272 A - S. PACKARD, Jr., ON THE RECENT 



lection PS ° nS L ' Cmdida ' Very COmm ° n ^ thG Bay ° f Fundy ' did not occur in W co1 " 



Membranipora pilosa Johnst. 

 Especially abundant encircling fronds of Desmarestia just below low-water mark. 



Membranipora lineata Bcsk. 

 Frequent in from ten to fifty fathoms, Straits of Belle Isle. 



Membranipora (ReptofluBtreUa) amerieana D'0 KB . (fide Sm IT t.) 

 M. Lacroixii Busk ! Packard, Can. Nat. p. 408. 



I cannot distinguish these two species from Greenland specimens. 



Membranipora solida Pack. 1. c. p. 408. PI. I., fig. 2. 



Cells large, flat, solid, oval, angulated, often presenting a six-sided figure as is common 



one haffTt, ^ T^' ^ ™" *"* ™* wUh ° Ut **« A^ure occupying 



Z S T " PPer SU f Ce ' transversel ^ broad, oval, with a broad deep sinus ; the paste 

 nor half of the upper valve is thin, convex, subrugose, with a small, triangularly perforate 

 corneal avKmlanum, situated at the posterior end of the upper surface. Cells aian.ed in 

 lines, or m qumcunces, or more often irregularly. The cells are not so crowded T in the 

 other species. To the naked eye it looks like bleached patches of old worn LepraKaT 



Beania admiranda Pack. 1. c. p. 408. 

 Cells very large, erect, oval, smooth, base produced, sessile. Growing in tufts the cells 



Znf eh 1 TT US SeH r he r^^ ariSiDg ° n eaCh Side ° f tL ^e'ture ofte 

 parent cell. Aperture raised, circular, surmounted by two long, stout, truncate spines 



which are succeeded on the opposite side by two rows of long obtuse spines nearly Z2 

 mg across the hollow formed by the two ridges on the back of the cell Compared wTth 

 B.nurahks of the British coast, this is a much stouter species, growino- in low Z-acW 

 but not creeping, tufts There are from six to eight pals of Large obtuse J 1^1' 

 meet across the cell; being fewer in number, and longer and stoSter than in B nM 

 More important differences exist in the diameter of the° cell which is greatest the oS 

 or anterior nrd of the cell, where in the British species it is thicke/posteriorly ; and m 

 our species the aperture opens near the end of the cell. It occurred rarely on Pecten in 

 fifty fathoms, Straits of Belle Isle. * retien in 



„ .. , Crisia eburnea (Linn.) 



Crista luxata Fleming. 



Our specimens agree perfectly with Smitt's excellent drawings of the coencecium and 

 ovz-cells. Hopedale, ten fathoms, rocky bottom ; Henley Harbor, four fathoms 



Cellularia Peachii Johnst « 



Found with the preceding. A rare species. 



