120 PEECY SLADEN TRUST EXPEDITION. 



Order SCAPHOPODA. 



359. Dentalium gardineri, sp. nov. (Plate 5. fig. 9.) 



B. testa magna, solidula, paullum apicem versus arcuata, aliter fere recta, straminea, 

 undique longitudinaliter arete lirata, liris apicem analem versus ad 14, la3vibus, 

 conspicuis, supra ad 50, lineis spiralibus incrementaliter multis prajdita ; apcrtura 

 rotunda, tenui, anali perparva. 

 Long. 100, diam. 6, apic. anal. 1-5 mm. 



Loc. Amirantes : Station 20, 160-209 fathoms, rough and hard shell-rubble. 

 A large, straw-coloured Deutal'mm, four inches in length, almost straight till just 

 below the apex, where slight arcuation is perceptible ; the longitudinal lirae about 

 fourteen in number, increasing to fifty at the aperture. Incremental spiral lines are 

 noticeable, closely dispersed over the surface, with the aid of a lens, the shell being 

 otherwise smooth. In the only specimen obtained there is a strong sea-break. It is a 

 much narrower species than the Japanese D. vernedei, Hanley. It is a pleasui'c to 

 connect with this fine species the name of Mr. J. Stanley Gardiner, P. U.S. 



3G0. Dentalium gemmiparum, sp. nov. (Plate 5. fig. 10.) 



J), testa alba, paullum postice arcuata, aliter fere recta, delicata, undique longi- 

 tudinaliter arete lirata, liris ad aperturam circa 35, ad apicem analem 16, angusta, 

 spiraliter et regulariter ad liras noduloso-gemmata, gemmis albis, nitidis, Isevibus, 

 parvis ; apertura rotunda, apice anali perparvo, rotundo. 

 Alt. 38, diam. ad aperturam 4, ad ap. analem 1 mm. 

 Loc. Chagos Archipelago : Diego Garcia Lagoon. 



A remarkable member of the Scaphopoda, for we know no other Dentalium, 

 possessing a sculpture nodulous with small white gemma? placed at regular con- 

 centric intervals upon the liriB or riblets. 'I'he aperture is round and somewhat 

 expanded, the anal orifice being remarkably small; the shell in form is only very 

 slightly arcuate. 



361. Dentalium pseudosexagonum, Dosh. 

 Loc. Saya de Malha Banks. 



Cargados Carajos : Station B 17, 30 fathoms, shell-rubble. 

 Amirantes : Station E 9, 34 fathoms (poor). 

 I possess specimens from the Philippine Islands sufficiently near to pronounce them 

 identical, allowing for a certain degree of variation — e. </., these specimens are 8-angled, 

 not 6, at the anal orifice. 



