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, inihi. 



Sutton. I I I 



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

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



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

 carinae three, rugose; base striated; umbilicus crenulated; shell na- 

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

 inch nearly. PI. V. f. 7 and 10. 



The elevated carinae give an angulated appearance to the otherwise 

 nearly cylindrical form of the volutions, which are slightly impressed 

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

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

 lacrum or furrovrat 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 Trochiis and Marcjarita. 



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

 one specimen. 



Sect. /3. imperforate. 

 1. Trochus ziziphinus, Auct. 



I Sutton. I I Britain. 



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

 Mhi. Con. t. 272. f. 1). 

 Ramsholt. | | | 



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



I WaltonNaze. | | MediteiTanean. 



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



Sutton. I I I Mediterranean. 



5. — quadricinctus, n. s. } 



Sutton. I I I 



6. — Montacuti. 



Sutton. I I ... I Britain. 



Identified by Mr. Edward Forbes. 



7. — subexcavatus, n. s. 



I Sutton. j I 



8. — asperulus, n. s. 



Sutton. I I I 



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

 tication, consequently difficult of identification. 

 Sect. a. umbilicated. 



9. — cinereo'ides, n. s. 



I Walton Naze I I 



