388 R. F. Tomes — Inferior Oolite Madreporaria. 



The Corals of Beds 2, 3 and 4 have already received attention, but 

 those of Bed No. 1, have not been made known. It appears, how- 

 ever, to be very poor in species, only three having as yet been noted. 

 They are, Isastrcea tenuistriata, Isastrcea sp. undetermined, and 

 Thamnastrcea sp. undetermined. 



The following are the species from the Inferior Oolite of the 

 counties of Dorset and Somerset which I have met with up to the 

 present time, with their several localities, and, as far as determined, 

 their Ammonite zones. 



Discocyathus Eudesi. Burton Bradstock, probably in the zone of 

 Ammonites ParMnsoni ; Corton Denham, Somerset, in the zone of 

 Am. Murchisoni. 



Trochocyathus magnevillianus. Half-way house near Yeovil, in 

 the zone of Am. ParMnsoni ; under cliff, Burton Bradstock, probably 

 in the same zone ; in the " Marl Bed " at Bradford Abbas, in the 

 bottom of the zone of Am. ParMnsoni. 



Trochocyathus sp. A small conical species not yet determined, 

 obtained by Mr. S. S. Buckman from the Bradford Abbas quarry, 

 but the position not recoi'ded. 



Thecocyathus discus, E. de From. Burton Bradstock, the zone 

 not noted, but associated with specimens of Discocyathus Eudesi, which 

 ■were stated to have been taken from the zone of Am. ParMnsoni. 



Thecocyathus, a species undetermined, obtained from the "Marl 

 Bed " at Bradford Abbas by Mr. Buckman. 



Montlivaltia lens. Bradford Abbas railway-cutting, in the zone of 

 Am. Murchisoni, immediately overlying the sands ; Castle Cary Hill 

 in the zone of Am. ParMnsoni; Corton Denham, Somerset, in the 

 zone of Am. Murchisoni; and in the zone of Am. Sowerbyi, at 

 Bradford Abbas. 



Montlivaltia de la Bechei. Bradford Abbas railway- cutting, in the 

 zone of Am. Murchisoni; Drimpton near Broadwinsor, Dorset, in 

 the zone of Am. ParMnsoni ; Castle Cary Hill, Somerset, in the zone 

 of Am. ParMnsoni ; Bridport, the zone not noted. 



Montlivaltia tenuilamellosa. A single specimen has been sent to 

 me labelled Bradford Abbas, but it has more the appearance and 

 colour of Burton Bradstock specimens. 



Montlivaltia cupuliformis. Bradford Abbas, in the paving-bed at 

 the top of the zone of Am. Murchisoni, where it is not uncommon. 



Montlivaltia sp., undetermined, occurs with the last, and may 

 perhaps prove to be identical with it. 



Isastrcea, sp. Not determinable. From the paving-bed at Bradford 

 Abbas. 



Latimceandra Flemingi ? A species very nearly allied to, or 

 identical with this, occurs in the paving-bed at Bradford Abbas, and 

 is remarkable from having a thick and wrinkled epitheca. 



? A compound coral having calices in shape like those of 



an Isastrcea, with confluent septa, and a columella, occurs at Bradford 

 Abbas, but the zone has not been determined. 



Thecoseris polymorpha. Several small specimens referable to this 

 species have been taken from the paving-bed at Bradford Abbas, 

 and I have one from the Inferior Oolite at Stoford, Somerset. 



