Little-kno'wn Victo7'ian Fossils. 109' 



Tegnieii fairly higli, covered by small hexagonal plates, a few of 

 which are seen in the impression from the fossil. Arm ossicles 

 smooth, usually having the deep ventral groove exposed. 

 Primibrachs, height equal to width. Secundibrachs slightly 

 elongated. Arms, three of which only are visible, branching oni 

 4th primibrach, giving rise to two slender armlets, which 

 subsequently branch again at unknown intervals (this last 

 structure was seen in detached fragments). Stem pentagonal, 

 with sulcate sides. Stem ossicles short, consisting of large pro- 

 jecting joints, and smaller non-salient ones. Stem canal, 

 pentagonal. 



Measurements. — Dorsal cup, 7.5 mm. high ; width above, 10 

 mm.; width below, 3.5 mm. Length of arms visible to 40 mm. 

 Width of stem at 5 mm. below cup, 2.75 mm. 



Observatio7is. — This species resembles B. quinquelobus, Bather^ 

 (from the Silurian of Dudley) in the form of the cup ; the arms, 

 however, are slender and more closely adpressed at the axils in 

 our species. 



Occurrence. — Found in a bluish micaceous sandstone, which 

 also contains remains of Homalonotus harrisoni. The crinoidal 

 remains occur chiefly in casts, of which, however, good impressions 

 may be taken, as the rock is tenacious. 



Locality and Horizon. — Royal Park, Brunswick (probably near 

 the Model Farm). Collected many years since by Mr. T. Harrison, 

 and presented by him to the National Museum. [390-2], 

 Silurian. 



Order OSTRACODA. 

 Genus Beyrichia, McCoy, 1846. 

 Beypichia kloedeni, McCoy. 



McCoy, 184G, Synopsis Sil. Foss. Ireland, p. 58 (woodcuts). 

 Id., 1851, Brit. Pal. Foss. pt. 2, fasc. 1, p. 135, pi. IE., fig. 2. 

 Jones, 1855, Ann Mag. Nat. Hist., ser. 2, vol. xvi., p. 165, ph 

 vi., tigs. 7 and 9. 



Jones and Holl, 1886, it>id., ser. 5, vol. xvii., p. 349. 



This rather variable form appears to be one of the commonest 

 Victorian species, so far as we can tell from the limited collections 



1 Ann. Mag. Nat. Hist., series 6, vol. ix. 1892, p. 189, pi. xi., figs. 1, 2. 



