates unkeeled and abutting, not alternating; and on 

 each side is a row of large, kite-shaped plates. It is not easy to 

 describe tliese fossils in few words, but any one who will compare 

 the figures conveniently brought together on a single plate by 

 Professor Moberg will have no difficulty in appreciating their 

 complete difference of structure. 



From both of these genera Lepidocoleus Faber differs in being 

 composed of only two vertical rows of plates. Hitherto only three 

 species of this genus have been described, namely, the genotype, 

 originally known as Plumulites jamesi Hall & Whitfield, from the 

 Hudson River group of Cincinnati, Lepidocoleus sarlei J. M. Clarke, 

 from the Niagara Shales of New York, and Z. polypetalus J. M. 

 Clarke, from the Lower Helderberg Group of New York, Professor 

 ;Moberg now introduces a new species, L. suecictis, found in 

 Ostrogothia and in various localities in Dalecarlia ; he has presented 

 the British Museum with specimens from TJllnas (regd. I 16018- 

 I 16022), and describes a specimen already in the Museum collected 

 at Svalasgard, Skattungbyn, Dalecarlia (regd. I 14425). Since 

 Professor Moberg says that this is the first species known outside 

 North America, it may be as well to notify the existence of other 

 European species, namely, a large form detected by Mr. Withers 

 among our Wenlock fossils (Brit. Mus. 59058 and 55032), and one 

 from the Middle Devonian near Olmtitz, Moravia, submitted to me 

 as a cystid stem in 1912 by Dr. M. Renies. 



Of L. suecictis Professor Moberg gives good figures and a detailed 

 description, but excuses himself from a diagnosis or comparison 

 with other species on the ground that previous descriptions are not 

 precise enough. Examination of material in the British Museum 



