PLATE XLVII. 



MoilOgraptuS— conti 'n ued. 



Figs. 



1 a — d. — Monograptus convolutus (Hisinger). (Page 467.) 



1 a. Very large specimen, showing Eastrites-Yike character of Hie proximal thecse. Figured 

 Carruthers, Geol. Mag., 1868, pi. v, fig. la. Dobb's Lian. Birkhill Shales. 

 Geological Survey of England and Wales. 



1 b. Smaller, but well preserved specimen. Pishnack Burn, Wee Queensberry. Birkhill 

 Shales. Geological Survey of Scotland. 



1 c. Incomplete specimen, but showing well the Rastrites-like character of the proximal 

 thecse. Plewlands Burn, Raehills. Birkhill Shales. Geological Survey of Scotland. 



1 d. Less well preserved specimen. Duffkinnel Burn, Wamphray. Birkhill Shales. 



British Museum (Natural History), S. Kensington. 



2 a, b. — Monograptus delicatulus, Elles and Wood, sp. nov. (Page 478.) 



2 a. Typical specimen. Sundhope-on- Yarrow. Birkhill Shales (zone of Monog. gregarius). 



Lapworth's Collection. 



2 b. Good specimen, showing character of proximal thecse. The Corrie, Dobb's Linn. 



Birkhill Shales. Elles' Collection. 



3 a — e. — Monograptus decipiens, Tornquist. (Page 469.) 



3 a. Two specimens crossing one another. Long Linn, Dobb's Linn. Birkhill Shales 



(zone of Monog. gregarius). Elles' Collection 



3 b. Specimen broadly curved. E. side quarry, N.E. of Fagwr-fawr Farm, Pont Erwyd. 

 Geological Survey of England aud Wales. 



3 c. Specimen irregularly curved, preserved in full relief. Dobb's Linn. Birkhill Shales. 

 Geological Survey of Scotland. 



3 d. Specimen with rather longer thecse. Dobb's Linn. Bii'khill Shales. Sedgwick 

 Museum. 



3 e. Small specimen. Clan yard Bay, Port Logan. Birkhill Shales. Geological Survey of 



Scotland. 



4 a — /. — Monograptus triangulatus (Harkness). (Page 471.) 



4 a. Specimen preserved in full relief. 430 yds. S.S.E. of Bryn-chwith Farmhouse, Pont 



Erwyd. Zone of Monog. triangulatus. Geological Survey of England and Wales. 



4 b. Fairly complete specimen. Donaghadee. Birkhill Shales. Belfast Natural History 

 Museum. 



4 c. Large fragment. Dobb's Linn. Birkhill Shales. Geological Survey of Scotland. 



4 d. Fairly complete specimen. Ibid. 



4 e. Specimen, preserved mainly as a cast. Bheidol Gorge, Pont Erwyd. Jones' 

 Collection. 



4 /. Very large specimen, irregularly bent, preserved mainly as a cast, with thecse partly 



embedded. Dobb's Linn. Birkhill Shales. Dairon's Collection, Kelvin grove 

 Museum, Glasgow. 



5 a — d. — Monograptus triangulatus, var. major, Elles and Wood, nov. (Page 472.) 



5 a. Typical specimen. Garple Linn, near Moffat. Brrkhill Shales. British Museum 



(Natural History), South Kensington. 



5 b. Small proximal fragment. Dobb's Linn. Birkhill Shales. Elles' Collection. 



b c. Small fragment, preserved as a cast. 430 yds. S.S.E. of Bryn-chwith Farmhouse. 

 Geological Survey of England and Wales. 



5 d. Specimen showing great length of thecse. Dobb's Linn. Birkhill Shales. Elles' 

 Collection. 



