MIOCENE M0LLU8CA OP LAKE URMr. 437 



Peclen Tournali, Serres. 



suhopercularis, n. sp. 



Malvincd (allied), Dubois. 



Gasteropoda : 



Turritella ArcMmedis, Brongu. 



turris, Orbigny. 



rotifera, Desh. (allied to). 



■ gradata, Menke, var. 



margariia, n. sp. 



These species are additional to those cited in Abich's work 

 of 1858, which were mostly obtained from the islands on Lake 

 Urmi ; with the following alterations in nomenclature : Pecfen 

 maximus to be P. Tournali, Serres; P. simplex to be P. Hol- 

 geri, Greinitz. 



Dr. Eodler * in 1888 reported the occurrence of Jurassic fossils 



at the following localities off the eastern side of Lake Urmi : 



Aktahu-dere, Tazeh-kend, Ilditsch, Guschaisch, and the Karangu 

 Valley. The genus Harpoceras, which was found in the Karangu 

 Valley, he regarded as indicative of Middle or Upper Lias ; 

 whereas Perisphinctes from the other localities might belonw to 

 either the P. polyplocus-zorxQ of Kimeridge age or the P. curvi- 

 costa-zone, which is Callovian. Eodler's researches also includes 

 a chapter on the origin of Lake Urmi. 



This was followed in 1890 by a memoir from Dr. K. Anton 

 "Weithofer t on the Jura and Cretaceous rocks of North-western 

 Persia, in which the following Molluaca are described and par- 

 tially figured, as having been collected to the east of Lake 

 Urmi (Guschaisch and Tazeh-kend) in the neighbourhood of 

 Maragha: — 



Uppee Lias : 



Sarpoceras cf. radians, E-einecke. 



cf. kurrianum, Oppel. 



Pelemnites sp. indet. 



Pecten cf. discijbrmis, Schiibler. 



Pleuromya sp. indet. 



* RoDLEE, Dr. Alfred. — "EinigeBemerkungenzur GeologieNordpersiens," 

 Sitzunsgb. K. Akad. Wiss. (Wien), 1888, vol. xcvii. pt. i. pp. 203-212. 



t 'Weithofer, Dr. K. Ant.— "Ueber Jura und Kreide aua dem nordwest- 

 licbenPersien," Sitzungsb. K, Akad.Wiss. (Wien),1890, vol. scviii. pt. i. pp. 75G- 

 773, pis. i. & ii. 



