Professor J. W. Gregory — New Cretaceous Bryozoa. 63 



Desmepora pinnigera, n.sp. 

 Diagnosis. — Zoarium composed of short, thick, somewhat swollen branches, which 

 rarely subdivided and are frequently arranged in a cross. There may be five arms. 

 The zoarium is attached by a short peduncle and base. The sides are marked by 

 a series of ridges, which extend across the whole width of the side. Apertures 

 arranged along the lateral ridges ; the apertures are biserial or rarely triserial, and 

 there are usually from five to seven in each row. Obverse face of the zoarium 

 concave. The spaces between the raised groups are marked by rows of small, round 

 pores (cancelli) between horizontal ribs. 



Bistrihution, — Upper Chalk: Beachy Head; Dover; Burham, 

 Kent ; Sussex. Middle Chalk (zone of Micraster cortestudinarium) : 

 Chatham ; Rochester. Lower Chalk (zone of Holaster planus) : 

 Dover. 



Desmepora reussi, n.sp. 



Synoxymy. — Desmepora semicijlbidrica, von Eeuss, 1872. Bry. Tint. Planer: 

 Palasontogr. , vol. xx, pt. i, p. 123, pi. xxx, figs. 6 and 7, non fig. 8. 



Diagnosis. — The branches are large, thick, and irregular, and form a short, stout, 

 bushy zoarium. The peristomal groups project as large, blunt knobs ; they are 

 usually elliptical or subcircular, and contain from thirty to fifty apertiu'es. They 

 are scattered irregularly over the stems, being sometimes in the middle of the stems. 

 Surface ornamented with long ribs. 



Distribution. — Cenomanian — TJnter Planer : Plauen, Saxony. 



TREPOSTOMATA. 



Reptomulticava, d'Orbigny, 1853. 



Beptomulticava canui, nov. nom. 

 Synonymy. 



JReptomulticava tuherosa, d'Orbigny, 1854. Bry. Cret., p. 1036, pi. 791, 



figs. 13, 14. 

 non Alveolites tnlerosa, Eomer, 1839. Verst. norddeut. Ool. Nachtrag, p. 14, 



pi. xvii, fig. 9. 

 Diagnosis. — Zoarium massive, tuberous, with small, irregular tuberosities on the 

 upper surface. Zooecia with circular or elliptical apertures, and walls varying in 

 width from one-fifth to occasionally one-half the diameter of the apertures. 

 Distribution. — Neocomian : St. Dizier and Vassy, Haute Marne. 



ReptomuUicava fungiformis, n. sp. 



Diagnosis. — Zoarium fungiform with broad, short stalk, which may be hidden by 

 the overgro^^iih of the broad upper surface of the zoarium. The side looks ringed 

 by the overlap of the expanding upper layers. Zocecia small ; the apertures in well- 

 preserved specimens are circular. About twelve apertures per sq. mm. 



Distribution. — Lower Greensand : Farringdon ; TJpware. 



Defranciopoka, Hamm, 1881. 

 Defranciopora libiformis, n.sp. 

 Diagnosis. — Zoarium of saucer-shaped or cup-shaped sub-colonies, with the base of 

 one resting in the cavity of the sub-colony below. The rims are well rounded and 

 wide. Apertures often in oblique series of three or four in a row, but in some parts 

 of the zoarium the arrangement is irregular. The sides of the sub-colonies, except 

 on the rim, are smooth and imperforate. 



Distribution. — Senonian — Maastrichtian : Maastricht. 

 Ceeiopoka, Goldfuss, 1827. 

 Ceriopora farringdo7iensis, n. sp. 

 Diagnosis. — Zoarium nodular with tuberous upper surface, and may be sub- 

 pedunculate below. The tubercles, which are sparse and low, pass into short, finger- 

 shaped lobes. Surface smooth, but weathered specimens may look variolated owing 



