Paloeozoio Bivalved Entomostraca. 415 



Number of the speci- 

 Genera and Species. mens in the collections. 



,— '^ ~ > 



Vine. Smith. 



Beyrichia lacunata, J. 8f H. 2 5 



Bollia bicollina, J.^H. 9 1 



uuitlexa, J. ^ H. 3 



Klcedenia intermedia, J. ^ H. (Jones's collec- 

 tion). 



, var. marginata, J. & H. 1 



Strepula concentrica, J. Sf 11. 3 



irregularis, J. i^- 11. 3 7 



beyrichioides, J. Sf H. 2 2 



Bollia Vinei, J. ^ H. 2 1 



, var. mitis, J. ^ H. 1 



Placentula excavata, J. Sf H. 5 18 



Primitia lenticularis, J. ^- H, 6 20 



Roemeriana, J. Sf J£. 5 



fabulina, J. Sf H. 2 9 



variolata, J. ^ H. 2 7 



paucipunctata, J. Sf H. 29 



humilis, J. ^ H. 10 2 



valida, J. S,- H. 15 6 



, var. breviata, J. 8f H. 9 



, var. augustata, J.SfH, 5 



tersa, J. ^ H. 5 



umbilicata, J. Sf H. 1 17 



cristata, J. Sf H 8 



ornata, J. Sr H. 4 2 



cornuta, J. i^- H. 1 



fequalis, J. Sf H. 4 



diversa, J. Sf H. 11 



• seminulum, Jones 20 



furcata, J. ^- H. 1 



The numbers of specimens of the species described in 1837 

 can be seen in the memoirs themselves. 



IX. EXPLANATION OF THE PLATES. 

 Plate XII. 



[_All the figures are magnified 20 diameters.] 



Fig. 1. Octonaria undosa, sp. nov. a, right valve; b, edge view. 



Fig. 2. Octonaria odofunnis, sp. nov. a, left valve ; b, edge view of cara- 

 pace. 



Fig. 3. Octonaria octofonnis, var. intorta, nov. a, right valve ; b, edge 

 view of carapace. 



Fig. 4. Octonaria octoformis, var. simplex; nov. a, left valvo ; b, edge 

 view of carapace. 



Fig. 5. Octonaria (>ctofortnis,\i\x. informis^nox. a, right valve; i, edge 

 view of carapace. 



Fig. 6. Octonaria octoformis, var. bipartita, uov. a, right valve ; b, edge 

 view of carapace. 



29* 



