q6 



The animal like all thofe belonging to this family of fhells^ 

 as far as we have been able to inveftigate, is a true ^f-iclia, 

 with connected I'yphons ; thefe are of a pale vcUow colour, 

 longitudinallv ftriated, and annulated uith brown, the open- 

 ings fimbriated: the fuflentaculum is large and clavated. 

 With this implement it quickly makes a new paffage under 

 the moift fand if left a fhort time on the furface ; it is pro- 

 truded at that end neareft the hinge, which part is always 

 downward in fuch fhells as are borers, or that bury ihcm- 

 felves under ground. 



Fragilis. By fome unaccountable milunderflanding we find our 

 p- 5 1. friend the Rev. Mr. Rackett has refered to us under the 

 p. 565. article Sulen antiquatiis, in his Defcriptive Catalogue of Britijl} 

 Tejlacea,g\\en in the Limiean Tranfadiona , vol. viii. page 4,6, 

 for authority in uniting Solenfragilh and anliquatus as one and 

 the fame fpeces. We beg leave to obferve this has wholly 

 originated from fome miftake, as we are mofl, clearly and 

 decidedly of opinion that thefe two fliells are perfedtly dif- 

 tindt. The fragilis is confiderably broader in proportion to 

 its length, more compreflTed, and fub-arcuated in the front 

 margin than the aniiqnatus, and may always be diftinguiflied 

 by its pellucid appearance, the other being opaque even when 

 the epidermia is removed ; befides whicli they diiler in the 

 [lru6lure of the teeth. 



The figure given in Hutchins's Dorset, Tab. 4. fig 5. is 

 the fra^rtl is, which may be compared with anliquatus, figured 

 in the Britijlj Zoology, Tab. 46. fig. 25. 



TELIINA. 



