W. B. Lang — Cretaceous Cheilostoone Polyzoa. 437 



Dtoffnosis. — Incrusting, uniserial Cheilostome Polyzoa, normally 

 with bilatei'al branching; zocecia nionomorphic, divided into a 

 proximal caudal and distal capitular portion ; termen headed ; extra- 

 terminal front wall well developed proximally, plain with no median 

 ridge or groove ; intra-terminal front wall represented by a narrow 

 bevel, tending to become bioader proximally. 



Genotype. — Hippothoa irregularis, Gabb & Horn. 



Butrihution in time. — Danian. 



Remarks. — Hippothoa and Pyripora, to which genera the species 

 here placed under Allantopora liave been referred, differ, the former 

 in having a completely calcareous intra-terminal front wall, and the 

 latter in its method of branching and by the presence of avicularia. 



Key to the genus Allantopora. 



1 . Aperture comparatively large ; capitular portion of zooecium 



pyriform. A. irregularis (Gabb & Horn). 



2. Aperture comparatively small ; capitular portion of zooecium 



cylindrical. A. stotnatoporoides, n.sp. 



Allantopoea irregularis (Gabb & Horn). (PI. XXXIV, Fig. 1.) 

 Synony^ny. 



Hippothoa irregularis, Gabb & Horn, " Description of new Cretaceous Corals 



from New Jersey" : Proc. Acad. Nat. Sci. Philadelphia, vol. for 1860, 



p. 366. 

 H. irregularis, G. & H. : Gabb, " Descriptions o^ New Species of American 



Tertiary and Cretaceous Fossils": Journ. Acad. Nat. Sci. Philadelphia, 



ser. II, vol. iv, p. 400, pi. Ixix, figs. 18-20, 1860 ; Timber Creek, New 



Jersey. 

 Pyripora irregularis, G. & H. : Gabb & Horn, " Monograph of the Fossil 



Polyzoa of the Secondary and Tertiary Formations of North America " : 



Journ. Acad. Nat. Sci. Philadelphia, ser. II, vol. v, pp. 122, 157, pi. xx, 



fig. 40, 1862. 

 P. irregularis, Gabb & Horn : Meek, Check List of Invertebrate Fossils of 



North America, p. 3, 1864 ; New Jersey. 

 P. irregtdaris, Gabb & Horn : Conrad in Cook, Geology of New Jersey, 



p. 723, 1868. 

 P. irregularis, Gabb & Horn : Vine, " Fifth . . . Keport of the Committee 



... on Fossil Polyzoa" : Eep. Brit. Assoc, for 1884, p. 169, 1885; 



Timber Creek. 

 Hippothoa irregularis, Gabb & Horn : Nickles & Bassler, " A Synopsis of 



American Fossil Bryozoa " : Bull. United States Geol. Surv., No. 173, 



pp. 153, 154, 1900. Cretaceous : Timber Creek, New Jersey. 

 Pyripora irregularis (G. & H.) : Nickles & Bassler, op. cit., p. 157, 1900. 



Cretaceous : Timber Creek and MuUica Hill, New Jersey. 

 P. irregularis, G. c& H. : Johnson, "Annotated List of the Types of 



Invertebrate Cretaceous Fossils in . . . Acad. Nat. Sci. Philadelphia " : 



Proc. Acad. Nat. Sci. Philadelphia, vol. Ivii, p. 5, 1905. 

 P. irregularis, Gabb & Horn : Ulrich & Bassler in Weller, " A Report 



on the Cretaceous Paleontology of New Jersey": Geol. Surv. New 



Jersey, Paleontology, vol. iv, Cretaceous Faunas, pp. 167, 337, pi. xxiv, 

 ' fig. 5, 1907. Vincentown Limesand : North bank of Kancocas Creek 



north-west of Vincentown, Timber Creek, and near Mullica Hill, 



New Jersey. 



Revised diagyiosis. — Allantopora in wliich tlie capitular portion of 

 the zooecia is long compared with the caudal portion, pear-shaped, and 



