160 BIOLOGICAL SURVEY OF 



Order APODA 



Synaptidae 

 Leptosynapta Verrill 

 L. iNHAERENs (0. F. Muller). (Clark, 1904, p. 571, pi. 11, 

 fig. 74; pi. 14, figs. 109-112; Mortensen, 1927, p. 427, fig. 261.) 

 Found hidden under stones where there is also sandy mud, 

 from low water to 35 feet. Common at S 11, 43. Stations : 

 D33, 35; 811,39,43. 



LITEEATUEE 



Clark, H. L. 1904 The echinoderms of the Woods Hole region. Bull. United 



States Fish Comm., vol. 22, pp. 547-574, 14 pi. 

 Mortensen, Th. 1927 Handbook of the Echinoderms of the British Isles. 



Oxford: pp. i-ix, 1-471, 269 fig. 



MOLLUSOA 



Scire tuum nihil est nisi te scire hoc sciat alter? — Persius. 



As I sit down to write up this list, I think of the late 

 C. W. Johnson's statement, when writing his list of the Mol- 

 lusca of New England, that the preparation of any list, when 

 nomenclature is so unsettled, is fraught with sad misgivings, 

 as one sees many of the names familiar from boyhood swept 

 into the synonomic sea. I was most fortunate in having 

 Mr. Johnson for a friend. In our many talks while we com- 

 pared doubtful individuals with the collection in the Boston 

 Society of Natural History, he taught me much, and I have 

 followed the classification he used in the Occasional Papers 

 of the Boston Society of Natural History — VII Fauna of New 

 England 13, List of Mollusca, 1915. 



In but few species the Report on the Invertebrata of Massa- 

 chusetts, second edition, comprising the Mollusca, by A. A. 

 Gould, edited by W. G. Binney, 1870, is the reference for 

 plates and figures. 



Of the five faunas admitted for the several subdivisions of 

 the eastern American coast by naturalists such as Dana. 

 Packard, and Verrill, but two need be considered in this paper 

 — the Syrtensian and Acadian. 



