74 SYSTEMATIC ARRANGEMENT 



in front ; the anterior canal straight, the hinder indistinct. Rostrum 

 moderate, annulate. Tentacles linear, elongate. Eyes sessile, basal. 

 Mantle reflected over the shell, rugulose externally. Foot elongate, 

 truncated and expanded in front, produced behind. Siphon elongate, 

 produced in front. 



This genus differs from Marginella in having a rostrum or pro- 

 boscis, as shown by the figure cited. 



a. Shell smooth. 



1. E. Cypreola?t. 102. f. 7. 



2. E. lsevis (Marginella 1.), Forbes $• Hartley, B. M. t. N.N. f. 8, 9, 



cop. Adams, Gen. Moll. t. 20. f. 1. 



b. Shell tubercular. 



3. E. scabriuscula. 



Mr. Clark describes Erato Cypreola as having a retractile pro- 

 boscis ! but the description is avowedly only compiled from Philippi, 

 aided by memory ! — See Mollusca, 506. 



Fam. IV. PEDICULARIAD^E. 



Rostrum wrinkled. Mantle enclosed, thickened on the edge, not 

 produced into a siphon in front. Eyes sessile, lateral, basal. Foot 

 small. Teeth 3 • 1 * 3 ; lateral very long, deeply lobed. Operculum 

 none. Shell irregular, ovate, subconvolute, covered with a radiately 

 ridged callous coat ; spire lateral, minute. Mouth very wide ; outer 

 lip sinuous ; inner lip callous, rounded, and covering part of the last 

 whorl. Shell of young animal regular. — Ann. fy May. N. H. 1846, 

 xviii. 428. 



Parasitic on coral, forming a hole in its surface. 



1. Pedicularia. 



1 . P. Sicula. 



2. P. fimbriata, A. Adams. 



Central tooth of Pedicularia Sicula depressed, subquadrate, cutting 

 Fig. 42.— Teeth of Pedicularia Sicula. 



^ra^/v? 



edge transverse, with one sharp point and denticulated ; lateral teeth 



