78 NEW YORK STATE MUSEUM 



The hinge is well displayed in some specimens and is peculiar for its 

 simplicity ; there is a moderately broad, striated ligament area which widens 

 slightly beneath the beaks but there is, under the most favorable preserva- 

 tion, no evidence whatever of the umbonal teeth which exist in the typical 

 forms of Goniophora. Therefore the suggestion of relationship to that 

 genus is wholly based on the general aspect of the exterior. The shell is 

 generally about twice as long as high and many attain a length of 50 mm. 

 Surface sculpture simple concentric lines. Beushausen referred to Cardio- 

 morpha such toothless shells, including within his diagnosis a large variety 

 of external expressions, among others, forms having this Goniophoralike 

 exterior [see especially C. alata Sandb. in op. cit. p.223, pi. 25, fig. 15-17]. 



Locality. Moosehead lake, north of Soccatean point, Me. 



Solenopsis sp. 



Plate 17, figures i, 2 



There are specimens present in these rocks which palpably pertain to 

 this genus but are too incomplete for description though we have given a 

 figure to illustrate their general character. 



Locality. Moosehead lake, Baker Brook point. 



Ditichia cf. elliptica Maurer 



Plate 16, figures 7, 8 



See Cucullella elliptica Maurer. Fauna d. rechtsrhein. Unterdevon. 1886. p. 15 

 Ditichia mira v. Sandberger. Neues Jahrb. f. Mineral. 1891. Bnd. 2, p. 104 

 Cucullella elliptica Beushausen. Lamell. d. rhein. Devon. 1895. p. 104, pi. 5, 



fi g- 9~ T 5 



This shell, represented only by a few internal casts, presents rather 

 the most extreme development attained in Palaeoneilo or Cucullella of the 

 double muscular ridge on the basis of which the species C. elliptica 

 Maurer was separated from Cucullella by Sandberger under the generic 

 name above used. Beushausen has declined to employ the term on account 

 of the various gradations shown by different species in the development of 

 this structure but so close is the resemblance between the specimen here 

 figured and those given by Beushausen of the species cited ' that identity 

 is well nigh evident. 



Cucullella elliptica is a lower Coblentzian species. 



Locality. Matagamon lake, east side, i mile above dam. 



1 Op. cit. pi. 5, see especially fig. 12, 12 A. 



