HAUSTORIIDAE OF NEW ENGLAND BOUSFIELD 199 



Acanthohaustoriiis millsi, new species 



Figures 16, 3/, 4b, 22, 23 



Material examined. — Woods Hole, Mass., Stony Beach, sand, 

 subtidal, June 29, 1961, E. L. Mills: 1 9, ov., holotype (NMCM 7050) ; 

 same locality: 5 99, paratypes (NMC 7051). Cape Cod, Mass., near 

 Nobska Point, sandy beach below low water, Aug. 16, 1959, E. L. 

 Mills: 125 specimens, including cTcf and 99 ov. (NMC 7052). 

 Woods Hole, Mass., east end of Nobska Beach, fine sand at low water, 

 Aug. 26, 1961, E. L. Mills: 64 specimens mcluding cfcf, 99, ov., 

 1 imm. (NMC 7053) ; east side Nobska Point, fine sand, low water, 

 July 28, 1962, E. L. Mills: about 200 specimens (NMC 7054). Cape 

 Cod, Mass., Marshfield, coarse sand, low water, Aug. 20, 1961, 



D. Frankenberg: 4 99, 3 ov., 2 cfcf, 9 imm. (NMC 7055); Nobska 

 Beach, sand at low water. May 12, 1962, E. L. Mills, E. L. Bousfield: 

 10 99, 8 ov., 9 d'd', 2 imm. (NMC 7056); Barnstable Harbor, sandy 

 channel opposite town wharf, low water. May 13, 1962, E. L. Bousfield, 



E. L. Mills, E. Deichmann: 12 99, 9 ov., 12 d^cT, 6 umn. (NMC 7057). 

 Falmouth, Mass., Sippewisset Marsh, sand, 1-3 ft., Feb. 13, 1960, 

 R. L. Wigley: 11 99 (br. U), 1 d' (NMC 7058). Brewster, Mass., 

 sand, 2-4 ft.. May 22, 1960, R. L. Wigley, 1 imm. (NMC 7059). 

 Albatross-101, sta. 86, 41°14', 67°28', Smith grab, 24 fms., Aug. 24, 

 1957: 1 imm. (NMC 7060). Albatross-lOl , sta. 89, 41°29', 67°28', 

 Smith grab, 27 fms., Aug. 24, 1957: 4 cfcf (NMC 7061). Albatross- 

 101, sta. 186, 40°48', 68°19', Smith grab, 31 fms., Aug. 28, 1957: 

 4 d'c^, 1 9 (br. U) (NMC 7062). Isles of Shoals, N.H., N.W. 146, D2, 

 July 19, 1937: 1 imm. (USNM 668/541). 



Cape Cod region. Cedar Island (Nonamesset Island), Nobska 

 Beach, Megansett breakwater. Little Sippewisset Beach, Nobscusset 

 Beach, Wild Harbor, Herring Brook, Narragansett Beach, mouth of 

 Pattaquamsett Inlet, sandy bottoms, low water, September 1963: 

 1000+ specimens (MBL, author collections). Chatham, Mass., 

 Feb. 22, 1960: 19 adults; Old Silver Beach, Jan. 31, 1930: 47 sub- 

 adults; same locality, Feb. 13, 1960: 2 99, 9 imm. Woods Hole, Ram 

 Island, July 16, 1955: 2 adults; Vineyard Sound, L. Tashmoo, Nov. 

 13, 1962: 3 adults; same locality. Middle Ground, from Bluehack 

 62-1, April 5, 1912: 15 adults; Alhatros'^-m, coll. 1, 41°52', 69°60', 

 Van Veen, Nov. 15, 1955: 7 adults; Alhatross-\{)\ , sta. 68, 41°06', 

 68°00', Smith grab, Aug. 24, 1957: 1 adult. 



Northern New England, 1963: about 1150 specimens obtained at 

 16 localities, from East Sandwich and the Cape Cod Canal north to 

 Casco Bay and Pemaquid Beach, Maine, includmg Rockport and 

 Plum Island, Mass., Cape Neddick Beach, and Ogunquit, Maine 

 (NMC, author collections). 



