Dr. II. Woodtcard — Carboiiiferoii.'i Tri/olj/ies. lo-"} 



Since I published my monograph on Carboniterous Trilobites 

 (1883-1884, Pal. Soc. Men., pp. 1-SG, pis. i-x), I have given in this 

 Magazine for 1894 (Dee. IV, Vol. I, pp. 481-489, PI. XlV) 

 descriptions of two new species, namely, IViillipsia Vau-der-GrachtIi 

 and P. Folleni, from the Carbonaceous shale, banks of the Kiver 

 Hodder, Stonyhurst, Lancashire. 



In November, 1895, I examined a number of specimens sulimitted 

 to me by Dr. G. J. Hinde and I\Ir. Howard Fox. from the Culm of 

 Devonshire and from a white siliceous rock at Ilannaford Quarry, 

 near Barnstaple. These represented forms already described as 

 Ph'llipsia Leei, Ph. minor, Ph. Cllffordi, Phillipsia'? (a larval form), 

 Grifjitltides acanfhiceps, G. lov/jispiims, Proetns sp. A, Proetus sp. b 

 (Q."J.G.S., vol. li, 1895, pp. 646-649, pi. xxviii, figs. 1-8). 

 Mr. J. G. Handing, Miss Partridge, and Mr. A. K. Coomara- 

 tSwamy, F.G.S., have also sent me specimens from Barnstaple for 

 examination, some of which I hope to figure and notice shortly. 



Last year, when visiting my friend Mv. E. Howarth, F.K.A.S., 

 F.Z.S., the energetic Curator of the Public Museum, Weston Park, 

 Sheffield, I discovered that this museum possesses a most excellent 

 series of Trilobites from the Carboniferous Limestone of Derbyshire, 

 of the existence of which I was previously unaware. 



The collection was derived from two sources: — (1) Pui'chased 

 with the geological collection of the Rev. Urban Smith, vicar of 

 Stoney Middleboro' (near to Eyam), Derbyshire, an ardent geologist 

 who during many years' residence in this district formed a large 

 collection chiefly obtained from the Carboniferous Limestoue of his 

 own immediate neighbourhood. The specimen H. 88. 1103, 

 Griffithides longiceps, Portlock, figured on our PI. VIII, Fig. 6, 

 enlarged three times nat. size, is from this collection. (2) The 

 second collection was purchased as a part of the museum of Thomas 

 Bateman, Esq., of Middleton Plall, near Bakewell, Derbyshire. 

 Mr. Bateman wrote several books on the antiquities of Derbyshire 

 and Yorkshire, and his archaeological and geological collections were 

 purchased for the Sheffield Museum (see lieview of Mr. Howarth's 

 Catalogue of Bateman Collection, Geol. Mag., 1901, p. 37). The 

 specimen H. 93. 118, of G. longiceps, figured on our Plate (PI. VIII, 

 Figs. 7, S, enlarged three times nat. size), is from the Bateman 

 Collection. From the Carboniferous Limestone of Wettin Hill, 

 Derbyshire. 



It is most rare to meet with specimens from the Carboniferous 

 Limestone, such as the two here figured, in which the head, thorax, 

 and abdomen (or pygidium) are preserved united in the same 

 individual ; the thoracic segments are very commonly absent, and 

 the head-shield and pygidium are usually luund separately, so that 

 their description is often attended with considerable difficulty and 

 uncertainty. 



I set out with the full conviction that the above exanq)les, the 

 details of which are so remarkably well preserved, entitled them to 

 specific distinction ; but after more careful study 1 can only conclude 

 them to represent a more slender variety of G. lowjicrps. the axis ot 



