INVERTEBRATE FAUNA OF LABRADOR. 275 



Eschara lobata Lamx i 



Tamouroux describes Eschara lobata as growing in radiating patches always adhering to 

 the X of ob ects, and as having been collected near the Banks of Newfoundland 



The cells are oblong, oval, convex; each end is connected with the cell m front and be- 

 hind wfth a few larger emarginate punctures. Apertnre round, with a shallow broad 

 to Just b hTnd the aperture a small perforated conical eminence, which an old sped- 

 Tens bears a la'ge avicularium, with long, sharp-pointed beaks gapmg widely ; or when 

 Xent the con "large, covering the upper surface of the cell, and furrowed with descend- 

 ing ridges In communities with ovi-capsules, the surface of the cell itself cannot be seen ; 

 Sepsis are globular, sublimate in form, with emarginated punctures; the aperture 

 W often truncate behind. Cells arranged in linear series with intervening ridges^ 

 ^Si^fiSSS™ dead Cardium and Serripes in ten to twenty fathoms, Salmon 

 Bay on IS «£- on the Banks ; Hopedale, ten fathoms, rocky. I have taken ^in 

 the Bay of Fundy and at Eastport from low-water mark to twenty fathoms. Mr Smitt 

 considers this as being the Lepralia stage, L. trispinosa, of an unknown species of Eschara. 



IUs very different from a'thin, flatfmembranaceous, inverted, cup-shaped species that 

 inhabits Massachusetts Bay. 



E. elegantula D'Orb. 



The coenoecium of this fine species grows several inches high in e-ct bramching masses 

 the branches expanding flat and spreading at the ends. Cells broad, oval, flattened, some 

 what prodded a" the base ; surface smooth, sub-granulated. Aperture round, with a broad 

 tlT'Z. Young cell's often margined with a row of large puncture. In old ^ 

 munities the ovi-cells are narrow-oblong, very convex, semi-cylmdrical, the cylinder like 

 a^cu r a proiec ing over the aperture, and perforated with a large operculated aperture. 

 Towa^ ^e en of the branches the cells are somewhat cylindrical, bearing narrow globu- 

 Hr ovi-capsules which are emarginate-punctured. This is near Busk's K saccaa, which 

 came eiZftom N orway or Finmark. It differs, however, from his figure ; and his rather 

 unsatisfactory description does not aid me in determining the species 



Common on the Bank in the Straits of Belle Isle, in company with Cellepora. I have 

 specimens al so from the Newfoundland Banks. Dr. Stimpson has also specimens col- 

 lected in Northern Greenland by Dr. Hayes in his last expedition. 



Eschara papposa a. sp. [Plate VII., fig. 17.] 



Coenoecium thick and solid, spreading out in broad, lobulate expansions. Cells numer- 

 ou^athe small; their surface mostly concealed by the large cylindrical tubes which are 

 r^uairerXgiving a papillose appearance to the surface of the coenoecium ; the tube 

 rrrforated by a large operculated aperture, which is bilobate orbicular, divided by a 

 ZSfiSZ tooth in the lunder edge. The aperture of the cell seen^m above is pa, 

 riallv concealed by the tube, giving it a lunate form. The ovi-cell is of medium size, gioou 

 K --th Li hyaline.* Xh! youngest cells at the °»«f^™ £ 

 , is ; of the very free erect tube, without any ovi-sacs, and with the small *F>™™ F° 

 totted bv a ttun lid The av.oularia are remarkably large and thorn-like being acutely 

 c„ltlX4-eV laterally; the smaller lid is often narrow and hooked hke .a hawks 



MEMOIRS BOST. SOC. HAT. HIST. Vol I. Pt. 2 



