OP SOUTHERN INDIA. 15 



tubular. The same is most likely the ease with Muller's Qad, voracissima from the cretaceous beds 

 near Aachen. 



Meek in his Check-list of cretaceous fossils of North America (Smithson. Miscell. Coll., No. 177, 

 p. 16,) quotes six species of Teredo,- T, calamitoides , contorta, glohosa, irregularis, sellifor7ms, 

 tibialis,- and the previously mentioned Polarthus americanus, 



I have to record from South India four new species of terelinin^ which, so long as the 

 palettes are unknown, may be described under the generic name of Teredo ; this will raise the total 

 number of cretaceous species to about 26, though hardly more than one-half of them are sufficiently 

 certain as belonging to the sub-family ; in no instance are the palettes satisfactorily known. 



I.* TEEEDO, Sellius, 1732. 



1. Tekedo partita, Stoliczha, PL I, Pig. 1. 



T, testa glohosa, (Equaliter lata quam alta, striis ad medium convergentihus siib- 

 tilissimis ornata ; umhonihus distinctis, incurvatis ; auricula anteriori magna, suhan- 

 gulata, supra ad marginem incrassata ; Matu anteriori mediocri, fere triangulari ; 

 auricula postica angtistata, ab corpore testes sulco profunda separata. Tuhula cylin- 

 dracea, in jmiioribus varie torta, crassiuscula, in adultis sub-recta, transfer saliter crasse 

 ac numerose rugata, intus costa mediana ventrali, tenui ac rectiuscula instructa. 



The sub-cylindrical form and the numerous transverse rugations appear to be 

 characteristic for this species. The young shells are, as usually in living forms, 

 found boring in all directions through the wood ; they are considerably thickened 

 at the anterior end, but otherwise of much the same thickness throughout. The 

 tubes of older specimens are placed parallel to the fibre of the wood; the cast 

 exhibits a distinct furrow on the ventral side of the tube, corresponding to the lower 

 thickened terminations of the valves. Such a furrow is often to be seen on living 

 specimens of Teredos, and is produced by a slight rib on the internal side of the 

 tube. The two valves, when closed, are almost perfectly globular, the striations on 

 the outer surface being extremely fine^ so much so that they are often hardly trace- 

 able. The anterior auricle is comparatively large, occupying nearly half the height 

 of the shell ; it is anteriorly sub-angular, and on the upper side in front of the 

 beaks rather strongly thickened ; its margins are sharpened and bent externally ; 

 the furrow separating it from the body of the valve is quite indistinct, and the 

 one in the middle of the shell, where the striae of the surface converge, is only 

 traceable towards the ventral terminations ; the cast is quite smooth. The anterior 

 hiatus is broadly triangular, laterally slightly angular ; the posterior larger and sub- 

 ovate. The posterior auricles are very narrow, separated from the central area of the 

 shell by a deep groove. 



Locality, — Pound boring in fossil-wood at Ootatoor and at Moraviatoor. 



Formation, — Ootatoor group. 



* I shall again, — as in the second volume, treating on the Gastropoda of the South Indian cretaceous rocks,— adopt 

 the plan of numbering the genera consecutively throughout the whole class Pelecypoda, and give separate numbers 

 to the species under each genus. 



/ 



