300 bulletin: museum of comparative zoology. 



31. Dinobolus schmidti Davidson. 



32. Eleutherocrania gibberosa Huene. 



33. Orthis sadawitzensis Wysorgorski. 



34. Pseudocrania cranoides Huene. 



35. Pseudometoptoma concentricum Huene. 



36. curvatum Huene. 



37. monopleurum Huene. 



38. Strophomena assmussi Verneuil. 



39. luna Tornquist. 



40. semipartita Roemer. 



41. Modiola devexa Eichwald. 



42. incrassata Eichwald. 



43. Cymbularia aequalis Koken. 



44. Murchisonia scrobicula Koken. 



45. spectabilis (Schmidt). 



46. Conularia cf. trentonensis Hall. 



47. Tentaculites anglicus Salter. 



48. Cyrtoceras angulosum Schmidt. 



49. Endoceras hasta Eichwald. 

 ,50. Orthoceras cuneolus Eichwald. 



51. exaltatum Eichwald. 



52. fenistratum Eichwald. 



53. ibex Eichwald. 



54. Ceraurus cf. glaber Angelin. 



55. Homolichas eichwaldi Nieszkowski. 



56. Platylichas docens Schmidt. 



The upper beds of the Lyckholm formation are best shown at Pirk 

 (Plate 2, fig. 2) and Saremois, the former about three miles northwest 

 of Herklill and the latter hardly more than a mile in the same direction. 

 Pirk consists merely of a watermill and a few houses and the exposure 

 is in a small cliff on the right bank of the creek, just below the mill- 

 dam. About nine feet of yellowish white and white limestones of a 

 somewhat chalky or marly consistency are shown, the sequence con- 

 sisting of alternations of slightly different varieties of the same kind 

 of rock and the whole having a somewhat massive appearance with 

 illy defined bedding. Through sun and frost action it spalls off with 

 conchoidal fracture. Fossils are quite common, corals comparatively 

 rare, large gastropods are the most abundant and the Maclureas were 

 collected near the base. 



Between Pirk and Kappa-Koil, at various localities on the higher 



