NEW SPECIES or SHELLS. 



397 



much closer, and the interstices not grooved. The colouring and 

 form of the apex, as well as of the canal, are curiously similar, as 

 also the beading at the top of the ribs. 



OviTLTjM (Birostra) Hayi^esi, sp. uov. (PI. XXV. figs. 1, 2.) 



Testa elongata, angustata, albida, polita, utrinque rostrata, postice 

 attenuata, antice subtruncato-acuminata, extremitatibus acutiusculis, 

 lateribus leviter convexis ; apertura medio angustissima, postice paulo 

 latior, antice dilatata ; columella convexa, nitidissima, labrum incrassatum, 

 leviter sinuosum. 



Long. 34, maj. diam. 7 millim. ; apert. maj. lat. 2^, min. vix 1 millim. 



Hab. Exmouth Gulf, W. Australia (J". S. Haines). 



A graceful species allied to 0. Philippinarum, but larger and 

 differing in form. 



The specimens are nearly white, being found attached to a 

 very handsome white species of Melitodes, which is also probably 

 new to science, and of which Mr. Haynes collected several 

 specimens in the above-named locality, one of which he presented 

 to the Natural History Museum at South Kensington. The 

 colour of Ovulum is probably determined by that of the place of 

 attachment, as is the case with several well-known species which 

 occur on West-Indian Grorgonise, so that should specimens be 

 found attached to Melitodes ochraeea (of which Mr. Haynes found 

 several in the same locality) they would probably be of an orange 

 colour. Hitherto, however, they have only been found on the 

 white species. 



Trochus (Inffndibulum) baccatus, sp. nov. (PI. XXV". 

 figs. 8,9.) 



Testa breviter conica, late umbilicata, luteo-albida, nigro fuscoque 

 punctata ; anfractus 6, convexiusculi, spiraliter striati et granulis gem- 

 mulitbrmibus nigro-fuscis, fulvis et albidis quinqueseriatim dispositis 

 instructi ; anfractus ultimus ad peripheriara angulatus, infra planato- 

 eonvexus, liris 6, angustis, parum elevatis, fuscoarticulatis ornatus ; apertura 

 obliqua ; columella oblique rectiuscula. 



Alt. 12, maj, diara. 14 millim. 



Hob. Mauritius. 



A pretty little species, regularly and exquisitely spotted and 

 beaded. 



ThALOTIA WlLKIiB, sp. UOV. (PI. XXV. figs. 10, 11.) 



Testa conica, elata, grisea, albo fuscoque maculata et strigata; apice 

 fusco ; anfractus 7, planato-declives, ad suturam undulatim angulati, 

 spiraliter multi-lirati, liris rugosis, hie illic irregulariter nodulosis; an- 

 fractus ultimus iuferne angulatus ad basin levissime convexus, angus- 



30* 



