Bibliographical Notices. 277 



used as subordinal designations instead of the misleading terms 

 Tessellata and Articulata ; and in accordance with this proceeding 

 the Marsupitidoe and Uintacrinida3 are restored to their proper 

 places among the Neocrinoids ; while a now family, Bourgueticri- 

 nidae, is very rightly established for Bourguetlcrinus^ Rhizocrinus, 

 and BatJiifcnnns, genera which differ considerably from the typical 

 Apiocrinida?. 



The remaining and by far the largest portion of the volume con- 

 tains descriptions of the Jurassic Eugeniacrinidte and Holopid?e, and 

 of the three principal genera of Apiocrinidse, viz. Giiettardicrinus, 

 Apiocrinus, and Millericrinus. Eleven species of Eugeniacrinus are 

 described, including four new ones, E. mayalis being from the Lias 

 and the remainder from the Oxfordien, Phyllocnmis is represented 

 by seven species, three being new, and Tetracrimis by one ; while a 

 new genus, Eudesicriniis, is established for a remarkable type which 

 has been referred both to Plieatocrinus and to Etu/eniacrinns, and 

 seems likely to find its true position among the Holopidre. Much 

 new and valuable information is given about the singular type Coty- 

 lecrimis, which has also been found in the Dorsetshire Lias ; and the 

 curiously abnormal Gymnocrinus is described from better material 

 than was available when the author worked out the fossil Crinoids 

 of Switzerland. Besides Ouettardicrinus fifteen species of Apio- 

 crinus, four of which are now described for the first time, occur in 

 the French Jurassic strata, while the genus Milhrkrinus is repre- 

 sented by no less than sixty-four species, of which twenty-six are 

 new to science. About one fifth of them are only known hy their 

 stems ; but these are as a rule very well defined, and seem to afford 

 good specific characters. 



The most interesting morphological point which has been brought 

 out by Mens, de LorioFs work is the presence of small undcrbasals 

 in two species of MiUericrinus. They do not appear at all upon 

 the exterior of the calyx, as they rest upon the central part of the 

 enlarged uppermost stem-joint and are concealed by tlie basals 

 outside them. But they seem to be well differentiated, though 

 relatively small ; and it is quite probable that they will ultimately 

 be found to occur in other species of the genus, though, as Mons. 

 de Loriol says, they are certainly absent in many which he has been 

 able to examine in detail, as his excellent figures show. 



All working palaeontologists must be grateful to him for tliis most 

 useful book and will welcome the appearance of the next volume, 

 which will deal with the Pentacrinidjo and Comatulida), families 

 which are both well represented in the French Jurassic strata, as 

 indeed also in those of our own country. 



The name of Mr. Charles Wachsmuth, of Burlington, Iowa, is so 

 well and so favourably known to every student of the Pelmatozoa 

 that the appearance of a new section of the ' Bevision of the Pal^eo- 

 crinoidea ' by himself and Mr. F. Springer is an event of considerable 

 interest. Parts I. and II. were published in the years 1S79 and 

 lySl respectively. The first and most important section of Part III., 

 which appeared at the close of last year, contains a discussion of 

 the classification and relations of the brachiate Crinoids, together 



