1850.] 



BUCKMAN ON LIAS PLANTS. 



415 



of Strensham, Worcestershire, and has been named in honour of the 

 intelligent investigator of the insect remains of the bed whence it was 

 obtained. 



NAiADACEiE. Delicate parallel-veined freshwater Endogens, leaves 

 simple, pellucid — ^much like those of the Potamogeton or Pond- 

 weed — ^parallel-veined, without stomata. 



Remains of these plants occur in great quantity in a thin band of 

 limestone associated with the Insect bed, which from the prevalence 

 of these vegetables has been named the *' Plant bed " by Brodie, 



The three forms indicated below are found intermixed and crossing 

 each other in the slabs of stone when split up, and along with them 

 are sometimes innumerable specimens of Cypris and Cyclas. The 

 species are distinguished by the following characters : — 



1. Naiadita lanceolata, Brodie*. Leaves sessile, lanceolate- 

 acuminate. Fig. 2. 



2. Naiadita obtusa, Buckman. Leaves sessile, ovate, somewhat 

 blunt at the apex. Fig. 3 a,b. 



3. Naiadita petiolata, Buckman. Leaves ovate-lanceolate, on 

 short petioles. Fig. 4. 



Fig. 4. 



Magnified 6 times. 



Magnified about 6 times. 



The specimens from which the figures were taken were obtained 

 from Bristol. These are the most abundant plants in the bed, and 

 are found to a greater or less extent throughout its range. They are 

 from the Rev. P. B. Brodie' s cabinet. 



CuPRESSUs? latifolia, Buckman. Leaves closely appressed to the 

 stem, broad at the base, apex bluntly pointed, dorsum elevated so 

 as to give the leaves a sharp triangular outline on a transverse 

 section. Fig. 5. 



This no doubt belongs to the Cypress or a near ally. It has much 



* Fossil Insects, p. 92 et seq. and Murchison's Geology of Cheltenham, 2nd ed. 

 Appendix. 



