100 Frederick Cliapmaa : 



List of genera and species herein described : — 

 Siqjhotwtrtta jdicafelhi, sp. nov. 

 Crania pulcJielloides, sp. nov. 

 Leptaena rhomboidalis, Wilckens sp. 

 Lepfaena rhomboidalis, var. undata, McCoy. 

 CJiotietes hipartita, sp. nov. 

 Gonchidium knighfii, J. de C. Sowerby 

 Clorinda linguifera, Soav. sp. var. wilkiii.so)ii, Etheridge fil'.. 

 Gyjndula victoriae, sp. nov. 



Atrypa reticularis, Linne sp., var. decurrens, var. nov. 

 Atrypa aspera, Schlotheim sp. 

 Atrypa fimhriata, sp. nov. 

 Cyrtina suh-hiplicata, sp. nov. 

 Spirifer lilydaleiisis, sp. nov. 



SYSTEMATIC DESCRIPTION OF THE FOSSILS.. 

 Class Brachiopoda. 



Fam. SiPHONOTRKTIDAE. 



Genus Siphonotreta, de Verneuil. 



Siphonotreta plicateMa, sp. nov. Phite X., figs. \a-c. 



Description. — Pedicle valve subrectangular. transverse; posterior 

 margin broadly convex, cardinal angles rounded; anterior margin- 

 nearly straight, with a median sinns. Pedicle opening close to- 

 posterior margin, apical, and communicating with a short, open 

 channel directed anteriorly; a median wrinkle denotes the position 

 of the underlying pedicle tube. Shell folded into three areas, two- 

 postero -lateral depressed-convex areas, and an anterior median and 

 sunken area. Surface ornament consisting of concentric laminar 

 folds and vertical striae; the latter probably representing remnants 

 of short, spinous processes; also a few corroded and broken tubular 

 cavities with jagged edges pointing to the former presence of several 

 long spines. 



Measurements. — Holotype. Length, .'5.5 mm.; widtli, 5 mm.; 

 height, approxinuitely, 1 nun. 



OhHervations. — The present species is definitely placed in the 

 above genus, Siphonntrefa, on account of the apical foramen and 

 spinous character of tht' sliell. Tlie transvi-rse rhaiarter of the out- 

 line is someAvhat peculiar for Sip/io/iufrtfd, ))ut tliis may lie almost 

 matched in some varieties of .S'. oiisfraJi.s, Chaiunan,! from the 



1 Proc. Kov. Soc. Viftoiia, vol. xvi. (ii.s.), pt. i., 19ua, pp. (ifi, 00, pi. x., fi^s. 7, S, 13; pi. xi.,. 

 ftiJ- 1- 



