Marine Species 



Family: NATICIDAE (moon shells) 



PoUnices duplicatus (Say) 



Illustration: Plate 3,7,7'. 



Modern distribution: Southwest coast only, from 

 Chencan to Isla Carmen. 



Archaeological occurrence: 



TIKAL: 2 pierced for suspension, one Formative 

 (Chuen), one probably Late Classic (M-MS). 



PoUnices hepaticus (Roding) 



Illustration: Plate 3,/,/'. 



Modern distribution: East coast only, from Turnefle 

 Islands, B.H., to Isla Mujeres, Q.R. 



Archaeological occurrence: 



ISLA CANCUN MIDDEN: i unworked. For- 

 mative. 



PoUnices lacteus (Guilding) 



Illustration: Plate 3,^,^^. 



Modern distribution: Common on Caribbean coast 

 only, from Turnefle Islands, B.H., to Isla Contoy, 

 Q.R. Also the offshore atolls. 



Archaeological occurrence: 



ISLA CANCUN MIDDEN: 9 unworked, For- 

 mative. 



Natica canrena (Linne) 



Illustration: Plate 6,77. 



Modern distribution: Common on entire periphery 

 of the peninsula from Belize, B.H., to Isla Aguada, 

 Camp. Also at Alacran Reef. 



Archaeological occurrence: 



MAYAPAN: Probably Decadent period, 3 

 "pierced" specimens (P, p. 387, fig. 44,1?). 

 CHICHEN ITZA: "6, one of these cut at base, 

 two with large round holes, two perforated" (P, 

 p. 422, archaeological context not noted). 



Family: CASSIDIDAE 



Morum oniscus (Linne) 



Illustration: V\2L.tt6,dd,dd'. 



Modern distribution: Uncommon on east coast, 

 from Turnefle Islands, B.H., to Cancun, Q.R., 

 and on west coast (Chencan, Camp.). Also found 

 on the offshore atolls. 



Archaeological occurrence; 



BALANKANCHE: i tinkler, spire and shoulder 

 cut off, drilled perforation at base, age uncertain 

 (Andrews, 1969, p. 54, fig. 55, d). 



Morum tuberculosum (Reeve) 



Illustration: Keen, 1958, iig. 316. 



Modern distribution: Pacific. 



Archaeological occurrence: 



PIEDRAS NEGRAS: i tinkler, spire and shoul- 

 der removed and base perforated, probably Classic 

 (C, pp. 55, 57, fig. 52,«). 



SAN JOSE: i, in S.J. V tomb (T, pp. 180-1, "as 

 Lambidium tuberculosa morum" which is this 

 species). 



Comment: It is strange to find the Pacific species at 

 San Jose and Piedras Negras when the almost iden- 

 tical Atlantic form was to be obtained so near to 

 both sites. Separation of highly altered specimens 

 into the two species is precarious. Identification 

 of the Balankanche tinkler was influenced by geo- 

 graphic provenience; it might also have been the 

 Pacific species. 



PhaUum granulatum (Born) 



Illustration: 'P\a.te.6,b,bb. 



Modern distribution: Isla Cancun and Isla Mujeres, 

 on east coast only. 



Archaeological occurrence: 



ISLA CANCUN MIDDEN: 6 unworked, For- 

 mative. 



PhaUum inflatum (Shaw) 



Illustration: Plate 6, a, aa. 



Modern distribution: North and west coasts only, 

 from Isla Holbox, Q.R., to Isla Carmen. Also 

 Cayo Areas. 



Archaeological occurrence: 



DZIBILCHALTUN: i fragment, unworked in 

 Formative debris. 



MAYAPAN: Proskouriakof? (P, p. 387, fig. 

 47, f) lists "PhaUum sp.," which is probably in- 

 flatum, as this is the only north-coast species, 

 and is very closely resembled by her illustration. 

 COP AN: Longyear (1952, fig. S>A,d) illustrates 

 what is probably a shell of this genus. It is not 

 mentioned in the text. 



Comment: Large samples of both these species on 

 the east and north coasts show neither geographical 

 overlap nor morphological intergrading. They differ 

 in that P. granulatum is about half the size of infla- 

 tum, is relatively much heavier and thicker-shelled, 

 strongly cancellate rather than spiral sculpture, and 



