156 Mr. F. Chapman on some 
Family Cytherellida. 
CYTHERELLA, Jones & Bosquet [1849]. 
Cytherclla Smithii, Jones. 
Cytherella Smithii, Jones, 1887, Ann. & Mag. Nat. Hist. ser. 5, vol. xix. 
p- 192, pl. vil. figs. 15 a, 6, & 16a, b. 
This neat little species is common at Mulde, and they 
appear to be favourably grown as regards size. It was 
originally described from Woolhope. 
Silurian ; Mulde, Gotland. 
Order TRILOBITA. 
Phacops (Dalmanites) limulurus, Hall. 
Several specimens of young individuals of the above species, 
but more or less fragmentary, were found in the Mulde clay 
washings. Fragments of the pygidium with the spine 
attached were occasionally found. 
MOLLUSCOIDEA., 
Clas BRYOZOA. 
Order GY MNOLAUMATA. 
Suborder CYCLOSTOMATA. 
? Spiropora intermedia, Vine. Rare. 
Fistulipora, sp. Rare. 
Suborder TREPOSTOMATA. 
Callopora florida, Hall. Rare. 
Trematopora solida, Hall. Very rare. 
Cladopora repens (Linné). Very common. 
sparsa (Hall). Very rare. 
Suborder CRY PTOSTOMATA. 
Ptilodictya lanceolata (Goldfuss). Rare. 
Rhombopora lineinodis, Ulrich. Common. 
