102 Proceedings of the Royal Society of Victories. 



Spire a little more than half the length of the shell, the first 

 spire whorl being in contact with the preceding embryonic whorl, 

 but the succeeding ones becoming more and more unrolled 

 forming a vermetiform spiral round a very slender axis. Posterior 

 spire whorl somewhat strongly costate, but the costae may become 

 more or less obsolete towards the body whorl. The whole of the 

 spire is adorned with strong spiral threads in the type species, 

 the whorls being convex to an approximately medial angulation. 



Aperture small and oval ; inner lip enamelled within, very 

 thin, and well defined from the columella, with which it merges 

 only at the extreme anterior end ; outer lip also very thin and 

 closing in so close to the columella anteriorly as to appear almost 

 entire, and the long anterior channel shows externally only as an 

 extremely narrow slit, but the end section shows a relatively 

 large internal space which is almost circular. The axis of the 

 shell round which the whorls are coiled is somewhat undulate, 

 hence its extension into the long snout partakes of the same 

 character, and is more or less arched or twisted like a siphonalia. 

 Canal a little more than one-third the length of the shell. 



Solutofusus capinatus, sp. nov. PL VTI., Fig. 1, \a, 2. 



Shell thin, very slender, with a smooth embryo of about two 

 and a half whorls, which appear angulate medially with a rather 

 deep and well-defined suture, the eccentric apex is sharp, and 

 exsert for about one-third to one-half of a millimetre ; the 

 embryonic whorls are in contact with each other and with the 

 first spire whorl, and though they increase slightly in size 

 towards the spire yet they are of about uniform width, the last 

 half turn becomes slightly costulate as it joins the spire, about 

 two to three costulte being visible before the more complex 

 ornament appears. The apparent angulation mentioned above 

 may be regarded as a correct description for the apical whorl, but 

 the succeeding whorl being almost flat medially, and the sutural 

 excavation being so deep, it appears doubly keeled, this feature 

 becoming less distinct as the whorl becomes more convex. Spire 

 whorls five, remarkably disjoined, the space between each 

 whorl increasing towards the aperture, and the whorls gradually 

 increasing in diameter, but the latter increase is much less than 



