9 FAMILIES AND GENERA. 



Dendronotidse. (OPISTHOBRANCHIATA.) Plate xxxii. 

 Dendronotus, 599. 



DentaliidSB. (SCAPHOPODA.) Plate xv. 



Cadulus, shell spindle-shaped, 185, 186. 



Dentalium, shell tusk-like, with or without slit, 187-189. 



Siphonodentalium, shell tusk-like, with 4 notches at base, 184. 



DonaeidSB, (EULAMELLIBRANCHIATA.) Plate viii. 

 Donax, 104-106. 



Dorididse. (OPISTHOBRANCHIATA.) Plate xxxiii. 

 Doris, 603. 



DotonidSB. (OPISTHOBRANCHIATA.) Plate xxxii. 



Doto, 598. 



DPCissensiidae. (EULAMELLIBRANCHIATA.) Plate vii 

 Drelssensia, 60. 



ElysiidSB. (OPISTHOBRANCHIATA.) Plate xxxi. 



Elysia, 588. 



Eryeinidse. (EULAMELLIBRANCHIATA.) Plate vii. 



Lepton, a cardinal and two strong lateral teeth in each valve, 



76-79. 



Lascea, a small cardinal in the left valve and two strong lateral 

 teeth in each valve, 75. 



Kellia, a thick, erect cardinal in the left valve, and in each valve 

 two strong laminar teeth which are partly cardinal and partly 

 lateral, 73, 74. 



EulimidSB. (PROSOBRANCHIATA.) Plate xxv. 



Eulima, shell subulate, tapering to a regular point, 461-466. 

 Stilifer, shell globose, spire divided into two parts, 467. 



Fasciolafiidse. (PROSOBRANCHIATA.) Plates xxvii., xxviii., xxix. 

 Fusus, 520-528. 



FiSSUrellidSB. (PROSOBRANCHIATA.) Plate xxi. 

 Fissiirelhi, slit at the crown, 326, 327. 

 Puncturella, slit in front of the crown, 328. 

 Emarginula, slit on anterior margin, 329-332. 



(EULAMELLIBRANCHIATA.) Plate vii. 

 Galeomma, So. 



