170 
The American Geologist. 
September, 1904 
Pleistocene Fauna of Sankaty Head, Nantucket, Mass. 
List of Species. 
I. 
Lower Bed 
2. 
Serpula 
Bed 
3- 
Upper Bed 
4. Frag- 
ment Range 
Bed 
Porifera. 
Cliona sulphurea Desor 
Abundant 
S 
N 
S 
S 
s 
N 
N 
N 
S 
S 
S 
s 
N 
S 
N 
S 
N 
N 
N 
N 
N 
N 
N 
s 
Eclmiodef-mata. 
Strongylocentrotus drobachiensis 
Mull : 
Spines only 
Annelida. 
Serpula dianthus Verrill 
Abundant 
Common 
Common 
Common 
Abun- 
dant 
Common 
Bryzoa. 
Hippothfoa variabilis Leidy 
Membranipora tenuis Desor 
" catetiularia Smitt 
Eschara verrucosa Esper 
On shells 
Celleporaria incrassata Smitt (?) 

Several 
Mollusc a {Pelecypoda). 
Area pexata Say 
X 
... 
" ponderosa Say 
" transversa Say 
One speci'n 
Abundant 
Abundant 
X 
X 
Few 
Ostrea virginica Gmel 
Anomia aculeata Gmel 
Few 
Common 
" simplex d'Orb 
X 
Few 
Common 
Mvtilus edulis Linn 
Common 
Modiolus hamatus Verrill 
X 
iMany 
Sever'l, large 
Few* 
One valve 
Abundant 
X 
Crenella glandula Totten 
Few 
Thracia truncata Mighels and Adams 
Pandora (Clidiophora) gouldiana Dall 
Astarte castanea Say 
X 
X 
" cjuadrans Gould '. 
X 
" undata Gould ; 
One valve 
Gouldia mactracea Linsley 
Venericardia (Cyclocardia) borealis 
Conrad 
One speci'n 
Common 
Few 
Few 
N 
Venericardia (Cyclocardia) novang- 
liae Morse 
X 
N 
Venus mercenaria Linn 
Abundant 
Abundant 
Few 
Rare 
Several 
X 
s 
Var. Antiqua \'errill 
Gemma gemma Totten 
N. S. 
Petricola pholadiformis Linn 
s 
Tellina (Angulus) tenera Say 
Macoma balthica Linn 
S N 
A few valves 
N 
Cumingia tellinoides Conrad 
Common 
Abundant 
X 
X 
s 
Ensis directus Conrad 
Few 
Common 
Abundant 
X* 
Few 
Several 
S. N. 
Spisula solidissima Dillw 
X 
N. S. 
Mesodesma arctata Conrad 
N 
" deaurata Turton 
N.(N.) 
N. S. 
Mya arenaria Linn 
Abundant 
" truncata " 
N 
Corbula contracta Say 
Saxicava artica Linn 
One valve 
Few 
s 
Common 
One valve 
N 
" norvegica 
N.(N.) 
S 
Panopaea sp.? 
Fragments* 

* Exact bed not given, referred provisionally to this bed by Prof. Verrill or by the writer. 
