of some species ofBullcea, Lam. SS9 



2. BULL^A PUNCTATA, 



Bulla Punctata. Adams , Linn, Trans. 5th vol. Tab* l»Jig* 6, 

 7,8. 



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

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



Testa ovato-oblonga, tenuissima, albS^, pellucida, uitida, lineis 

 transversis punctatis, latere columnar*! arcuato, apice obtuse vix 

 umbilicato. Long. -^ unc. Lat. minus quam -^ 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 ^^th 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 PRUINOSA. 



Animal supra et infra albidum, pede permagno. Corpus postice 

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



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

 pheria paululum constricta, margine columnari arcuato, reflexo, 

 ad medlam partem suberaarginato, apice subrotundato, leviter 

 umbilicato. Long. -^ unc. Lat. plusquam ^^ unc. 



Y 2 



