Annotated Checklist of Freshwater Species' 



Class: GASTROPODA 

 Family: AMPULLARIIDAE 



Pomacea flagellata arala (Crosse and Fischer) 



Illustration: Plate 21, /;. 



Archaeological occurrence: 



DZIBILCHALTUN: 2 unworked, one in Late 

 Early period fill, one in Formative fill. This species 

 is very common in all levels of mud in Cenote 

 Xlacah, where it is not found alive today. 

 BARTON RAMIE: 45, unworked, about 39 of 

 these from Formative deposits, the other 6 Span- 

 ish Lookout phase, Protoclassic (W, pp. 526—27, 

 fig. 309,;-, "Pomacea flagellata Say"). 

 TIKAL: I cut fragment, Late Classic debris; 5 

 perforated, one in Early Classic cache, one in Early 

 Classic burial, one in Late Classic burial, two in 

 Late Classic debris. 189 unworked were listed to 

 1964, archaeological context not yet available 

 (M-MS). 



PIEDRAS NEGRAS: i unworked in Late Clas- 

 sic cache (C, p. 55). 



Comment: The Dzibilchaltun specimens have been 

 identified as subspecies arata by Alan Solem. Speci- 

 mens from the four other sites were all published 

 as P. flagellata Say. 



Pomacea flagellata ghiesbrechti (Reeve) 



Illustration: Coe, 1959, fig. 52,^. 



Archaeological occurrence: 



PIEDRAS NEGRAS: Various unworked in Late 

 Classic caches; i with 2 large drilled holes in Late 

 Classic cache (C, pp. 55—56, fig. 52,^). 



Family: THIARIDAE 



Pachychilus glaphyrus (Morelet) 



Illustration: Willey and others, 1965, fig. ^oc),u,v. 



Archaeological occurrence: 



BARTON RAMIE: 248 unworked, from vari- 

 ous periods, heavily concentrated in the Formative 

 phases (W, pp. 526-27, fig. ^0'^,u,v). 



1 Modern distributions are not given here as they are not 

 accurately enough known to reflect trade practices. Most fresh- 

 water molluscs were probably collected locally. 



TIKAL: 3 unworked, archaeological context not 

 available (M, p. 68). 



Pachychilus indiorum (Morelet) 



Illustration: none. 



Archaeological occurrence: 



PIEDRAS NEGRAS: Listed as present; archaeo- 

 logical association not described (C, p. 55). 



Pachychilus largilUerti (Philippi) 



Illustration: Willey and others, 1965, fig. 309,^,/. 



Archaeological occurrence: 



BARTON RAMIE: 557 unworked, from various 

 periods, but heavily concentrated in the Formative 

 phases (W, pp. 526-27, fig. 309,^-,^). 



Comment: Moholy-Nagy (M— MS) notes identifi- 

 cation of one "Hemisinus sp." at Tikal, archaeologi- 

 cal context not yet available. She also collected one 

 at Tayasal on Lake Flores, and informs me that the 

 local name is jute, the popular name for Pomacea. 



Class: PELECYPODA 

 Family: UNIONIDAE 



Nephronaias goascoranensis (Lea) 



Illustration: Richards and Boekelman, 1937, pi. (>,q. 



Archaeological occurrence: 



SAN JOSE: i unworked, in burial, probably S.J. 



II (T, p. 180; see also Richards and Boekelman, 



1937, p. 169, pi. 69). 



Nephronaias ortmanni (Frierson) 



Illustration: Willey and others, 1965, fig. 309, n. 



Archaeological occurrence: 



BARTON RAMIE: 3 unworked, 4 perforated for 

 suspension, in 2 Spanish Lookout phase burials; 

 758 others, all unworked, from various periods 

 but mostly in Preclassic contexts (W, pp. 504, 

 507, 526-27, fig. 309, /-«). 



Nephronaias cf. yzabalensis (Crosse and Fischer) 

 Illustration: Fischer and Crosse, 1894, pi. 44; figs. 



4; 4 A' 4,^- 

 Archaeological occurrence: 



SAN JOSE: 10, with bored holes for suspension, 



in tombs of S.J. Ill, IV, V, and possibly S.J. I; 



others, bored and unbored, found elsewhere in 



excavations (T, p. 180). 



32 



