Mr. S. V. Wood's Catalogue of Shells from the Crag. 531 



My only specimen is unfortunately imperfect. It is strongly rib- 

 bed and spirally striated, and what there is of it remaining appears 

 to agree with Dr. Fleming's full description. 



Cor. Crag. Red Crag. Mam. Crag. Recent. 



1 . Solariella (n. g.) maculata, mihi. 



Sutton. | | | 



Gen. Char. Subtrochiform, depressed; spire acute; peritreme sub- 

 circular , umbilicus large, deep and crenulated ; shell nacreous. 



Spec. Char. Subtrochiform ; volutions five, subcircular, carinated ; 

 carinas three, rugose; base striated; umbilicus crenulated; shell na« 

 creous. Diameter three-eighths of an inch. Axis one-fourth of an 

 in^h nearly. PI. V. f. 7 and 10. 



The elevated carinas give an angulated appearance to the otherwise 

 nearly cylindrical form of the volutions, which are slightly impressed 

 by the preceding whorl ; carinas of different sizes and at unequal di- 

 stances, the upper one most prominent, producing a depressed ambu- 

 lacrum or furrow at the suture; upper part of the peritreme projecting a 

 little beyond the lower: fragments and small specimens are abundant. 



I have ventured to propose a new genus for this shell, conceiving 

 the subcylindrical form of the volutions to have no generic connexion 

 with the quadrangular opening of the Solarium. It is probably in- 

 termediate between Trochus and Margarita. 



The specific name is added from the remains of coloured spots in 

 one specimen. 



Sect. /?. imperforate. 



1. Trochus ziziphinus, Auct. 



| Sutton. | | Britain. 



2. — pseudo-ziziphinus (Schlott. Pet. p. 160. Trochus Sedgwickii, 



Min. Con. t. 272. f. 1). 



Ramsholt. | | | 



3. — granosus, Lamarck (Hist, des An. sans Vert. vii. p. 20). 



| WaltonNaze. | | Mediterranean. 



4. — conulus ? Lamarck (Hist, des An. sans Vert. vii. p. 24). 



Sutton. | | | Mediterranean. 



5. — quadricinctus, n. s. ? 



Sutton. | | | 



6. — Montacuti. 



Sutton. | . . . | | Britain. 



Identified by Mr. Edward Forbes. 



7. — subexcavatus, n. s. 



| Sutton. | | 



8. — asperulus, n. s. 



Sutton. | | | 



The shells of this genus from the crag are much altered by decor- 

 tication, consequently difficult of identification. 



Sect. a. umbilicated. 

 0. — cinereoides, n. s. 



| Walton Naze | | 



