1865.] STOLICZKA INDIAN CEETACEOUS CEPHALOPODA. 409 



will very probably be altered during some future examination of the 

 country. 



I have previously remarked, that in its total aspect the character 

 of the fauna is Cretaceous. Indeed, none of the genera, except 

 Ammonites, are represented by species which exhibits any remark- 

 able difference from European Cretaceous forms, even if they are not 

 identical with already known fossils. The Ammonites themselves 

 retain in general a true Cretaceous character in the groups of the 

 Cristati, Rotliomagenses, Mammillati, and Ligati, which are strongly 

 prevalent ; but there are other groups also represented, which have 

 been only doubtfully or not at all noticed in Cretaceous deposits 

 elsewhere. It is so far true that these foreign groups count only 

 few species, and that even these are usually not numerous in indi- 

 viduals, but still they are very characteristic. I have to notice one 

 species of the Plamdati and four species of the Macrocephali, all in 

 aspect very much resembling Jurassic forms. Of the Fimhriati there 

 is, among others, one species which has the most striking resem- 

 blance to A.fimhriatus. 



The group Lcevigati was established by Prof. E. Forbes, and some 

 of its members are a good deal like the smooth species of the Liassic 

 Falciferi: A. opcdinus, and others. The most striking and abnor- 

 mal among the Ammonites, however, are three species of the Triassie 

 group Glohosi. When I at first examined these species, I was so 

 much struck with their similarity to Alpine Triassie Ammonites, that 

 I could not help doubting their real Cretaceous age. However, the 

 occurrence of other unquestionably Cretaceous fossils associated 

 abundantly vsdth them, not only in the same locality, but some of 

 them even in one and the same piece of rock, left of course not the 

 slightest doubt that they are truly Cretaceous fossils. Eor further 

 particulars I must refer the reader to the descriptions and figures 

 in the ' Palseontologia Indica' (3 ser.), as I could only repeat the same 

 here. 



The next question which has to be answered is. What relation 

 do the Indian Cretaceous Cephalopoda bear to the European* ? 



We do not need for this purpose to quote nominally all the species 

 which have been describedf ; but a list of those which are identical 

 with already noted fossils will, no doubt, prove interesting. 



* There ai-e only two species identical with American forms. 



t I avoid such a complete list purposely, because I could not help mentioning 

 names of new species without being able to give the necessary descriptions and 

 illustrations. It is indeed very much to be regretted that even at the present 

 time the publication of new names of species without any further references is 

 still in use by some naturalists, whose best intention is undoubtedly to avoid 

 confusion {vide Quart. Journ. Geol. Soc. vol. xx. pp. 387 & 388). Of what 

 use are these names to the working geologist, and what to the palseontologist ? 



