Scientia Sinica

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EXPLANATION OF PLATE V

Welierella subdekalbensis Wan) (Spy DOV) Gets oe ee ees p. 174 1,2,3,4,5: Ventral, dorsal, lateral, anterior and posterior views of complete specimen, note short and strong plications, % 3, holotype, I.P.A.S. 8018.

Penhsi Series, Middle Carboniferous; south of the second tunnel, Tsuichiakou, Yentai Colliery, Liaoning Province.

Camarotoechia fengkangensis Wang (Gps NOVA) ee ee a p. 170 1,2,3,4,5: Ventral, dorsal, posterior, lateral and anterior views of complete specimen showing ornamentation, < 1.5, holotype, I.P.A.S. 8013. :

Lojoping Series, Middle Silurian; Changshengkou, Chahuaping Village, Fengkang District, Kweichow Province. i : ; Hypothyridina hunanensis Wang (Gop Wen) Geos ances ee ee ee eee ce eee p. 172 1,2,3,4,5: Ventral, dorsal, lateral, posterior and antcrior views of complete specimen showing general form and ornamentation, 1.5, holotype, I-P.A.S. 8016.

Lungkouchung Bed, Middle Devonian; Lungkouchung Village, Hsiang-hsiang District, Hunan

Province. : Paurorhyncha depressa Wang (Spynova)) | eee ae ee p. 172 i,2,3.4,5: Ventral, dorsal, lateral, anterior and posterior views of complete specimen showing lenticular lateral profile and short lingual prolongation, X 1, holotype, 1.P.A.S. 6015.

Upper Devonian; Itate, Pohsi, Huaning District, Yunnan Province. ;