ART. 21 OEDOVICIAN TRILOBITES ULEICH 19 



Reynalds, and Reed/'^ the Tourmakeady Beds are of Llandeilo age, 

 which, however, is not very definite as regards the American sequence. 

 Judging from the general aspect of the fauna listed from these beds, 

 I am inclined to place them about the Middle or Upper Chazyan. 



TELEPHUS REEDI, new species 



Plate 1, Figure 1 



TelepJius fr actus Baerande, Reed, 1903, Lower Paleozoic trilobites of the 

 Girvan District, Paleontogr. Soc, p. 44, pi. 4, fig. 11. 



This new name is proposed for the Girvan species of which in- 

 complete cranidia were mentioned and one figured by Reed in 1903 

 and all referred by him to the Bohemian species T. fractus Bar- 

 rande. Although the figured specimen is very imperfect and I have 

 nothing better to base an opinion on than the figure given of it by the 

 mentioned author, it yet seems impossible that it can be strictly the 

 same species as T. fractus. Nor does it seem likely that it belongs 

 to any of the Scandanavian species or to any of the American species 

 herein described. Assuming that the figure is reasonably true to 

 nature it must represent a species' with an anteriorly extraordinarily 

 truncated, subquadrate glabella that distinguishes it at once not only 

 from T. fractus but also from all other species of the genus now 

 known. Perhaps the nearest of the American species is my T. spinif- 

 erus, but comparison of the illustrations of the two forms on follow- 

 ing plates can hardly fail to convince the observer that they are not 

 even closely allied. 



Compared with European species I note considerable resemblance 

 to the similarly incomplete cranidium referred to T. hicuspis by 

 Hadding and illustrated by Figures la and 16 in Plate 1 of his work 

 on the genus. As figured the anterior end of the glabella of this 

 specimen, which is provisionally distinguished on page 13 as T. jainb- 

 landicus., is blunter^ — more truncate — and its lateral sides straighter 

 than in the three other cranidia used by Hadding in illustrating the 

 characters of this Swedish species. Nor does either the dorsal or the 

 anterior view of it give any suggestion of the low ridge that is plainly 

 indicated on the other figures as running longitudinally across the 

 middle of the glabella. In all these respects this specimen makes a 

 closer approximation to conditions found in the glabella of the 

 holotype of T. reedi. Though it is believed that Hadding confused 

 and included two distinguishable forms in the Swedish material 

 referred by him to T. hicuspis, it seems certain that neither of them is 

 strictly conspecific with the type of this Girvan species. The free 

 cheeks in the latter are relatively too small and the curvature of 

 their outer margins too sharp to justify identification in either case. 



"Quart. Journ. Geol. Soc. London, vol. 65, pp. 104-154, 1900. 



