36 
MONOGRAPH OF THE GENUS STROPHIA, 
are colored within, none being white, even if they are wholly white exter- 
nally. 
The name alvearia, having become a synonym is not again available 
in zoological nomenclature and, as shown, Bulimus fusus of Brugui- 
ere afterwards the Pupa fusus of more recent authors, probably is not 
a Strophia, but one of the peculiar members of the great family of 
Pupiclae which occur in the Isle of .France, to which locality it appears 
to be correctly assigned by Pfeiffer in his Mon ographia Helicorum 
Viventium, Yol. II, page 318, hence it remains for me to impose a new 
name upon the Inagua species. 
DESCRIPTION AND HABITS. 
I found the Cylindrical Strophia common in December, 1888, on 
the Island of Inagua, Bahamas. They were clinging to the trunk g 
of small trees, just back of Mat thews town, and appeared to have a 
somewhat wide range, extending throughout the scrub lands from the 
town to the borders of the salina in the interior. December being: a 
dry month, they 'were inactive, and firmly fastened to the trunks. 
They appeared to avail themselves of any natural cavity and had often 
wedged themselves into these so firmly as to be removed with difficulty. 
They were always gathered in groups of from three or four to twenty 
individuals. 
SUB-GENUS 2. STEOPIIXOPS. 
Lower Tooth, low. rising gradually from the walls of the 
MOUTH, SOMEWHAT ELONGATED, AT LEAST THREE TIMES AS LONG AS HIGH. 
Umbilicus open, with the same diameter, for seven or eight up- 
per WHIRLS. 
This sub-genus was established by Dr. Dali in 1895, in the Bull- 
etin of the Museum of Comparative Zoology, No. 9, Yol. XXY, pages 
121-123, but in this group he also included all of the species found on 
the Cayman Islands -which I have placed in the sub-genus Longidens 
( see page 39 ). This group appears to he confined to some of the outer 
Bahama Islands which lie along the Atlantic side of the Bahama Bank. 
Thus Strophia alba S. lentiginosa and S. brownei from Rum Key be- 
long here, also all of the species which I have described from Highborn 
Key but not from the keys about Allen’s Harbor. For further remarks 
regarding the relationship between this sub genus and the Strophia s 
which occur on the Cayman Islands, see Sub-Genus 11. 
