ODONTOSTOMINJE. 



27 



Folds within the outer Up: Sutural, puprapalatal, upper palatal and 

 lower palatal folds. 



In Tom f gems (fig. 4) and Anosloina (fig. 3), the primitive con- 



FIG. 1. 



Fio. 'J. 



FIG. 3. 



Fio. 4. 



FIG. 5. 



Fig. 1, Odontostomus (Cf/clodontina) pupoides. Fig. 2, O. (PlayiodoiUes) <lcn 

 t<itns. Fig. 3, Anostoma. Fig. 4, Totnii/ents tin-bi, talus. Fig. 5. Macrodontes 

 ,,:/,, ntustoiinix. A, angular lamella; vie, intrapalalal told; B, basal told; C, eolu- 

 uiellar lamella; Cf. fold of the colurnella; //', infraparietal lamella; LP, lower 

 palatal told; P, parietal lamella ; ,S'C (in Fig. 5), subcoluiuellav lamella (in Fig. 4), 

 siipracolumellar lamella ; SP, suprapalatal fold; Sitt., sutural fold; CJ\ upper 

 palatal fold. 



dition of the parietal armature remains, the angular, parietal and 

 infraparietal lamella? being all present and separate. In Hypentulnj- 

 ramagei the parietal lamella is absent, the other two remaining. 



