122 TKILOBITES OF GIRVAN. 



Nicholson and Etheridge figure a crushed example from Craighead (ojh tit., 

 p. 109, pi. viii, fig. 4). It appears to me that this form should certainly rank as a 

 distinct variety, if not species. 



Salter does not state that the variety arenaceus differs from the variety 

 ml carats by anything but the non-mucronate pygidium, and makes no mention of 

 the distinctive characters of the axis. 



There is one slightly imperfect hypostome of an Encrinurus from Dow Hill 

 probably referable to this species and the variety arenaceus. It does not appear 

 to differ from typical examples of the Wenlock E. punctatus, except in the 

 anterior end being rather more obtusely rounded. 



(1) E. punctatus, var. calcareus. 



Collections. — Mrs. Gray ; Museum of Practical Geology ; Edinburgh Museum. 



Horizons and Localities. — Saugh Hill Group (M. Llandovery) : Newlands. 

 Camregan Group (U. Llandovery): Camregan Wood; ? Bargany Pond Burn. 

 Penkill Group (Tarannon) : Penkill. Bargany Group (Tarannon) : Bargany Burn. 

 Wenlock Series : Knockgardner. 



(2) E. punctatus, var. arenaceus. 



Collections. — Mrs. Gray; Museum of Practical Geology; Edinburgh Museum; 

 Woodwardian [Sedgwick] Museum. 



Horizons and Localities. — Stinchar Limestone Group (Llandeilo) : Craighead; 

 Minuntion. Balclatchie Group (Llandeilo) : Ardmillan ; Dow Hill. Drummuck 

 Group (U. Bala) : Penwhapple Glen. Mulloch Hill Group (L. Llandovery) : 

 Mulloch Hill; Rough Neuk. Saugh Hill Group (M. Llandovery) : Woodland 

 Point. 



2. Encrinurus multisegmentatus (Portlock), 1843. Plate XVI, figs. 9 — lift. 



1843. Amphion multisegmentatus, Portlock, Geol. Rep. Londond., p. 291, pi. iii, fig. 6. 



1843. Ampyx'i baccatus, Portlock, ibid., p. 262, pi. iii, fig. 11. 



1846. Encrinurus multisegmentatus, M'Coy, Synops. Silur. Foss. Ireland, p. 46. 



1853. Encrinurus multisegmentatus, Salter, Mem. Geol. Surv., dec. vii, art. iv, p. 7. 



1854. Encrinurus multisegmentatus, Morris, Cat. Brit. Foss., 2nd ed., p. 107. 



1857. Encrinurus multisegmentatus, Nieszkowski (e. p.), Mon. Trilob. Ostseeprov. (Arcliiv f. Naturk. 

 Liv.-Est.-Kurl., ser. 1, vol. i), p. 609. 



1858. Encrinurus multisegmentatus, Schmidt (e. jj.),Untersucli. Silur. Form. Esth. (Arcliiv f. Naturk. 

 Liv.-Est.-Kurl., ser. 1, vol. ii), p. 190. 



1861. Encrinurus multisegmentatus, F. Romer, Foss. Faun. v. Sadewitz, p. 75, pi. viii, figs. 7 a, b, c. 

 1868. Encrinurus multisegmentatus, Bigsby, Thesa.ur. Silur., p. 51. 

 1877. Encrinurus multisegmentatus, "Woodward, Cat. Brit. Foss. Crust., p. 35. 



1881. Encrinurus multisegmentatus (?), Schmidt, Rev. Ostbalt. Silur. Trilob., pt. i, p. 227, pi. xiv, 

 figs. 14, 15; pi. xv, figs. 19, 20. 



