Fossils of South Devon. ve) 
Vilmarensis, @’A. and de V., Pl. pugnans (= Pl. minazx, Ph. Pal. Foss.), 
H, interscapularis, Ph. (including H. depressus, Aust.), H. macrotatus, 
Aust. (= H. tuberculatus, Ph. not Mill.), H. ornatus, Goldf., Pl. 
Jritillus, Wiet. and Zieler; H. Vicarii (= H. pentangularis, Ph. not 
Mill.), Pl. quintangulus (= Pl. pentangularis, Aust. not Mill.), and 
Eh. crenatus, Goldf.?; Receptaculites, sp. and Serpula? semiplicatus, 
Sandb.; and also the following which are new, Pierinea obovata, a 
small deep species like Pt. tewturata, Ph., but without concentric 
lamelle; Pt. placida, flatter and more angulated than the last and 
with more distant ribs than A. urbana, Barr.; Pt. dilatata, which is 
larger and wider and with fewer and more distant ribs than the 
preceding, crossed by crowded growth lines; P#. crenatissima, a 
longer shell with very anterior umbo, and covered with fine 
granulated lines crossing minute rays; Pt. bellula, a species like 
Pt. fasciculata, Goldf., but with few alternating ribs crossed by 
distant zigzag striae; Aviculopecten hirundella, separated from Pt. 
texturata by its shorter hinge-line and finer reticulation (the right 
valve has transverse marks similar to those of Pt. ala, Barr.); A. 
aviformis, a flat recurved shell much produced and rounded behind, 
with very small umbo and wings; A. comma, similar to the pre. 
ceding, but much smaller and with reticulated surface; A. gracilinus, 
a flat elongate sub-equilateral form with minute umbo, notched 
anterior ear and close alternating ribs; Mytilus Robertsii, which is 
more ovoid and less produced in the postero-superior region than M. 
dimidiatus, Goldf.; M. stultus, a short squarish form with fine con- 
centric strize and a few stronger ones; M. pinnoides, which is 
shorter and has a more direct umbo than M. uncinatus, Hichw. ; 
Myalina elliptica, a smooth convex ovoid shell differing from Unio 
castor, Wichw., in its more incurved umbo and less dilate wings ; 
Megalodon ? columbinus, separated from M. carinatus, Goldf., by its 
finer regular plaits, more terminal umbo and the contour of its 
elevated keel; M.? prominens, larger than the last, and with coarser 
wavy plaits, loftier and more projecting umbo and more oblique 
anterior margin; Ctenodonta? lepida, a small flat transverse shell, 
which is narrower and more convex anteriorly than P. modiolaris, 
F. A. Ro.; Cardiomorpha? polita, a flat oblique species unlike A. 
damnoniensis, Ph., in its smoothness and its shorter hinge-line ; 
Cypricardia neglecta, with fewer stronger ribs and more definite 
wing than M. scalaris, Ph.; C. guttata, with fewer plaits and 
rounder indentations than OC. crenistria, Sandb.; C. ensiformis, a 
much flatter and wider shell than C. neglecta, and with more and 
finer plaits; Hdmondia? dubia, a large wide convex shell, with a 
recurved anterior umbo, deep area and close indistinct bifurcating 
growth lines; Hexacrinus perarmatus, with calix like H. macrotatus, 
Aust., but covered with sharp regular non-confluent tubercles ; 
H. microglypticus, with a convex calix, very long basals and fine 
ornamentation; Platycrinus aberrans, with trilobed attachment, 
elongate calix, three squarish basals, four or five long radials inter- 
ealated with one large and one small subsidiary anal; Haplocrinus 
decipiens, a minute crinoid having a short calix with an elevated 
