S G. LINDSTRÖM, THE ASCOCERATIDAZE AND THE LITUITIDA. 
1837 Lethea Suecica seu Petrificata Suecie. The same species as enumerated in »Esquisse> 
1829 are here described and figured, with exception of O. lineatus, which is not 
mentioned at all, but there is a figure of it in the Supplement, pl. XXXVI fig. 1 
»Forma elongato-conica etc.» the same as he called Scyphia empleura in part 5 of 
»Anteckningar». In the same Supplement p. 113 pl. XXXV f. 1 there is a cast of a 
Trochoceras figured, »Testa ovato-oblonga» etc. without specific name. Euomphalus 
costatus is here named Inachus costatus. Lituites lituus is said to belong also to 
the Silurian of Gotland, having been found there in an erratic block. 
1840 »Anteckningar» etc. part 7. The same species are again enumerated and we have 
a new name, O. nodulosus, instead of O. lineatus, this name having been given to a 
Lower Silurian fossil. There is also Goniatites? Dalmani instead of Ammonites Dalmani. 
1841 »Förteckning öfver en geognostisk och petrefactologisk samling från "Sverige och 
Norrige, tillägnad Kongl. Vetenskaps-Academien af en dess Ledamot.» This catalogue 
was published anonymously, but by comparing it with the other works of HIiSINGER, 
it can not be in the least doubted that it is from his hand. As itis the last paper 
he published, we may here sum up the results of his contributions to the knowledge 
of the Silurian Cephalopoda of Gotland, by enumerating them all: 
1. Nautilus? complanatus. As SowErBY already in 1820 had published a Nau- 
tilus complanatus, D'OrRBIGNY in Paléont. Universelle (Paléont. étrangére pl. 
41) renamed it as Naut. Hisingerii. This name must be kept, as the shell 
is a real Nautilus and not a Phragmoceras, as BARRANDE supposed. 
2. Orthoceratites angulatus WAHLENB. 
3. » imbricatus His. (uncertain if the same as WAHLENBERG'S; Hi- 
SINGER'S is identical with Örth. pseudo-imbricatum BARR.) 
4. » undulatus His. (O. annulatum Sow). 
5: » annulatus His. (O. Hisingeri BoLr.). 
6. » crassiventris WAHL. (O. cochleatum SCHLOTH.). 
(fe » nodulosus Hrts. 
8. Inachus costatus His. Was by him regarded as a Gastropod, but is in 
reality a 'Trochoceras. 
Ammonites Dalmani His. was held by him to be derived from Gotland. The origi- 
nal specimen evidently had been early deposited in the collections of the »Bergs-Collegium> 
at Stockholm along with other foreign fossils and wrongly labelled as coming from Got- 
land. Herr Amtsrath C. STRUCKMANN in Hannover who recently examined HIsInGER'S Spe- 
cimen declares that it without the least doubt is a variety of Ammonites gigas and is 
found in the Upper Jurassic strata near Hannover. 
E. vOoN ScHLOTHEIM describes Örthoceratites cochleatus for the first time in »Bei- 
träge zur Naturgeschichte der Versteinerungen in geognostischer Hinsicht> (Taschenbuch 
för die gesammte Mineralogie von Leonhard 7:r Jahrg. 1:e Abth. 1813 p. 34). 
1820 Die Petrefactenkunde; at p. 55 he describes an O. undulatus probably a fragment 
of a large Trochoceras. O. cochleatus is again described. 
1822 Nachträge zur Petrefactenkunde; p. 58 O. undulatus and figure I a—b pl. XI. 
