68 CARBONIFEROUS TRILOBITES 



The only other German Culm Trilobite we have had the opportunity to study 

 is a compressed body and pygidium with the basal part only of the head-shield 

 preserved in a piece of shale from near Marburg obtained by the Rev. G. F. 

 Whidborne, M.A., F.G.S., who presented it to Mr. J. E. Lee, F.G.S., of Torquay, 

 in whose cabinet I found it. (See woodcut fig. 3, p. 67.) 



It agrees most nearly with our Ph. Cliffords as regards the pygidium, which, 

 however, consists of fewer segments, and the base of the head-shield shows that 

 the Marburg specimen had not (apparently) any cheek-spines to the cephalon. 



Formation. — Lower Culm. 



Locality. — Waddon-Barton, near Chudleigh, Devon. From the Collection of 

 Mr. J. E. Lee, F.S.A., F.G.S. 



29. Phillipsia minor, H. Woodiv., sp. nov. PL X, figs. 5, 6 a, &, 7, and 8 a. 



This is the smallest Carboniferous Trilobite which I have studied, being only 

 half the size of the smallest specimen of P. Oolei, PI. II, fig. 1. 



Head-shield rounded in front, one-third broader than long ; the glabella 

 occupies one-third of its breadth, and is oval in outline, slightly broader in front, 

 tumid, with distinctly marked basal lobes ; lateral furrow indistinct ; surface of 

 glabella and free-cheeks covered with minute puncta ; neck-lobe rather deep and 

 prominent, free-cheeks having a furrow around the margin parallel to the border ; 

 angle of cheek produced into a short slightly curved spine. 



Thorax consisting probably of nine segments ; axis very distinct, forming one- 

 third the entire breadth of body ; axal furrows well defined, each pleura strongly 

 grooved down the centre ; extremities rounded. The eye is considerably larger in 

 this than in the preceding species, but can only be distinctly seen on the free- 

 cheek (fig. 7 c). 



Pygidium one-fifth broader than long ; the axis forms one-third of the breadth 

 at the proximal border, but diminishes rapidly to a somewhat acute point at 

 rather less than one-fourth of its entire length from the posterior margin. There 

 are fourteen segments in the axis and ten lateral pleurae which bifurcate as they 

 approach the margin of the shield. 



Hypostome (PI. X, fig. 7 h). There seems but little reason to doubt that the 

 detached free-cheek (c) and the hypostome Qi) lying upon the same slab with the 

 nearly entire specimen of P. minor really belong to one and the same specimen. 



The hypostome is as broad as it is long, the anterior margin once attached to 

 the underside of the front of the head-shield is rounded in contour, and expands 

 laterally into two small lobes ; posteriorly the hypostome is elongated into a 



