448 



PROCEEDINGS OE THE GEOLOGICAL SOCIETY. [Juiie 21, 



placed among the vegetable fossils. It belongs to the genus Teu- 

 dopsis, Deslongchamps, which is distinguished from Lolkjo only by 

 the different form of its horny pen. In the recent genus the pen is 

 lanceolate, with a long and slender shaft in front, whUe in Teu- 

 dopsis it is spatuliform, with a short and somewhat broad shaft m 

 front. Specimens found at Calvados show the ink-bag stiU pre- 

 served and in its proper position. 



To this I propose to give the name of Teudopsis 

 Brodiei. This interesting fossil was obtained by the 

 Rev. P. B. Brodie from the insect-bed of the Purbeck 

 series of Dorsetshire, in which he has done such 

 important service to geology by his patient and 

 persevering investigation of the fragmentary remains 

 of insects buried in it. 



The species hitherto known are all from the 

 Upper Lias of France or Wiirttemberg ; this species, 

 therefore, carries the form somewhat higher in the 

 geological series. The following diagnosis wiU be 

 sufficient to distinguish it : — 



Tetjdopsis Beodiei, sp. nov. 



The horny bone anteriorly elongated and tapering 

 to the (broadish) apex. The boundary lines of the 

 anterior portion subconcave, extending two -thirds 

 down the bone, where it reaches its greatest width ; 

 the posterior portion oval, with a blunt termination. 

 The whole surface is marked by faint longitudinal 

 striae, which diverge outwards on the expanded j,,^^aopsis Brodiei.. 

 portion of the bone. 



EXPLANATION OF PLATE XIX. 



Figs. 1-3. Oolithes ohtusatus, Carr. 



Figs. 1 & 2, natural size. The ruptured opening, tlu'ough which the clay 

 filling the interior obtained access to it, is shown in fig. 2. Fig. 3. 

 Fragment of the shell, magnified, to show the ]narkings on the surface. 

 Figs. 4-7, 10. Oolithes sphcBricus, Carr. 



Fig. 4. Specimen in which the amorphous material filling the cavity of 

 the egg remains. Figs. 5, 6. Two yiews of the same egg nearly covered 

 with its shell. Fig. 7. The internal cast of another, showing, around 

 the edge where it is still inclosed in the matrix, portions of the shell 

 still remaining. These figures are the size of nature. Fig. 10. Frag- 

 ment of the shell, magnified, to show the markings on the surface. 

 Figs. 8, 11. Oolithes hathoniccB, Buckman. 



Fig. 8. Natural size. Fig. 11. Fragment of the cast of the shell, showing 

 the mai'kings of the surface. 

 Fig. 9. Fragment of the shell of a recent Turtle. 

 Figs. 12-17. Fluid-casts in shale from Carboniferous rocks. 



Fig. 12. Exhibiting three small fruit-like casts, and a flat irregular-shaped 

 cast. From South Wales. Figs. 13, 15. Specimens from Cape Breton, 

 N. America. Figs. 14, 17. Specimens from South Wales. Fig. IG. 

 Specimen from Old Cumnock, Ayrshire. All natural size. 



