124 



NEW YORK STATE MUSEUM 



is much less sharply defined on the surface of the test than on the cast. 

 There are 12-14 of these lateral ribs and 13-16 segments on the axis. 

 The caudal spine is about 15 mm long and quite slender, usually absent 

 in ordinary preservation. These shields, agreeing in all essential details 

 of structure with the originals, are accompanied by parts of cephala 

 which enable us to complete in a measure our knowledge of the species. 

 These are of a size to correspond with the pygidia ; the glabella is 

 normally lobed with a tendency to coalescence of the first and second 

 lateral lobes (Synphoria) ; the border appears to have been broad, smooth 

 and uninterrupted ; the surface is very coarsely tubercled and the frontal 

 lobe of the glabella bears a single pair of elevated blunt spinules 

 symmetrically placed with reference to the median axis. A spinule of like 

 character lies at the middle of the nuchal ring. The suture lines are sunk 

 in deep grooves ; the eye greatly elevated, of magnificent proportions, bear- 

 ing not less than 500 lenses ; its base deeply and narrowly furrowed. The 

 genal spine is broad, flat, finely pustulose and spined on its inner edge. 



This is the largest of the Dalmanites in this fauna and almost attains the 

 dimensions ofD. perceensis to which species it is allied in many features. 



Localities. From various spots in the upper strata about Grande 

 Greve and thence toward Little Gaspe, also at Lehuquet's Cove and on the 

 lower layers at Shiphead. Loose at Peninsula, washed down from the 

 westward extension of these limestones. 



Dalmanites veiti nov. 



Associated with specimens of D. phacoptyx from the limestone 

 hills behind Peninsula, Gaspe Bay, are abundant pygidia and cephala of uni- 

 form size, unlike the species 

 with which they are associ- 

 ated as well as with any 

 others of our acquaintance. 

 These pygidia are relatively 

 small, subequally triangular, 

 flattened above and rather 

 abruptly sloping at the mar- 

 gins ; apparently without tail 

 spine. There are 11-12 lat- 

 eral ribs, 6 or 7 of which 

 are grooved medially. The 

 axis bears 13-14 segments. 

 The upper limb of each of 

 the divided lateral ribs carries 2, 3 or 4 pustules so developed as to over- 

 hang the sulcus, while each segment of the axis bears a single row of 5, 6 



Dalmanites veiti. The underside of the cephalic doublure X2 and 

 three pygidia natural size 



