Gen. Erismatolithus. Fam. Milleporit.®. 21 
5. Erism. Madreporse aggrcgatse, stirpulis fasciculatis caullformibus subra- 
mosis striatis flexuosis coalescentibus, stellis turbinato-concavis reti- 
culatis. 
Tab. 17. Fig. I. 
Varieiates. 
a. V. ramis cylindricis. 
b. V. ramis subclavatis. Tab. 17. 
Cespitose Madreporite. 
Sedcs: strata vetusta, marmorea. 
Castleton, See. 
6. Erism. Madreporetes aggregatus, stirpulis cauliformibus subramosis 
Iffivibus subflexuosis, stellis concavis reticulatls. 
Tab. 31. Fig. 1. 
Affined Madreporite, 
Sedes : strata vetusta, marmorea. 
Winster and Ilucklow, Rare. 
* c * Milleporltae. 
7. Erism. Milleporitcs ? plano-foliaceus reticulatus, poris mlnutis subobso- 
letis sparsis. 
Tab. 43. Fig. 1, 2. Tab. 45. *. Fig. 3. 
Flustriform Milleporite. 
Sedes ; strata vetusta, marmorea. 
Middleton, Buxton, &c. 
Obs. The original of this fossil appears to have been allied to the Millepora reticulata, tinn. 
The pores, as in that species, are confined to one side ; but they are much smaller and less dis- 
tinct. Whether the general form and manner of growth, in the two species, were in any respect 
similar, it is impossible to judge, as our petrifaction only occurs in small, detached portions, 
incorporated, as it were, with the substance of the limestone, which constitutes the matrix. 
Madrepo- 
ra cespito- 
S<F. 
affinis. 
flustri- 
formis. 
