75 



middle, where there is situated a small tubercle, neck furrow extending 

 all across. There are four glabellar furrows, of which the posterior 

 extends across but is very indistinctly impressed in the middle ; the next 

 two in advance extend inwards about one-third of the widch of the glabella, 

 while the small one in front is somewhat shorter. The furrows are all 

 nearly at a right angle to the longitudinal axis, and about equidistant from 

 each other. The anterior margin of the head is bordered by a narrow^ 

 convex rim, which is separated from the front of the glabella by a flat 

 space, varying in width from once to thrice its (the rim's) width. The 

 fixed cheeks are sub-triangular and nearly flat. The anterior extremity of 

 the eye lobe is situated at a point nearly opposite, but a little behind, the 

 anterior furrows, and is close to, but not in contact with the side of the 

 glabella. The lobe is slightly sigmoid, its posterior extremity opposite the 

 last glabella furrow. The dorsal furrow is distinctly impressed along the 

 posterior half of the glabella but obscurely marked in front. 



The surface is minutely granular. In all of the three specimens 

 collected there is a small straight rounded ridge, which runs from the 

 front of the glabella to the margin. It is situated exactly on the median 

 line. 



Of this species we have three specimens of the glabella, two of which 

 retain portion of the fixed cheeks and show the form of the eye. The 

 largest is three lines in length, including neck segment and front margin* 



Occurs at Chapel Arm, Trinity Bay. 



Paradoxides decorus. N. sp.) 



Description. — The form of the glabella of this species is nearly the 

 same as that of P. tenellus, but the glabellar furrows are somewhat 

 different. The posterior pair seem to be entirely disconnected in the 

 middle and the next two pairs are rather more curved. The marginal 

 rim of the front of the head seems to be close up to, and in contact with, 

 the front of the glabella. The surface is ornamented with minutely 

 corrugated, raised lines which, in some places, anastomose so as to present 

 an irregularly reticulated appearance. This at once separates the species 

 from P. tenellus, the surface of which is minutely granulated. The 

 surface of ^. venustus is somewhat like that of this species, but the raised 

 lines are more distant, and besides the posterior glabellar furrow extends 

 all across. The length of the most perfect glabella examined is about 

 thirteen lines. Only three fragments (all of the glabella) of this species 

 occur in the collection. Form of the eyes and of all other parts unknown. 



It occurs at Chapel Arm, Trinity Bay. 



