OF CONCHOLOGY. 69 



Zool. iii, p. 19, pi. , fig. 6, 6a, May, 1871. West of Tortugas, 

 in 30 — 13 fathoms, Pour-tale's. 



Differs from Schrammi in color and sculpture, but may prove 

 to be a variety of it, as the descriptions and figures of Crosse 

 and Fischer exhibit some discrepancies. To the septum is at- 

 tached a cordate nodulous transverse plate, not hitherto noticed 

 in any species of Cistella. 



Cistella (? Barrettiana, Dav. var.) lutea, Dall, 1. c. p. 20, pi. 

 1, fig. 5, 5a, and pi. 2, fig. 4-8. Tortugas, 30 — 43 fathoms, 

 Pourtales. 



This also differs in color and sculpture, as well as in the extent 

 of the loop, from C. Barrettiana and C. antillarum, but may 

 eventually prove conspecific. I have preferred in these two cases 

 to give a provisional varietal name to the forms described, rather 

 than unite what may prove to be different without positive proof. 

 C. Schrammi appears to be distinct from C. Woodwardiana, but 

 C. antillarum may very possibly have to be united with C. Bar- 

 rettiana. 



The frilled openings of the oviducts in the variety lutea are 

 almost rudimentary, and there is no long tubular extension, but 

 the opening for the genital products is directly in the midst of 

 the rudimentary folds. The brachia behind the mouth are very 

 much longer than the others. The ovaries hang upon the edge 

 of a rather broad ribbon-like lamina, the heart is present but 

 lower down than in most brachiopods, and quite small ; no ac- 

 cessory vesicles were to bo found. The intestine is coecal. There 

 are no setse in this or the last species. 



Cistella cistellula, p. 146, is reported from the Mediterranean. 



Family RHYNCHONELLIDiE. 



Animal with two prolongations of the brachial disk spirally 

 coiled inwards, with the apices of the coils directed toward the 

 body of the haemal valve. Punctate or impunctate. 



Four oviducts and four accessory " pulsatile vesicles" present. 



It appears to me that Atrypa and its allies would, from the 

 position of the spires of the brachia, be placed more naturally in 

 this family than in the Spiriferidw. Prof. Theodore Gill has pro- 

 posed a new family, — Atrypidw — for these forms, but it is ques- 

 tionable whether the mere calcification of the spires is a family 

 character. 



The genus Rhynchopora has been proposed by Prof. King for 

 the Rhynchonella Creinitziana, which possesses a punctate struc- 

 ture. 



I am indebted to the kindness of Mr. Davidson for information 



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