88 REPORT—1868. 
new species of this genus in the Dunstable. chalk, and another in the chalk of 
Sussex. There are thus three species of Car yophyllia i in the Upper Chalk of 
England :— 
1. Caryophyllia cylindracea, Reuss, sp. 3. Caryophyllia Tennanti, Duncan. 
2. —— Lonsdalei, Duncan. 
Caryophyllia Lonsdalet, Duncan. 
The corallum has a large and incrusting base, and the stem is cylindro- 
conical and straight. There i is a slight curve near the base. The calice is 
circular, small, not very open, and moderately deep. The columella is small, 
and is terminated by rod-shaped processes. The septa are slightly exsert, 
the primary especially. There are three complete cycles; and the septa of 
the higher orders of the fourth cycle are not developed in every system. The 
primary, secondary, and tertiary septa are very much alike. They have a 
wavy inner edge and are granulated. The pali are situated before the ter- 
tiary septa, and are knob-shaped, and rather flat from side to side. The coste 
are nearly equal at the calicular margin, and pass downwards as flat, band- 
like prominences, separated by shallow intercostal grooves. They are con- 
tinued to the base, but are hidden midway by an epithecal growth. 
Height of the corallum 3 inch. Breadth of the calice } inch. 
Locality. Dunstable. 
In the collection of the Rey. T, Wiltshire. 
This species is readily distinguished by its coste, and is more storey, allied 
to C. cylindracea than to any other form, 
Caryophyllia Tennanti, Duncan. 
The corallum has a large base, a curved cylindrical stem, and an inclined 
elliptical calice. It is short in relation to its broad base. The calice is open 
and shallow. The columella is small, and terminates in twelve knob-shaped 
endings to the fasciculi. The septa are unequal, and there are five incom- 
plete cycles. The laminz are marked with curved lines of granules, are wavy 
and unequal. The pali are longer than the columellary processes, are wavy, 
flattened, and curved. The costs are subequal in the upper third, but are 
not seen below. 
Height 13 inch. Length of calice 2 inch. 
Locality. Sussex, Upper Chalk. 
In the collection of Professor Tennant, F.G.S. 
This species connects the Tertiary and recent Caryophyllie with those of 
the Cretaceous system. 
Division TuRBINOLIACER, 
Gen. nov. ONcHOTROCHUS. 
The corallum is simple, tall, slender, rather hook-shaped or clavate, and 
presents evidence of irregular growth. 
There is no endotheca. The costs are rudimentary, and there is no colu- 
mella, The septa are few innumber. The epitheca is pellicular and striated. 
The genus is somewhat allied to Smilotrochus, Stylotrochus, and very dis- 
tantly to Flabellum. 
Onchotrochus serpentinus, Duncan. 
The corallum is tubulate, curved superiorly, and straight, and tapering in- 
feriorly. There is a sudden diminution in the diameter of the upper part of 
the corallum. The coste are quite rudimentary. The epitheca is marked 
with fine transverse striations. The septa are continuous with what appear 
to be rudimentary intercostal spaces. The lamine are twelve in number ; 
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