Marine Species 



31 



Modern distribution: Fairly common on Carib- 

 bean coast, from Turneffe Islands, B.H., to Isla 

 Contoy, Q.R. Also on offshore atolls. Absent on 

 north and west coasts. 



Archaeological occurrence: 



ISLA CANCUN MIDDEN: 100 unworked. 

 Formative. 



Arcopagia fausta (Pulteney) 



Illustration: Plate 20, d,dd. 



Modern distribution: East coast from Turneffe Is- 

 lands, B.H., to Isla Contoy, Q.R. Not collected 

 from north coast. West coast from Punta Palmar, 

 Yuc, to Isla Jaina, Camp. Also the offshore atolls. 



Archaeological occurrence: 



DZIBILCHALTUN: i fragment, in Formative 

 deposit. 



ISLA CANCUN MIDDEN: 3 unworked. For- 

 mative. 



Comment: One of the few shells from Dzbilichaltun 

 not found on nearby beaches. 



Apolymetis intastriata (Say) 



Illustration: Plate 20, ei?. 



Modern distribution: East and north coasts, from 



Turneffe Islands, B.H., to Punta Palmar, Yuc. 

 Alacran Reef. 

 Archaeological occurrence: 



TIKAL: I unmodified (M, p. 66, not dated). 



Family: MACTRIDAE (surf clams) 



Mulinia lateralis (Say) 



Illustration: Plate 20,//,//'. 



Modern distribution: On west coast, collected only 



as far north as Seybaplaya, Camp. Absent on north 



and east coasts. 

 Archaeological occurrence: 



TIKAL: "about 42," unworked (M, p. 67, no age 



listed). 



Family: GASTROCHAENIDAE 



Gastrochaena hians (Gmelin) (= Rocellaria hians) 



Illustration: Warmke and Abbott, 1961, pi. 44,^. 



Modern distribution: Collected at Telchac Puerto, 

 Yuc, in coral thrown on beach. 



Archaeological occurrence: 



MA YAP AN: Unworked, reported by Proskouria- 

 koff as "Rocellaria sp." (P, p. 387). This is the 

 only species of this genus known in these waters. 



