CARBONIFEROUS PERIOD. 



349 



lateraria, from the Upper Coal measures, Kentucky. Pecten [Aviculopecteti] 

 aviculatus Swallow, Kansas, - Pinna per acuta Shuni., Missouri, Kansas; Lima [?] 

 retifera Shum., Kansas ; Mytilus [Modiola ?~\ Shawneensis Shum., Kansas. 



(c.) Gasteropoda. — Fig. 598, Bellerophon carbonarius Cox (often referred to 

 B. Urii), Upper Coal, Kentucky; fig. 597, Pleurotomaria tabulata; fig. 599, P. 

 spherulata; fig. 600, Macrocheilus ? fusiformis ; Murchisonia minima Swallow, 



Figs. 597-601. 



Gasteropobs.— Fig. 597, Pleurotomaria tabulata ; 598, Bellerophon carbonarius ; 599, Pleu- 

 rotomaria spherulata ; 600, Macrocheilus ? fusiformis; 601, Dentalium obsoletum. 



Missouri; fig. 601, Dentalium mbsoletum. Also the Land-snail (Helix family) 

 Piqya vetusta Dawson (fig. 601 A), half an inch long ; from the Coal measures 

 of the Joggins, Nova Scotia. It is made a new genus, Dendropupa, by Owen. 



(d.) Cephalopoda. — Nautilus Missouriensis Shum., Lower Coal measures, N.pla- 

 nivolvus Shum., Upper C. M. ; Goniatites politus Shum., near Middle C. M. ; G. 

 parvus Shum., Upper C. M. ; Orthoceras aeuleatum Swallow, Upper C. M. ; O. 

 moniliforme Swallow, Upper C. M., — all from Missouri. 



4. Articulates. — (a.) Worms. — A species of Serpula of the genus Spirorbis, 

 Coal beds of Nova Scotia. 



(b.) Crustaceans. — Trilobites: Phillipsia Missouriensis, P. major, P. Clifton- 

 emis, — all described by Shumard, — from the Upper Coal measures of Missouri. 



Fig. 601 A. 



Fijr. 602. 



Fig. 602 A. 



Fig. 601 A, Pupa vetusta (X 1); 602, a, Myriapod: Xylobius Sigillariae; 602 A. Insect-Wing, 

 Blattina venusta. 



Ostracoids : Beyrichia Americana Shumard, from Missouri. Tetradecapods : 

 species of Amphipods from Illinois, and of Isopods from Nova Scotia. 



(c.) 3Iyriapods. — Fig. 602, Xylobius Sigillarice Dawson, from the Coal mea- 

 sures of Nova Scotia, and supposed to be related to the modern lulus ; a, organ 

 (labrum ?) with its palpus, pertaining to the mouth, enlarged. The species must 



