542 Br. S. Woodicard — Discovery of Trilohites 



fig. 1), to wliicli it approacbes, but in Eicbter's figure tbe glabella is 

 narrow in front and broader bebind, wbereas our Culm form is just 

 tbe reverse. Prof. A. von Koenen, p. 312, op. cit., places Kicliter's 

 P. posthumus witb Phillipsia cequalis, H, von Meyer, and observes, 

 " As von Meyer expressly says tbat tbe glabella is reduced in front, 

 there is no doubt that Burmeister was in error in figuring as this 

 species a form witb a club-shaped glabella. Emmrich's restored 

 figui-e does not give a good representation of the species ; tbe bead- 

 shield is too long, tbe eyes placed too far in front, and the glabella 

 too slightly reduced in front. The form placed by Roemer under 

 Phillipsia latispinosa, from the Silesian Culm of Bantsch, appears to 

 me, on account of tbe very wide glabella, to belong to P. cequalis. 

 Near Nehden I have found an example of which the tail is 15 mm. 

 wide and 10 mm. long, and fragments of still larger dimensions 

 occur at Aprath" {op. cit. p. 313). 



We have bad the opportunity to study two Trilobites, much com- 

 pressed, referred to Fhillipsia cequalis, H. von Meyer, which were 

 obtained at Aprath by Mr. J. E. Lee, E.G.S., of Torquay. Tbe 

 cheek-spines, if they existed in the original, are wanting in both, 

 although the compound faceted eyes can be discerned with a high 

 power, and there are faint traces on one sj^ecimen of the obliquely 

 transverse furrows on the glabella. A reference to Cylindraspis 

 latispinosa, of Sandberger (taf. iii. fig. 4 and 4a), shows that the 

 glabella of this species is also more pointed in front than in our 

 British species ; the facial suture is close to tbe glabella, as in other 

 FJiiUipsice. 



Another specimen also from Mr. Lee's Collection (marked as 

 "from the Culm near Marburg, collected by the Eev. G. F. Wbid- 

 borne, M.A., F.G.S.," and obtained most probably from Herborn), I 

 bave not been able satis factorilj'^ to refer to any of the species 

 described by German authors. The bead-shield (like that of the 

 preceding specimen from Apratb), has no cheek-spines, but the 

 pygidium diifers in possessing an axis distinctly marked by 12 or 

 13 coalesced somites, reminding one of tbe pygidium of Ph. Cliff ordi 

 (PI. XVI. Fig. 10), but, judging by the glabella, it probably agrees 

 more nearly with the Apratb specimens, and should be referred witb 

 a note of interrogation to Ph. (equalis ? (Woodcuts of these are 

 given by me in Pal. Soc. Mon. Carb. Trilob. pt. ii. 1884,. p. 68.) 



I should mention that von Meyer's figure of (Phillipsia) ? 

 Calymene cequalis (" Nova Acta," vol. xv. 2nd sen 1831, p. 100, taf. 

 56, fig. 13) has no cheek-spines and no eyes, nor are any sutures 

 shown in the bead-shield. 



The only recent reliable figures of German Culm Trilobites are 

 those given by Herr B. Kayser, in his memoir, Aus dem Culm 

 von Apratb,^ where he figures (taf. iii. fig. 7, 8) a small but perfect 



^ Beitrage zur Kenntniss von Obedevon und Culm am Nordrande des rheinischen 

 Schiefergebirges, von Herrn E. Kayser, Arten aus dem Culm von Apratb, pp. 67-91. 

 taf. iii. in Jahrbuch der k. Preussiscben geologiscben Landesanstalt und Berg- 

 akademie zu Berlin fiir 1881 (Berlin, publisbed 1882). We bope to give Mr. Kayser's 

 paper a fuller notice later on. — H.W. 



