146 MESSRS. A. J. JUKES-BROWNE AND W. HILL : [May 1 896,. 



tiguous angular tubes which radiate outward and upward from a 

 central axis. It is a very abundant fossil in the basal part of the 

 zone of Ammonites Mantelli in Devon, especially at Dunscombe, 

 Weston, and at Beer Head. 



Specimens having been sent to Dr. G. J. Hinde, he reported that 

 they strongly resembled the Chcetetes ramulosus of Michelin found in 

 the Cenomanian of the Sarthe. Subsequently M. Bizet, of Belleme, 

 sent us a specimen found at Condrecieux (Sarthe), which appeared 

 to be the same fossil. Dr. Hinde informs us that d'Orbigny placed 

 Michelin's species as a polyzoan under the name of Ceriocava raniu- 

 losa ; but he thinks that when the specimens are more carefully 

 examined it will be found generically distinct from Ceriopora or 

 Ceriocava. 



In Morris's ' Catalogue ' (2nd ed. 1854, p. 120) it is placed under 

 Ceriopora and said to occur in the Greensand of Faringdon. 



Deeeancia (Pelagia) Etjdesii, Mich. 



This is another remarkable fossil, having a wonderful resemblance 

 to a small expanded cup-coral ; but it was recognized by Dr. Hinde 

 as the polyzoan above named, which Michelin describes as common 

 in the ' Craie chloritee ' of Yaches Noires and in the ' Gres vert ' of 

 Le Mans. Only one specimen has been found in the lowest layer 

 (Bed 10 of Meyer) of the Mantelli-zoiae near Branscombe. 



Micropoka. 



The two species of Micropora entered in the list of Devon 

 fossils, and numbered 4 and 5 respectively, are recognized by 

 Dr. Hinde as occurring also among the specimens collected from 

 the Chloritic Marl near Cape La Heve, although he is at present 

 unable to identify them as described species. 



Brachiopoda. 



Reynchonella dimidiata, Sow., and Hh. alata, Brong. 



In Guillier's ' Geologie de la Sarthe ' (1880), and in some of 

 M. Bizet's papers on the geology of the Orne and Sarthe, we find 

 Bhynchonella alata, Lam., stated to be a common Cenomanian shell ; 

 but Davidson ('Brit. Cret. Bracb.' vol. i. p. 82) mentions that 

 MM. d'Orbigny and Deshayes agree with him in considering the 

 Bh. alata of Lamarck as merely a synonym of Bh. vespertilio of 

 Brocchi. 



Later, in his ' Supplement,' when discussing Bh. dimidiata, 

 Davidson states that the names alata and gallina were given by 

 Brongniart to symmetrical forms of this shell, and dimidiata by 

 Sowerby to the unsymmetrical form. It is therefore the Bh. alata 

 of Brongniart, and not of Lamarck, which is the common Ceno- 

 manian shell. 



Both varieties are very abundant in the Cenomanian of Devon, 



