l60 NEW YORK STATE MUSEUM 



former, comparison can go no farther. Dalmanites veiti 

 has a type of cephalon quite unlike that of D. dentatus which 

 is dentate on the entire periphery. 



Locality. This species has been found only in a loose block from 

 the limestone ridge behind Peninsula, Gaspe Basin, in association 

 with D. phacoptyx, Phacops logani gaspensis, 

 Platyceras conulus, Anoplia nucleata and other 

 species of the Grande Greve fauna. 



Lower Devonic. Grande Greve, P. Q. 



Dalmanites whiteavesi nov. 



This species is represented by a series of small pygidia some- 

 what of the type of that part in D. anchiops Green but more 

 particularly like that of D. m e e k i , figures of which may be found 

 in Walcott's Palaeontology of the Eureka District, 1884, pi. 17, fig. 

 5, and Palaeontology of New York, 1888, v. 7, pi. 11 A, fig. 29, 30; 



Dalmanites whiteavesi 



that is, rather short and subtriangular but with rounded margins and 

 an extended, slender caudal spine. The axis is moderately broad 

 and convex bearing seven or eight segments which are well rounded 

 and the pleural ribs are of the same number, flat on top with narrow 

 intervals and each is grooved by a fine line. 



The margins of the shield curve slightly outward uniting behind 

 to form a spine which has about one fourth the length of the shield. 

 It is narrow, ends acutely and is slightly upturned. As a whole 

 the shield is shorter, relatively broader and has more segments than 

 does D. m e e k i. The latter is from the lower part of the Devonic 

 series in Nevada. 



Lower Devonic. Grande Greve, P. O. 



Dalmanites gaveyi nov. 



We are here presented with a species in which the frontal margin 

 of the head bears a slight, simple, lobed and blunt extension with- 

 out accessory processes or crenulations similar in effect to that of 

 D. g r i f f o n i. This is a structure after the type of D. v i g i 1 a n s 



