PLATE X1AY— continued. 



Figs. 



7 a, b. — Monograptus testis, var. inomatus, Elles. (Page 440.) 



7 a. Type specimen, figured Elles, Quart. Jo-urn. Geol. Soc, vol. 

 lvi, p. 408, fig. 20 a. Garbett's Hall, Middletown Brook, Long 

 Mountain. Wenlock Beds. Watts' Collection. 



7 b. Co-type, figured Elles, loc. cit. supra, fig. 20 b. Trewern Brook, 



near Middletown, Long Mountain. Elles' Collection. 



8 a — /. — Monograptus Haiti (Barrande). (Page 443.) 



8 a. Proximal end, presented in a sub-ventral view. Thirlstane Score, 



near Moffat. Birkliill Shales (band of Bastrites maximus). 

 Lapworth's Collection. 



8 b. Typical distal fragment, showing apertural spines. Belcraig 

 Burn, near Moffat. Band of R. maximus. Lapworth's Collec- 

 tion . 



8 c. Distal fragment in relief, apertural spines turned away and thus 

 concealed from view. Thirlstane Score. Band of R. maximus. 

 Lap worth's Collection. 



8 d. Fragment in relief, apertural margins partly embedded. Ibid. 



8 c. Wide distal fragment. Ettrickbridge End, S. Scotland. Band 



of R. maximus. Geological Survey of Scotland. 

 8/. Proximal fragment, preserved mainly as a low cast, probably 

 referable to this species. Quarry S. side main road from 

 Devil's Bridge to Rhayader, 200 yards S. of Bodcoll Farm. 

 Castell Group. Geological Survey of England and Wales. 



9 a, It. — Monograptus M'Coyi, Lapworth. (Page 446.) 



9 a. Type specimen, figured Lapworth, Graptolites of Co. Down, 



1877, pi. vi, fig. 2. Tieveshilly, Co. Down. Belfast Natural 

 History Museum. 

 !>. Wide fragment, possibly referable to this species. Belcraig 

 Burn, near Moffat. Band of R. maximus. Lapworth's Collec- 

 tion. 



10 a — -/. — Monograptus Sedgwickil (Portlock). (Page 441.) 



10 a. Typical distal fragment, with conspicuous apertural spines. 

 Pomeroy, co. Tyrone. Upper Llandovery Beds. British 

 Museum (Natural History), S. Kensington. 



10 I). Proximal fragment, on same slab as fig. 10 a. 



10 c. Proximal fragment, showing sicula. Sundhope-on-Yarrow, S. 

 Scotland. Upper Birkliill Shales. Lapworth's Collection. 



10 d. Broad specimen, with conspicuous apertural spines. Glenkiln 

 Burn, S. Scotland . Upper Birkhiil Shales. Lap worth's 

 Collection. 



10 e. Specimen with slightly recurved proximal end. Duffkinnel 

 Burn, Wamphray. Upper Birkhiil Shales. British Museum 

 (Natural History). 



10/. Long fragment, with concave curvature, apertural spines con- 

 cealed for the most part. On same slab as fig. 10 e. 



