67 
CUCULL/fiA elongata. 
TAB. CCCCXLYIL —fig. 1. 
Spec. Char. Elongated, subcylindrical, finely 
striated ; anteriorly pointed ; posterior side 
very short. 
Nearly three times as wide as long; the valves are so 
deep as when closed to form an irregular cylinder ; the 
beaks are small, incurved, and distant from the anterior 
extremity ; the striae longitudinal and very fine. 
Collected at Cross Hands by the Rev. Mr. Steinhauer ; 
the shells appear to have been found in the soft parts of 
the Limestone, as they are empty. 
CUCULLiEA costellata. 
TAB. CCCCXLYIL —Jig. 2. 
Spec. Char. Transversely oblong, gibbose, 
longitudinally striated ; anterior lobe wing- 
shaped, ribbed ; posterior side rounded, 
ribbed ; beaks incurved, distant from each 
other. 
The general outline of this shell is an oblique parallel- 
ogram, twice as long as wide, placed transversely ; the 
striae are sometimes distant, at others very numerous, 
and slightly decussated by the lines of growth ; each 
extremity is distinguished by 3 or 4 small, sharp, rugged 
ribs, the anterior ones have strong elevated striae between 
them ; the anterior side or lobe is distinguished by the 
keel-iike termination of the central portion of the surface. 
Siliceous casts of this neat shell are not unfrequent at 
Blackdown ; it is also found at Collumpton, in Devon- 
shire. 
