G5 



Genus 8. CYLLENE, Gray. 



Animal ; unknown. 



Shell; small, ovate, swollen, truncate, and a little recurved at 

 the base, spire rather short, acute, with the sutures minutely 

 channelled, columella concave, smooth or finely grooved ; lip 

 sliyhtly notched near the base, emaryinated at the summit; 

 interior finely radiately grooved. 



The genus Cyllene was introduced by Mr. Gray in his ' Synopsis ' of our 

 national collection, for the sake of distinguishing a few smaU sliells exhi- 

 biting an association of character of remarkable peculiarity, and of which 

 the Buccimim lyratum of Lamarck, figured by M. Ejener in his illustration 

 of that genus, (PL 22. Fig. 38.) may be regarded as the type. It may be 

 observed on reference to our figure, that the shell is of a small Yoluta-like 

 structure, without plaits, however, on the columella, which is a little 

 excavated, and shghtly grooved, the spire being short though sharply 

 acuminated ; the Hp is very characteristic ; at its junction with the body 

 whorl, it is emarginated in a manner similar to that of Oliva, and near the 

 base, it is distinguished by a small notch, like that which constitutes one of 

 the principal generic features in Phos; the interior is deeply radiately 

 grooved, as in many of the Purpura. I am not aware that the two or 

 tlu-ee species referable to this type, have been yet described ; it therefore 

 only remains to record the one included under Buccimim by Lamarck,'and 

 that selected for illustration which I dedicate to the founder of the genus. 



Species. 



1. Gr^fi, Reeve. 2. lyratum, (Buc.) Lamarck. 



Figures. 



Cyllene Grayi. Plate 3. Fig 12. — Showing the front portion of the 

 shell. From Mr. Cuming's collection. 



Genus 9. BULLIA, Gray. 



Animal .• disc very large, thin, flatly expanded, head flattened, 

 with the tentacles long, subulate, and rather distant; no eyes. 



Shell ; ovate, turreted, spire more or less subulately acuminated, 

 sutures frequently callous ; columella callous towards the upper 

 part, excavated ; ajjerture emarginated above and below. 



