Our specimens are all from one locality from replicate 

 samples with different sampling gear in Great Harbor. Woods 

 Hole. Mass. (Fig. 17: Theroux and Wigley footnote 4, table 

 27). 



Provinces occupied by this species are the Boreal, Virgi- 

 nian, and Carolinian (Coomans 1962): Dance (1974) placed it 

 in the Transatlantic province. 



The fallen angel wing is a shallow water inhabitant ranging 

 from the intertidal zone to about 7.6 m in depth (Abbott 1968, 

 1974: Porter 1974). The depth range of our samples is from 1 to 

 3 m with a mean of 1.7 m. 



This species bores into mud, clay, and peat banks (Abbott 

 1968, 1974; Morris 1973: Emerson et al. 1976). Our samples 

 came from the muds of Great Harbor at Woods Hole, Mass. 



Barnea sp. Figure 18. 



Our collection contains two specimens from two samples of 

 members of the genus Barnea (Table 5). The samples are from 

 Buzzards Bay (Fig. 18: Theroux and Wigley footnote 4. table 

 28). Depth of the samples was 13 and 35 m with a mean of 24 

 m; sediment types at the sampling sites were gravel at one and 

 clay at the other. 



Genus Xylophaga Turton 1822 



Xylophaga atlantica H. G. Richards 1942. Atlantic wood eater. 

 Figure 117. 



This species ranges from Newfoundland and the Gulf of St. 

 Lawrence to Virginia in the northwestern Atlantic (Ockel- 

 mann 1958: Clarke 1962; Morris 1973; Abbott 1974). 



The NEFC Specimen Reference Collection contains 76 

 specimens of this species from 3 samples (Table 5). 



Our samples are from two areas, one north of Cape Ann, 

 Mass., and two replicate samples on the lower portion of the 

 continental shelf opposite Atlantic City, N.J. (Fig. 117; Ther- 

 oux and Wigley footnote 4, table 209). 



This species has been found to occupy water depths which 

 range between and 3,720 m (Clarke 1962). 



Our samples are from water depths which range between 60 

 and 458 m with a mean of 325 m. The depth range groupings 

 which contain samples of this species are the 200-499 m 

 grouping, which contains 67% of the samples and 96% of the 

 specimens and the 50-99 m grouping which contains 33% of 

 the samples and 4% of the specimens. 



Although our samples did not contain any sediment in- 

 formation per se, the specimens were obtained from water- 

 logged wood which was collected at the sampling sites indi- 

 cated in the distributional chart. 



Subclass ANOMALODESMATA 

 Order PHOLADOMYOIDA 

 Family PANDORIDAE 

 Genus Pandora Lamarck 1799 



Pandora bushiana Dall 1886. Bush's pandora. Figure 80. 



This species is distributed from North Carolina to Florida 

 on the U.S. east coast. It occurs at Texas, and the West 

 Indies; it is also present at the Bahama Islands, in Cuba, and 

 south to Yucatan and Brazil (Johnson 1934; Boss and Merrill 

 1965; Abbott 1974). 



Pandora bushiana is an uncommon warm water bivalve 

 represented in our collection by 15 specimens from 8 samples 

 (Table 5). 



Our samples range from offshore of the outer banks of Cape 

 Hatteras, N.C., to south of Charleston, S.C. (Fig. 80; Ther- 

 oux and Wigley footnote 4, table 136). 



The reported depth range for this species is between 6 and 

 46 m (Boss and Merrill 1965; Abbott 1974). 



Our samples are from water depths ranging between 20 and 

 40 m with a mean of 32 m. The majority of samples (88%) and 

 specimens (93%) are in the 25-49 m depth range grouping; the 

 remaining 13% of the samples and 7% of the specimens are in 

 the 0-24 m grouping. 



All eight of our samples were obtained in sand sediment. 



Pandora gouldiana Dall 1886. Gould's pandora. Figure 80. 



This species is distributed from the Gulf of St. Lawrence 

 and Prince Edward Island in Canada to North Carolina (John- 

 son 1934; Morris 1951, 1973; La Rocque 1953; Ockelmann 

 1958; Boss and Merrill 1965; Abbott 1968, 1974; Emerson et 

 al. 1976). 



Pandora gouldiana is represented in the NEFC collection 

 by 144 specimens from 33 samples (Table 5). 



Our samples range from the Nova Scotian continental 

 shelf, along the inner periphery of the Gulf of Maine , out onto 

 the southern part of Georges Bank, to the edge of the con- 

 tinental shelf off the entrance to Chesapeake Bay (Fig. 80; 

 Theroux and Wigley footnote 4, table 137). 



The distribution of this species is Boreal and Virginian on 

 the eastern coast of North America (Coomans 1962; Gosner 

 1971). 



The reported depth range for this species is from to 183 m 

 (Johnson 1934; Boss and Merrill 1965; Abbott 1974). 



The NEFC samples range in depth from to 119 m with a 

 mean of 52 m. Abundance with increasing depth range is: the 

 0-24 m depth range grouping contains 21% of the samples and 

 28% of the specimens, the 25-49 m grouping 27% of the 

 samples and 14% of the specimens, the 50-99 m grouping 39% 

 of the samples and 51% of the specimens, while the 100-199 m 

 grouping contains 12% of the samples and 8% of the speci- 

 mens (Table 278). 



All sediment types considered in this report, except sand- 

 shell, contained members of this taxon. Five sediment types 

 contained 4% of the samples, namely, gravel, sand-gravel, 

 till, shell , and silty sand ; in turn these contained 8 , 1 , 1,3, and 

 1% of the specimens, respectively; sand substrates, however, 

 contained the largest proportion of both samples and speci- 

 mens with 63% for the former and 82% for the latter; silt and 

 clay, the two finest grained substrates, contained 7.4 and 

 11%, respectively, for samples and 2 and 3%, respectively, 

 for specimens (Table 279). There are 6 samples containing 39 

 specimens which are unclassified with regard to sediment 

 type. 



Pandora inflata Boss and Merrill 1965. Inflated pandora. Fig- 

 ure 81. 



This species is distributed from New Jersey to both sides of 

 Florida, and according to Boss and Merrill is most populous in 

 the Straits of Florida (Boss and Merrill 1965; Abbott 1974). 



Pandora inflata is represented in the NEFC collection by 

 34 specimens from 17 samples (Table 5). 



51 



