552 PILSBRY AND VAN ATT A 



POLYPLACOPHORA. 



Family Chitonidae. 



Chiton goodalli Brod., Iguana Cove, Albemarle. 

 Chiton sulcatus Wood, Iguana and Tagus Coves, Albemarle ; Nar- 

 boro. 



Family Acanthochitidae. 



Acanthochites hirudiniformis Sowb., Tagus Cove, Albemarle. 



GASTROPODA. 

 Family Acmaeidae. 

 Acmaea mitella Mke., Iguana and Tagus Coves, Albemarle. 



Family Fissurellidae. 



Fissurella obscura Sowb., Iguana and Tagus Coves, Albemarle; 

 Culpepper. 



The nominal species F. 77iacrotrenia Sow^b. and F. longifissa Sowb. 

 are unquestionably synonyms of F. obscura^ though they have hitherto 

 been given specific rank in the books. F. asperella Sowb. is closely 

 allied, but may be distinct by its sculpture of raised dots. 



The color-form longijissa was taken at Tagus Cove and Point 

 Christopher. 



Fissuridea inaequalis Sowb., Iguana and Tagus Coves and Point 

 Christopher, Albemarle. 



Family Trochidae. 



Chlorostoma cooksoni Smith, Iguana Cove, Albemarle. 

 Chlorostoma snodgrassi Pils. and Van., Iguana and Tagus Coves 

 and Point Christopher, Albemarle ; Narboro. 



Calliostoma leanum C. B. Ad., Tagus Cove, Albemarle. 



Family Eulimidae. 

 Stylifer astericola Brod., var., Tagus Cove, Albemarle. 



Family Naticidae. 

 Polinices uber Val., Tagus Cove, Albemarle; Narboro. 



Family Calyptraeidae. 

 Amalthea grayana Mke., Tagus Cove, Albemarle. 

 Crepidula aculeata Gmel., Tagus Cove, Albemarle. 

 Crepidula adunca Sowb., Wenman. 

 Crepidula onyx Sowb., Tagus Cove, Albemarle. 



