12(] 



i\Ir. F. A. Batlier on a 



Proloscolex latus, sp. n. 



Dlajnosia. — Segments bear eacli one or two rows of papilla, 

 of w liicli not more tlian twenty are visible on one side ot tlie 

 compressed fossil. Spaces between papillae not less than the 

 diameter of a papilla, lleiji^lit of a segment about 0*25 mm. 

 Width of 8))eciinen about 3 mm. Ratio of segment-height 

 to width 8/100. 



Ilolotype. — A specimen collected by Dr. H. L. Hawkins, 

 and presented by him to the British Museum : Geol. Dept. 

 A. 1946. 



Horizon. — Lower Ludlow, just above the Starfish bed. 



Locality. — Martin's Shelly below Mocktree, near Leint- 

 wardine, Herefordshire. 



This specimen (fig. 1) presents many features of interest 

 other than those due to its remoteness in time and space from 

 the species previously described. It is preserved in counter- 

 part as two inijuints, but some of the substance of the integu- 

 ment remains here and there as round calcified knob.^, appa- 

 rently where the wall was thickened by papilhe. The 

 chemical composition of these kiiobs is unknown, and may be 

 due to petrifaction of a chitinoid substance. 



Proto scolex 

 latus 



The specimen lies in a curve shai)ed like the head of a 2. 

 Its outline is not very clear-cut as seen under a lens. 'J'he 

 diameter is about 3 mm. in the upper part of the ascending 

 stem of the 2 ; towards the end of the curve it lessens 

 gradually to 2*3 nun., then suddenly tapers or rounds off like 

 tlie end of an earthworni. Towards the lower end of the 

 stem of the 2 the width gradually lessens to 2 nun., and then 

 the fossil seems to fade away into the matrix, both outline 



