278 bulletin: museum <»i comparative zoo'logt, 



Cranidiuzn a little mure than twice at wide at long, Bmooth, gently and 

 evenly convex. Glabella very large, depressed convex, with large la 

 lobes strongl) suggestive of Amphilicnas. The outline of 1 1 1 « - whole glabella 

 is roughly circular, the width being a little greater than the length of the 

 glabella and neck-ring. The confluent glabellar furrows follow exactly tin- 

 same course as do those of an Amphilicnas, separating large, oval, diagonally 



placed lateral lobes. The central lobe IS narrow «-t B short distance m front 

 of the neck-furrow, and widest at the front. In front of the glabella the check 



slopes down to a very narrow flattened or concave border which is absenl from 



the sides, where narrow, free cheeks extending hack to the genal angles and 

 probably elongated into genal spines were probably present. No evidence of 

 the presence of eyes remains, and it is probable that like the Kaphiophoridac 

 these were blind trilobites with dorsal facial sutures. The neck-furrow is 

 distinct all across the back of the cephalon, but narrow. The neck-segment 

 is wider near the distal ends than near the axial lobe. 



The thorax has seven narrow segments, the axial lobe being gently convex 

 and the pleura] lobes flat. The axial lobe is rather wide, nearly one third 

 the total width and tapers very little from front to back. On the pleural 

 lobe each segment shows a rather wide, deep, central furrow. 



The pygidium is short, Ampyx-like, with four rings on the wide axial lobe 

 and three pairs of ribs on the pleural lobes, and is surrounded by a steeply 

 sloping striated border. 



Measurements: — Entire specimen; length, 10 mm., width at genal angles, 

 9 mm.; length cephalon, 4 mm., thorax 4 mm., pygidium 2 mm., width 

 glabella 3.75 mm., widtli axial lobe at front of thorax 2.5 mm., at front of 

 pygidium 2 mm., width pygidium at front 6.5 mm. Largest cranidium, length 

 9 mm., width 15 mm., width glabella 8 mm., length glabella 7.5 mm. 



This species is very like E. meeki, and I should not have been able 

 to separate the two had not specimens of both been before me. In 

 E. schuchert i the glabella is more nearly circular in outline, broader, 

 and flatter than in E. meeki, and the median tubercle is fainter and 

 farther forward, so faint in fact as to be invisible on most specimens. 

 In E. meeki there is a strongly striated abruptly sloping border in 

 front of the glabella while in E. schuchert i the corresponding portion 

 is a smooth "roll" sloping down to a narrow concave border. 



Horizon and Locality: — Professors Schuchert and Twenhofel 

 collected twelve specimens, three of them entire, from the limestones 

 of Division N, (Normanskill) at Table Head, Newfoundland. Billings 

 referred to this form as occurring abundantly in Division X at Table 

 Head and the west side of Pistolet Bay, also in Division P, four miles 

 northeast from Portland Creek, Newfoundland. The types are in 

 the Yale University Museum. Named for Prof. Charles Schuchert. 



