264 PROCEEDINGS OF THE 



De Ryckholt, and others, but, so far as I am aware, those of Lingula 

 mytiloides (Sow.) have not been described. Mr. John Young 

 appears to have noticed' 1 " the remains of colour in more forms than 

 perhaps any other author. In a paper entitled " On the occur- 

 rence of shells showing Colour Marking in the Carboniferous 

 limestone strata of the West of Scotland," he cites the following 

 genera as so preserved, viz. : — Orthoceras, Naticopsis, Aviculopecten, 

 Myalina, Mactra, Terehratula, and Lingula, but unfortunately no 

 species are mentioned. My friend Mr. James Bennie has been 

 fortunate enough, during his duties in connection with the 

 Geological Survey of Scotland, to meet with specimens of Lingula 

 mytiloides in the Bo'ness coal-field retaining traces of colour bands. 

 From these it appears that in this species the markings in question 

 are arranged in longitudinal, more or less wavy, and sometimes 

 irregular thin bands of a colour darker than the general surface of 

 the shell. The number of these bands varies, the smallest I have 

 observed being two, and, so far as my memory serves me, the 

 largest four. In some cases the lines become broken, when the 

 colour assumes more the condition which may be described under 

 the term " flashes of colour." 



Locality and Horizon. — Chance Pit, Kinneil, Bo'ness coal-field, 

 in shale forming the roof of the "Smithy" coal, associated with 

 Lingula sqiiamiformis, Pliili. (Mr. James Bennie). 



2. On the occurrence of Syringothyris cuspidata (Martin) in 

 Scottish Carboniferous strata. — Syringothyris ( Spirifera) cuspidata 

 (Martin) has not been met with hitherto, according to the most 

 authentic catalogues of fossils, in the Carboniferous strata of Scot- 

 land. During explorations carried on in Roxburgh shire in 1878, 

 Mr. A. Macconochie met with this species in moderate abundance in 

 the shales of the Cement-stone group of that county. Mr. Thomas 

 Davidson, F.R.S., to whom examples were submitted, considered 

 them to be a variety of S. cuspidata, with a moderately -developed 

 area. 



Locality and Horizon. — Staneshill burn and Thorlieshope burn, 

 Liddel Water, near New Castleton ; Cement-stone group of the 

 Lower Carboniferous series (Mr. A. Macconochie). 



3. Note on Spiriferina E titer idgei (Davidson), PI. VI., fig. 1. — 

 This interesting little shell was described by myself in 1876f, but 



: Proc. Nat. Hist. Soc. , Glasgow, 1868, Vol. i., pt. 1, p. 185. 

 t Quart. Jour. Geol. Soc, Vol. xxxii , p. 463. 



