BIBLIOGRAPHY OF PALAEOZOIC CRUSTACEA. 19 



Belt (Thomas). On some new Trilobites from the 

 Upper Cambrian rocks of North Wales. 



In Geol. Mag., vol. 4, London, 1867, p. 294, pi. 12. 



Agnostus pisiformis Linne var. obesits, A. nodosus n. sp. Olenus gibbosus. 



On the Lingula flags or Festiniog group of the 



Dolgelly district. Part iii. 



In Geol. Mag., vol. 5, London, 1868, p. 5, pi. 2. 



Conocoryphe ? williamsonii n. sp. C. ? longispina n. sp. C. ? bucephala 

 n. sp. Sphcerophthalmus bisulcatus Phil. Agnostus obtusus n, sp. A. tri- 

 sectus Salt. A. barlowii n. sp. 



Bergeron (M. T.) Etude paleontologique et strati- 

 graphique des terrains anciens de la Montagne Noire. 



In Bull. Soc. Geol. France, 3rd series, vol. 15, 1887, No. 5. 

 Harpes. Phacops. Cheirurus. 



Bergeron (Jules). Sur une formes nouvelle de Trilo- 

 bite de la farnille des Calymenidae (genre Ccdymenella) . 



In Bull. Soc. Ceol. France, 3d series, vol. 18, 1890, p. 365, plate 5. 



Calymene declinata Barr. Homalonotus delphinocephalus Green. Caly- 

 menella boisseli n, sp. C. bayani Trom. & Lebesc. 



Diagnosis of Calymenella: Glabella slighly convex, rounded in front, 

 having three furrows, of which the last two are well marked. The poste- 

 rior furrow is inclined towards the rear, lobes slightly elevated, fixed 

 cheeks wide, limb well developed in front of the glabella sometimes end- 

 ing in a point. Pygidium the same as Calymene. 



This genus includes within its limits the American species Calymene 

 rostrata Vogdes, and C. nasuta Ulrich. 



Beushausen (Louis). Beitrage sur Kenntniss des ober- 

 harzer Spiriferensandsteins und seiner Fauna. 



Inaugural-Dissertation. Gottingen, 1884, p. 31. 



Liste der aus dem Oberharzer Spiriferensandstein beschriebenen Arten 

 ihrer Verbreitung im rheinischen Unterdevon. 



Beyrich (Ernst). Ueber einige bohmische Trilobiten. 

 Berlin, 1845, 1 pi. 



Cheirurus n. g. Sphcerexochus n. g. Trochurus n. g. 



Cheirurus insignis n. sp. C. claviger n. sp. C. sternbergii Boek. C. 

 gibbus n. sp. Sphcerexochus mirus n. sp. Lichias laciniata (Loven.) L. 

 scabra n. sp. L. boltoni Green. L. dissidens n. sp. Trochurus speciosus 

 n. sp. Bronteus umbellifer n. sp. B. palifer n. sp. B. campanifer n.sp. 

 B. laticauda Wahl. Battus integer n. sp. B. nudus n. sp. 



