MALACOZOA. CEPHALOPODA. 25 



2. Vermicuhim intdrtum. — Shell suboval, of several, 

 glossy, white turns ; the mouth divided by a thin tooth. 

 Intdrtus, bent inwards. 



3. Vermiculum obldngum. — Shell subelliptical, of seve- 

 ral, glossy, white turns ; the mouth divided by a thick- 

 ish bifid tooth. ObUngus, of greater length than breadth. 



4. Vermiculum lacteum. — Shell oblongo-elliptical, of 

 several glossy white elongated lobes, arranged obliquely 

 along a common axis ; the mouth circular. Ldcteus, 

 milky. 



Genus 7. Textularia. — Shell subpyramidal, of two 

 vertical, alternating series of cellules ; aperture of each 

 cell semilunar, on the inner side. Textus, plaited. De- 

 france. 



1 . Textularia obUnga. — Shell oblong, somewhat com- 

 pressed, pointed, with the cells horizontal, minutely bul- 

 lato-tuberculate, olivaceous. Obldngus, longer than 

 broad. 



Genus 8. Lagenula. — Shell flask-shaped. Lagenula, 

 a small flask. Fleming. 



1. Lagenula Icevis. — Shell flask-shaped, having an 

 ovate body, smooth, bluish-white, with a sub cylindrical 

 prolongation ; aperture a little raised, circular. Lcevis, 

 smooth. 



2. Lagenula reticulata. — Shell ovato-globose, con- 

 siderably compressed, glossy, white, pellucid, with 

 opaque white reticular internal markings. Reticulatus, 

 marked with lines resembling network. 



Genus 9. Ccecalium. — Shell subcylindrical, more or 

 less arcuate, closed at one end, open at the other. 

 Caecum, a tube closed at one end. Fleming. 



1 . Ccecalium gldbrum. — Shell cylindrical, subarcuate, 

 very thin, transparent, glossy, white, closed at one end, 

 with a circular aperture at the other. Glaber, smooth. 



2. Coecdlium imperfordtum. — Shell cylindrical, arcu- 

 ate, glossy, circularly substriated. Imperforatus, closed 

 at the end. 



c 



