78 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 51. 



Holotype and paratypes. — Cat. No. 51453, U.S.N.M. 



Remarks. — In the list of species given by N. S. Shaler as from the 

 Orange Bay section and from locality on the west side of Orange or 

 Whiting Bay, about half a mile south of Balls Mill/ the species 

 Spirifer perlaw£llosu8 Hall is cited. The writer had occasion to 

 examine the collections made by Shaler and, although the specimens 

 were not labeled, recognized specimens which closely resembled 

 Hall's species. These were reported in a revised list of the collection 

 under the name Spirifer cf. perlaTnellosus Hall.^ The specimens so 

 identified and others obtained in course of preparation of the East- 

 port Folio are here described \mder the specific name Spirifer ed- 

 mundsi Williams. 



SPIRIFER (cf. CYRTINA) LUBECENSIS Williamg. 



Plate 1, figs. 1(>-19, 20-28. 



Shell cyrtiniform, pedicle valve, plicated with high, nearly flat 

 and erect cardinal area. Fold and sinus wide at front. A pedicle 

 valve 2| cm. wide measures \\ cm. from beak to front. A brachial 

 valve of about the same width is about 12 mm. from beak to front. 



Teeth plates of pedicle valve thin, extend one-third way to front, 

 and a median septum cuts the sinus to three-quarters way to the 

 front in a mold of the interior. Beak sharp and angular; area, 

 high and triangular, flat and slightly overarching at the tip. Edge 

 of area nearly straight and rounded at junction with the sides. 

 Median sinus shallow, broadening toward front, and produced to- 

 w^ard opposite valve; plications, counting the outer edge of the 

 sinus as one, seven each side the center. Delthyrium narrow and ap- 

 parently uncovered. 



The brachial valve is gently curved from beak to front, fold 

 prominent and separated from the plications by a furrow stronger 

 than the furrows between the plications ; a shallow groove cuts the 

 middle of the fold. 



The surface is badly preserved in all specimens, though faint evi- 

 dence of lamellose concentric lines is seen on some. It is not pos- 

 sible from the specimens to determine whether or not there was 

 punctate structure. The general form and the septum suggest that 

 it may belong to the genus Cyrtina. 



The form varies considerably, which is probably the result of dis- 

 tortion through movement in the rock mass after fossilization. 



Formation and locality. — Black limestone at station 6.52.6B, be- 

 lieved to belong in the Edmunds formation, Lubec Township, Wash- 

 ington County, Maine. 



Cotypes.—Ciit. No. 61454, U.S.N.M. 



1 Amer. Journ. Sci., ser. 3, vol. .32, 18S6, p. 52. 



2 Prof. Paper No. 35, U. S. Geol. Surv., 1905, pp. 22-23. 



