Notes on Palceozoic Entomostraca. 345 



16. Beteichia Kloebeni, M'Coy, var. antiquata, Jones. 

 Plate X. Fig. 11. 

 Length, | inch. 

 This fine specimen, in Lower-Liidlow Limestone, collected by the 

 late Henry Adrian Wyatt-Edgell ^ at Leintwardine, near Ludlow, 

 and sent to me for examination, soon after his leaving the Eoyal 

 Military College, and not long before his lamented death, is a large 

 individual of B. Kloedeni, var. antiquata, retaining a portion only of 

 the test. This variety was previously known from the Wenlock 

 schists of Montgomery. See " Ann N. Hist." ser. 2, vol. xvi. p. 167, 

 pi. 6, fig. 8. It has also been met with at Blaeberry Burn, Logan- 

 water, Lesmahago ; and at Kington, near Ludlow. 



17. Betkichia Kloedeni, M'Coy. Plate X. Figs. 12, 13. 

 Length, ^u and ^ inch. 



Fig. 12 shows the inside cast of a small left valve of ^. Kloedeni, 

 in a reddish, sandy, fossiliferous mudstone from the Upper Llando- 

 very beds at Howler's Heath, near Malvern. Collected by the late 

 H. A. Wyatt-Edgell, and sent to me with the above. 



Fig. 13 is a very fine and well-preserved right valve, with a 

 granulated surface, from the Wenlock Limestone of Benthall Edge, 

 Shropshire. It is the form described and figured by Mr. Salter as 

 B. tuhercidata (but it is not Kloeden's Battus tubercidatus) in the 

 " Memoirs Geol. Survey," vol. ii. part 1, p. 352, pi. 8, fig. 14. This 

 I now refer to as Bei/rtcMa Kloedeni, M'Coy, var. tuhercidata (the 

 " granulated " variety in " Ann. N. Hist." ser. 2, vol. xvi. p. 166, 

 pi. 6, fig. 9). 



Owing to the full growth of advanced age the front and hind lobes 

 are not so distinct in this specimen as in the Fig. 9 just referred to, 

 nor as in Figs. 1 and 12 of our present Plate. These conditions are 

 found frequently to occur among the somewhat variable group 

 typified by B. Kloedeni, M'Coy. 



Note on the Synonymy of the Chief Forms of British Beyriehia Kloedeni. 



I. Beyrichia Kloedeni typica. 



Beyriehia Kloedeni. M'Coy, SjTiops. Sil. Foss. Ireland, 1846, p. 58, ■woodcuts. 

 „ ,, ,, Brit. Pal. Foss. Cambridge, 1851, part 2, fasc. 1. 



p. 135, pi. 1 E. fig. 2. 

 „ gihha, Salter, Mem. Geol. Surv. 1848, vol. ii. part 1, p. 352 [gibbosa 



at p. 234), pi. 8, figs. 17, 18. 

 ,, Kloedeni, Jones, Ann. N. Hist. 1855, ser. 2, vol. xvi. p. 166, pi. 6, 



fig. 7 (smooth valve); Pal. Biv. Entom., Geol. Assoc. 1869, pp. 11 



and 14, figs. 6«, 66. 



II. B. Kloedeni, var. tuberculata [Sow. or Salter]. 



Agnostus tuherculatus, Sow. or Salter, in Murchison's Sil. Syst. 1839, p. 604, 

 pi. 3, fig. 17. Not Kloeden's Battus tuherculatus. 



Beyrichia tuberculata, Salter, Mem. Geol. Surv. 1848, vol. ii. part 1, p. 352, pi. 

 8, figs. 14, 15. (Fig. 14 has the same form, but no granulation, and may 

 have been intended for an internal smooth cast of a tuberculate valve.) 



' This promising yoimg officer of the 59th, and subsequently of the 13ih Regt., 

 died at Belfast in 1866. 



