20 
of this genus. This species is in the shape of a pointed five-sided 
cone, in the vertex of which are five small foramina, from which 
proceed five small areae, bordered on each side by biporous ambu- 
lacra ; the remaining space being filled by five larger areae. The 
mouth is small, somewhat retracted; and the anus sometimes in- 
clining to oval. This species is figured and described by most oryc- 
tologists, in consequence of the frequency with which it is found. 
But it exists nowhere, perhaps, in greater number, than in England ; 
particularly, according to Dr. Plott, in the southern counties, where 
the black flint most abounds. Plate II. Fig. 10, is a fossil of this 
species, from the Kentish chalk-pits ; and Fig. 11 is a representation 
of its under part. 
Leske refers the Echiniten pileatum, ore pentagono of Melle, Tab. 
i. Fig. 2, to this genus, considering it as its second species, which 
he distinguishes as Echinites depresms. The Globulus of Klein, Tab. 
xiii. Fig. c — k, and Tab. xiv. Fig. a — k, is denominated Echinites 
vulgaris by Leske, and considered as the third species. These fossils 
are in general not more than half the size of Conulus albogalerus ; 
and, like it, are divided into five large and five small area?, by ten 
ambulacra. In general, these fossils are merely casts, and do not 
retain sufficient distinctive characters to allow of their subdivision, 
even into varieties. These fossils, like the former, are described by 
almost every oryctologist, and are very frequently found in the gravel 
of different parts of England : they are the chelonites of Mercatus, 
and the brontice and omhriee of many authors. Plate II. Fig. 3, is a 
fossil of this species from Sussex. Two other species of this genus 
are mentioned by authors, varying in the number of their ambu- 
lacra ; these are, however, of very rare occurrence. One of these 
species has only four fascia or areola;, and is named Echinites quater- 
fasciatus. This is figured by Leske, Tab. xlvii. Fig. 3, 4, 5. It is 
also figured by Walch and Gehler. The other species, Echinites 
sexiesf asciatus , has six bands. This species has been figured by 
