ON THE BRITISH FOSSIL CORALS. 95 
The following is a list of the published species (1850). 
1. Peplosmilia Austeni, Hd. & H. 3. Parastriea stricta, Hd. § H. 
2. Trochosmilia tuberosa, Ed. & H. 4. Micrabacia coronula, Goldfuss, sp. 
In their ‘ Hist. Nat. des Corall.’ vol. 13., MM. Milne-Edwards and Jules 
Haime make some alterations in the synonyms of the genera, and add a 
species to the list. They do not give any further information respecting 
some doubtful species noticed by Messrs. Godwin-Austen and Prof. Morris. 
Their amended list is as follows. 
1. Peplosmilia Austeni, Hd. g H. 4. Favia striata, Hd. § H. 
2. Smilotrochus tuberosus, Ed. g& ZH. 5. Micrabacia coronula, Goldfuss, sp. 
3. Austeni, Ed. & H. 
Specimens belonging to the following species have been submitted to me. 
1. Onchotrochus Carteri, Duncan. 4. Cyathophora monticularia, D’ Orbigny. 
2. Smilotrochus elongatus, Duncan. 5. Favia minutissima, Duncan. 
3. —— angulatus, Duncan. 6. Thamnastrzea superposita, Michelin. 
Trochosmilia tuberosa, Ed. & H., was found to be without endotheca, and 
therefore to be of necessity included amongst the Turbinolide. The genus 
Smilotrochus was determined in order to receive the species. 
Genus Smitorrocuts, Ed. & H. 
The corallum is simple, straight, cuneiform, free, and without trace of for- 
mer adhesion. There is no columella, the wall is naked and eostulate. There 
is no epitheca, and the simple cost are distinct from the base to the calice. 
This is the simplest form of Aporose Zoantharia; and its structures 
are confined to a wall, septa, and cost. Flabellum has an epitheea in 
addition, and Stylotrochus of De Fromentel is a Smilotrochus with a styliform 
columella, the septa uniting also by their thickened internal margins. 
Onchotrochus, nobis, has a pellicular epitheca, no columella ; but, like Stylo- 
trochus, the septa are united internally. 
1. Smilotrochus tuberosus, Ed. & H. 
Trochosmilia tuberosa, Ed. & H. 
Turbinolia compressa ? Morris. 
This species with five cycles of septa was described in the ‘ Monog. of the 
Brit. Foss, Corals,’ Upper Greensand, Milne-Edwaré and Jules Haime (Pal. 
Soe.). 
2. Smilotrochus Austeni, Ed. & H. 
This species is described in the ‘ Hist. Nat. des Corall.’ vol. ii. p. 71. 
The corallum is regularly cuneiform, very compressed below, and slightly 
elongate. The calice is elliptical, the summit of the larger axis rounded; 
forty-eight coste, subequal, straight, fine, and granular. 
Height of the corallum about 4 inch. 
Locality. Farringdon. 
MM. Milne-Edwards and Jules Haime do not mention where the speci- 
men is. 
3. Smilotrochus elongatus, Duncan. 
The corallum is tall, straight, and nearly cylindrical. The columellary space 
is large. The septa are fine and unequal, especially in length; there are 
four cycles of septa. 
Height about an inch. 
Locality. Upper Greensand of Cambridgeshire. 
In the collection of James Carter, Esq. 
