SMITH : ON THE GENUS SCUTUS. 26 1 



3. Scutus unguis L. 



a. Typical form. Shell slightly narrowing anteriorly, only slightly 



corrugated. 

 Patella icnguis L. Mus. Ulricge, p. 69; Syst. Nat, ed. 12, 



p. 1260 (part). Schumacher, Syst. Vers. Test., p. 179 



(part), pi. 22, f. d, e. Hanley, Ipsa Linn. Conch., p. 5,24 



pi. 3, f. 4. 

 Scutus unguis, h. Ad. (part). Proc. Zool. Soc. 185 1, p. 221 



(part). 



b. var. Shell also narrowing in front and much wrinkled. 



Parmophorus granulatus^\7mis. Bull. Sci. Soc. Phil. 18 17, 



p. 28. Diet. Sci. Nat., xxxvii., p. 558. Lamarck, An. s. 



Vert., ed. 2, vii., p. 579. 

 Scutus granulatus A. Ad. Sowerby's Thes. Conch., iii., 



pi. 248, f 3, pi. 249, f. 20; Sow. Conch. Icon., xvii., 



f. 2 a — -b. 

 Par^nophonis imbricatus Quoy and Gaimard. Astrolabe, iii., 



p. 323, pi. 69, f 17—18. 

 Scutus imbricatus A. Ad. P.Z.S., 185 1, p. 222. 



c. var. Shell with subparallel sides, also considerably corrugated. 



Parmophorus corrugatus Reeve. Conch. Syst., pi. 139, f. i. 



Scutus corrugatus A. Ad. P.Z.S., 185 1, p. 222 ; Thesaurus, 

 pi. 248, f. 4, pi. 249 f 7. Sow. Con. Icon., xvii., f 3a-b. 

 Tapparone-Canefri, Malac. Viag. Majenta, p. 70. 



Parnwphorus japonicus Canefri (non Reeve) ; Canefri, I.e., 



pi. 2, f. 8 (dentition). 

 P. elegans Gray. Annals of Philos., 1825, ix., p. 139. 

 Emargiiiula brevicula Sow. (non Paiinophoms brcviculus 



Blainv.) Gen. Rec. foss. Shells, f 2. 

 Emarginula sp. Savigny. Descrip. Egypt, Atlas, Zoologie, 



Coquilles, pi. i, f. 10, 



