MALACOZOA. CEPHALOPODA. 25 



2. Fermiculum intdrtum. Shell suboval, of several, 

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

 Int6rtus, bent inwards. 



3. Fermiculum obttngum. Shell subelliptical, of seve- 

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

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



4. Fermiculum Idcteum. Shell oblongo-elliptical, of 

 several glossy white elongated lobes, arranged obliquely 

 along a common axis ; the mouth circular. Lacteus, 

 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 . Textuldria obldnga. 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 lavis. Shell flask-shaped, having an 

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

 prolongation ; aperture a little raised, circular. Lcevis, 

 smooth. 



2. Lagenula reticuldta. 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 sub cylindrical, more or 

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

 Caecum, a tube closed at one end. Fleming. 



1 . Ccecdlium gldbrum. Shell cylindrical, subarcuate, 

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

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



2. Ccecdlium imperfordtum. Shell cylindrical, arcu- 

 ate, glossy, circularly substriated. Imperfordtus, closed 

 at the end. 



