CEPHALOPODA. 
Distribution, 3 species. Upper Triassic strata of Hallstadt, 
Austria. 
Fig. 8. Shell and sutural lobes of Cochloceras Fischeri. 
4, CHORISTOCERAS, Hauer, 1865. 
Type, C. Marshu, Hauer. 
- Shell somewhat similar in form to Crioceras, with the lobular 
ornamentation characteristic of Ceratites. 
Distribution, 4 species. Upper Trias, Austria. 
5. CLYDONITES, Hauer, 1860. 
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Fig. 9. Shell of Clydonites costatus, Hau. Figs. 10a, 10b. Shell and sutural lobes of C. 
delphinocephalus, Hau. 
Etymology, kiudon, the surge, with the usual termination. 
Examples, Goniatites Eryx, Minst; Ammonites delphino- 
cephalus, Hauer. Figs. 9, 10. 
Shell, discoidal; sutures lobed; lobes entire, not crenulated 
as in Ceratites. 
Distribution, Upper Triassic strata, Hallstadt aud St, Cassian, 
in the Austrian Alps ; North-western Himalayas; 21 species. 
Upper Cretaceous, 2 species described as Ceratites by D’Orbigny. 
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