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By Spath L.F.

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Extra resources for Additional observations on the invertebrates (chiefly ammonites) of the Jurassic and Cretaceous of East Greenland. I. The Hectoroceras fauna of the S.W. Jameson Land

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Greenl. 55 Portlandian date, but unfortunately there is no sequenceknown (except possiblythat of Hartz Mtn. on Milne Land) where correspondingstrata could actually be seen in their relative positions. Whether Bodylevsky was right in consideringG. It is Behrendsen3), held,Hoplitesmendozanus, possiblethat as Bogoslowsky2) group of. The Blanlordiceras faunas of the Salt Range and Madagascar are probably equivalents though they include nothing ]ike the LrtaeRiasanites. ' pressulus,Bogoslowsky. ' clementianus, The last is a Subffaspedites;the first two seemto belong Lo Paraffaspedites, and they are comparable to forms known from the base of the spilsby sandstone of Lincolnshire.

9). This small form shows four conspicuoussteps causedby temporary arrest of growth, and the test thus appears to consist of five di{Ierent shells, overlappingone another. It is smooth at the umbo, but most of the rest of the shell has very fine concentric lines of grow[h. The hinge is not exposed,but the generalshapeis that of A. saentanni, P. A. curvirostris,Roemers),or at least the English Corallian examplesfigured by Arkell6) and doubtfullv attached 0o Roemer'sspecies,show similar growth-halts,but only three not four, and the shapeis much more oblique.

454, pl. xxxtt, fig. 1. 6) Monograph CretaceousLamellibranchia of England' Pal. Soc', vol. 2, p. , pl. vrrr, figs. 1-7. 6l Loc. cfi. (Mat. Geol. , vol. XVIII), 1897' p. 107. 34 L. F. Splrn. III Family MYALINIDAE. Genus BUCHIA, Rouillier, 1845. Buchia c'olgensis(Lahusen). P l a t e I , f i g . 9 ; P l a t e I I I , f i g . 6 ; P l a t e I V , f i g . 1 - 2 . 1888. Aucella t:olgensis,Lahusen; Uber die russischen Aucellen. Mdm. Com. , vol. VIII, No. 1, p. 38, pl. rrr, figs. 1-1?. Woods: Monograph Cretaceous Lamellibranchia 1905.

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