Thos. Davidson—Brachiopoda of Brittany and S. Devon. 341 
we observe the crescent r, and which will be clearly seen in the 
figures of our Plate. 
Dryosotus Brimontt. 
6. Interior surface of ventral valve. 7. Interior surface of dorsal valve. 
o lateral scars, anterior scars, m median scars, 7 crescent. 
I may also note that subsequently to the publication of Professor 
King’s and my memoir on the Trimerellide, Prof. Fred. Schmidt dis- 
covered in a light yellowish limestone at Laisholm in Russia (his 
Schicht 5) a number of internal casts of a small species of Trimerella, 
and at Werden in the same country (in his Schict 6) a species of 
Monomerella. So that examples of this important family of 
Brachiopods are now known from Sweden, Russia, France, England, 
Canada and the United States, and will no doubt be discovered in 
other places. The Dinobolus Brimonti is the most ancient representa- 
tive of the family with which we are at present acquainted. 
2. Lineuta? Lesvruri, Rouault. Pl. X. Fig. 7. 
This very remarkable lanceolate species is now well known, and 
has been figured by Salter and myself. It has been questioned by 
| Figs. 1, 2, 3. Glottidia Palmieri, Dall (recent). 
1. Exterior. 2. Interior of ventral valve. 3. Interior of dorsal valve. 0. p. septa. 
4. Lingula Lesuewri, Rouault, Lower Silurian. 
M. de Tromelin whether it is a true Lingula. It entirely resembles 
in external shape and size Glottidia Palmieri, Dall, a shell that lives 
