88 Dentition of Pulmonale Mollusks. 



Sagda. 



Sagda connectens, Ad. Jamaica. Mr. Jas. Milligen. 



Lingual membrane with 26-1- 26 teeth. The centrals have their plates 

 short in comparison to the reflection, and broad. The middle cusp is long, 

 with a long slender point. The side cusps are sub-obsolete, with short, 

 acute, triangular points. The laterals are of the same type as centrals, but 

 bicuspid, the outer cusp more developed than the external cusps of the cen 

 trals. The marginals are wide, low, with one long, oblique, blunt, narrow 

 inner cusp, and one or more side small cusps. 



The genus is included in the Vilrinea of von Martens; but I have shown 

 that it belongs to the Helicea, the marginal teeth being quadrate, not aculeate. 



Sagda Haldemaniana, Jay. Jamaica. Messrs. Gloyne and 

 Vendreyes. 



Jaw slightly arcuate, of almost equal height throughout ; ends blunt; no 

 anterior ribs ; no median projection to the cutting edge. 



Lingual membrane with about 30-1-30 teeth, as in the last species. (PI. 

 II, fig. K.) 



Sagda Jayana, Ad. Jamaica. Mr. Henry Vendreyes. 

 Jaw smooth ; scarcely any median projection to cutting edge. 

 Lingual membrane with teeth characterized as in last species. 



Endodontic. 



I regret not succeeding in obtaining the jaw of any species of 

 this genus, the more because some doubt of its existence has been 

 expressed. It is, however, probable that it will be found, as no 

 agnathous genus has yet been noticed with the quadrate marginal 

 teeth which characterize E. incerta, and also E. tumuloides, 

 Garrett. 



Endodonta incerta, Mousson. Huahine Island. Mr. A. 

 Garrett. 



Lingual membrane (PI. II, fig, 1ST) with 11-1-11 teeth, of which four on 

 each side are perfect laterals. The marginals (of which the last is shown in 

 the figure) are but a simple modification of the laterals. They differ from 

 those of tumuloides in not having a bifid inner cutting point, unless indeed I 

 have, from their exceeding minuteness, failed rightly to interpret them. 



Endodonta tumuloides, Garrett. Earotonga Island, Cook's 

 Island. Mr. Garrett. 



Lingual membrane (PI. II, fig. M) with 17-1-17 teeth, with about seven 

 perfect laterals on each side. Teeth as in last species; but the inner cutting 

 point of the marginals is bifid. 



