of some species of Bullcea, Lam. 339 



2. BuLL.Ii;*. PUNCTATA. 



Bulla Punctata. Adams, Linn. Trans. 5ih vol. Tab. l-fg' ^j 

 7,8. 



Char. Spec. Animal supra cinereo-nigrum, pcde flavo-albido. 

 Corpus postice digitatum. Long. -^^ uuc. Lat. -^- unc. 



Testa ovato-obionga, tenuissiina, alba, pellucida, nitida, lineis 

 transversis punctatis, latere columnar! arcuato, apice obtuse vix 

 umbilicato. Long. JL unc. Lat. minus quam -j?^ unc. 



Animal cinereous approaching to black ; body posteriorly digi- 

 tated, yellowish white. Length -^^th inch. Breadth ^*^th inch. 



Shell oblong, very thin, white, pellucid, glossy, marked with 

 transverse dotted lines ; inner margin arcuated ; apex obtuse with 

 a very shallow umbilicus. Length y*o*^'* inch. Breadth less than 

 ^th inch. 



Montagu never saw this shell, and in consequence he placed it, 

 though with doubt, as a synonym of his Bulla Catena ; but both 

 the animal and shell are eminently distinct. The colour of this 

 species is almost black, and it is much smaller than the preceding ; 

 but the most decided mark of distinction is, that it has not a giz- 

 zard furnished with testaceous appendages like B. Catena, but has 

 merely a skinny cylindrical tube. Its general shape almost in all 

 respects resembles the last species; the apex however is more 

 obtuse. This shell instead of the chain-like striae, has transverse 

 lines formed of distinct dots as represented in Adams's figures, 

 which are otherwise very ill executed. This animal is found in 

 company with B. Catena, but is much more rare. 



3. BULL^A PUUINOSA. 



Animal supra et infri albidum, pede permagno. Corpus postice 

 digitatum. Long. -J^ unc. Lat. -^^ unc. 



Testa subglobosa, nivea, subopaca, subtiliter reticulata, peri- 

 pheria paululum constricta, margine columnari arcuato, rellexo, 

 ad median! partem subemarginato, apice subrotuudato, levitcr 

 umbilicato. Long. ^ unc. Lat. plusqnam ^ unc. 

 Y 2 



