646 



BULLETIN OF THE BUREAU OF FISHERIES. 



Balanus Continued . 



shells), 7681 (many on Polynices), 7701, 7739, 

 7744. 7756, 7757. 77<3O, 7761, 7766, 7767, 7770, 

 777 2 . 7773- (few small), 7774, 7775, 7776, 7777, 

 777 8 . 7779. 7780, 7783. 



Supplementary stations (approximate repeti- 

 tions in 1907 of the following stations): 7542 (a 

 number on shells), 7592 (few on Polynices shell, 

 dead and overgrown by Hydractinia), 7728 

 (several on shell), 7739(1 small dead, detached). 



Phalarope and Blue Wing stations: 6 (many 

 alive), 7 (few shells), 16 (i dead), 17 (several 

 on shells), 18 (on Polynices), 22 (few living), 

 28 (few dead), 35 (few dead), 36 (i), 42 (frag- 

 ments), 68 (on Polynices), 71 (on V ermicularia) , 

 72 (several), 73 (few), 76 (many on shells), 80 

 (few dead), 83 (few), 84 (many masses), 85, 88, 

 90, 93 (dead), 98, 103, 107, no, 112, 113, 114, 

 (common), 115, 117 (few), 118, 121, 123 (few), 

 126 (few dead), 129, 135, 139, 144. 



Balanus porcatus Costa. 



M. J. Rathbun, 1905, p. Si. 



Off Nobska. Rathbun. Crab Ledge, at Fish 

 Hawk station 7608, 2 specimensf, one or both 

 living, the largest measuring about 55 by 65 

 mm. Off West Chop, July 17, 1908*, one liv- 

 ing specimen, attached to a mussel shell. Spec- 

 imens with opercular plates incomplete or 

 lacking, and therefore impossible to identify 

 with certainty, were taken in the eastern part 

 of Vineyard Sound, at Fish Hawk stations 7523 

 bis (2 on stones), 7524 (station number some- 

 what doubtful, a single specimen), 7763 (1907 

 repetition); also near Phalarope station n 

 (Aug. 18, 1908). 



Balanus crenatus Bruguiere. 



Verrill and Smith, 1873, pp. 579, 381, etc.; M. J. 



Rathbun, 1905, p. 82. 



Piles of wharf at Vineyard Havenf*, clusters of 

 large specimens taken by our collectors in 1906 

 and 1909. The largest of these was 24 mm. in 

 diameter at the base. Three large dead speci- 

 mens, doubtfully identified* (opercular plates 

 almost wholly lacking), were found attached 

 to a shell, taken near the mouth of Buzzards 

 Bay, at a 1907 repetition of Fish Hawk station 

 7662. The largest was 18 mm. across at the 

 base. These may be B. porcatus, however. 

 On the other hand, those specimens which 

 were doubtfully assigned to B. porcatus may in 

 reality belong here. In view of the few du- 

 bious records from the Survey dredging, we 

 may well doubt the statement of Verrill and 

 Smith that this species is "dredged abun- 

 dantly in Vineyard Sound." 



Balanus hameri (Ascanius). 

 M. J. Rathbun, 1905, p. 83. 

 "Off Chatham; off Marthas Vineyard;" from 16 



fathoms down (perhaps not properly to be in- 



cluded within the region). 



Balanus balanoides (Linnaeus). 



Verrill and Smith, 1873, p. 579, 304, etc.; M. J. 

 Rathbun, 1905, p. 82. 



Generally distributed and enormously abundant 

 on rocky shores, between tides; also found in 

 great profusion upon piles and other sub- 

 merged timbers. Darwin expressed the doubt 

 whether this species ever lived below the low- 

 est tides. In any case, not a single specimen 

 has been found among all the barnacles 

 dredged by the survey. 



Nauplii liberated in great numbers at Woods Hole 

 in last week of December (1899). Bigelow. 



Chthamalus stellatus (Poli). 

 Sumner, 1909, p. 373. 



Abundant on rocks and piles everywhere along 

 the shores of the region, being confined, appar- 

 ently, to the intertidal zone. " It extends con- 

 siderably higher upon the boulders than does 

 Balanus balanoides, with which, however, it 

 is associated at a lower level. ... In local 

 waters, so far as I have seen, Chthamalus never 

 grows in such dense clusters as does Balanus 

 balanoides, and indeed it appears unable to 

 compete very successfully with the latter in its 

 proper zone." Despite its world-wide distri- 

 bution, and its abundance locally, this species 

 has not apparently been previously recorded 

 for New England. (See discussion, on p. 190.) 



Eggs were taken by Dr. M. A. Bigelow during 

 two different summers throughout the month 

 of July. 



Family 



Lepas fascicularis Ellis & Solander. 



Verrill and Smith, 1873, p. 579, 382, etc.; Bige- 

 low, 1902, p. 65; M. J. Rathbun, 1905, p. 85; 

 Pilsbry, 1907, p. 81 (" Lepas fasciculatiis" : ap- 

 parently a misprint). 



Vineyard Sound, and probably all local waters 

 connecting with the open sea, growing in clus- 

 ters upon drifting Fucus, Ascophyllum, and Sar- 

 gassumorupon floating wood, sometimes in great 

 abundance. Taken in June, July, and August. 



As regards reproduction, M. A. Bigelow states 

 that when first taken locally during the summer 

 season the eggs are mostly in advanced stages, 

 though early stages have been found in June. 



Lcpas pectinata Spengler. 



Verrill and Smith, 1873, p. 579, 382, etc.; Bige- 

 low, 1902, p. 65; M. J. Rathbun, 1905, p. 84; 

 Pilsbry, 1907, p. 81. (No local records, ex- 

 cept by Bigelow.) 



