BIBLIOGRAPHY OP PALAEOZOIC CRUSTACEA 115 



Vogdes (A, W.) Notes on Palu'ozoic Crustacea, No. 3. ('arl)onifer- 

 ous Trilobites from i\rissouri. 



Proc. Cal. Acad. Sci., 2nd ser., vol. 6, 1S96, p. 197, Hg. in text. 



Proetiis ? placidiis nov. 



This species from Chouteau limestone of Sedalia lias tiie lateral lobes of the pvfjidium 

 smooth, similar to the Silurian species of France named by Rouault Calymmrnc Ara^o 

 and C. Salferi. although it belongs to a different group of the Proetidae, with only 

 nine thorax segments. The head is parabolic in form, gerial angles roimded. The 

 eyes are similar in location to those of P/:il/ipsifi Stimpsoni from tiie same locality. 

 The tail has eight axial joints with indications of two faintly defined segments on the 

 lateral lobes. 



The genus Knerinurus : its history, its speeies, its proper di- 

 vision in the family of Trih)])ites. 



Trans. San Diego Soc. Mat. Hist., vol. 1, 1907, No. 2, pp. 61-82, plates 1-3. 



The author divides the family into two divisions: 



Encrinurus. Genotype E. punclalus Wa\\\. 



Cryptonymus. Genotype C. variolaris Brong. 



Although Eichwald used t^lis term in 1825 for certain Asaphidae and Illaenidae, he 

 used the same term in 1840 for sucli species as ('filymmrnr pututalus aiul C'. variolaris, 

 which was adopted by Angelin. The te.m should stand under tlie strict rule of 

 priority for the second use of the term. 



Cryptonymus Eichwald, 1840. 



The author uses it for the second species included by Eichwald in 1840. Figures 

 and descriptions of Encrinurus punctatus Walh., E. viiiilans Mall, E. ornaius H. & \V., 

 E. Threcheri Foerste, E. Trentonensis Wale, E.. ncrcus Hall, E. Ea};ani Miller, E. 

 Americanus Vogd., E. sex-rostata Salt., E. dclitidrs Shumard, E. BarranJri DeKon., 

 E. Mitchelli Foerste, E. schisticnla Tornq., E. Srchac/ii Schm., E. mulli-seiimatus Portl., 

 E. fallax Reed, as given. 



I'nder the genus Cryptonymus the author includes Cryptonymus variolaris Hrong., 

 C. expansa Hasw. Henderson, 1868, refers the free cheeks of Zrtlius Fayrii Haswell, 

 to E. expansus. C. obtusus Aug., E. raricostatus Wal., (^. lacvis Ang., Encrinurus 

 Bo-wningi Foerste, E. tuberculatus Collie. 



Certain species described by Barrande under tiie genus Cromus have been referred 

 by Novak to the genus Encrinurus on account of the direction of the facial sutures, 

 which are the same in both genera. They are Cromus Beaumonti, C. Boliemicus, C. 

 transient and ('.. intercosfatus. The Encrinurus Novaki Freeh, lias been referred to 

 Encrinurus Beaumonti var., Xovaki by (jornani and Le Regn\-. 



Remarks tlie name of Encrinurus punctatus lias often been applied to a common 

 Scandinavian species, first illustrated by Wahlenberg in an advanced publication of his 

 paper in 1818. Petrificata telluris Svencanae, Bruimich's fossil from Boiiemia, from a 

 soft yellow limestone, may be the Cromus Beaumonti Barr. The author remarks, in 

 his paper, on two very imperfect petrified impressions of this fossil, that it had across 

 the fossil body im;pressed spotted rings, which marks are sufticient to distinguish them 

 from other species. The size of it seems to vary greatly, as my collection contains one 

 small and one very large back part of this species; each has 18 joints. The only 

 Bohemian Encriinirid^ recorded are those described under Cromus iiy Barrande and 

 Novak. 



Verneuil (K.) Observations sui' la deseripticn tie (|uel(|ue Ti-ili)l)ites 

 russes par M. A. de V'olborth. 



Bull. Soc. (ieol. de France, 2nd ser., vol. 5, 1848, p. 3S4. 

 Review of l^r. \'oIborlh's paper on the genus Zetlius. 



