22 CATALOGUE OF 



Family PHRAGMOCERATIDiE. 

 Genus Phragmoceras, Broderip. 



< Range. 



476. P. hector ( ?), Billings ? 



Family LITUITID^. 



Genus Trocholites, Conrad. 



477. T. ammonius, Conrad 1 — ? 



478. T. circularis, Miller & Dyer near 5 



479. T. minusculus, Miller & Dyer below 2 



Family TROCHOCERATIDiE. 



Genus Trochoceras, Barrande. 



480. T. baeri, Meek & Worthen 6—7 



Family CYRTOCERATIDJ]. 



Genus Cyrtoceras, Goldfuss. 



481. C. amoenum, S. A. Miller near 7 



482. C. magister, S. A. Miller near 2 



483. C. ventricosum, S. A. Miller near 2 



484. C. vallandighami, S. A. Miller near 4 



LAMELLIBRANCHIATA. 



Family AMBONYCHIIDJ]. 



Genus Ambontchia, Hall. 



485. A. bellistriata, Hall 0—2 



486. A. (?) casei, Meek & Worthen 6— 1% 



487. A. costata, James 3 — 6 



488. A. obtusa, Hall ? 



489. A. radiata, Hall 1—7 



490. A. retrorsa, S. A. Miller %-A 



