OF SOUTHERN INDIA. 413 
2. ACTZONINA COLUMNARIS, Stoliczka, Pl. XXVIII, Fig. 26. 
Act. testa cylindracea, spira producta, attenuata, ultimo anfractu breviore ; suturis 
paulum impressis; superficie lineis impressis, numerosis, crasse-punctatis notata ; 
apertura perlonga, angusta, postice acuminata, antice subrotundata, latiore ; labio 
prope recto, edentulo, antice paulo incrassato. 
Spiral angle about 25°; sutural angle 10°. 
Height of spire : total of shell ... (considered as 1:00) ae soa) O40! 
Width of last whorl : total of shell ( 3 ae) = ve 028, 
This species is distinguished by its elongated, cylindrical form, having a rather 
lengthened attenuated spire, composed of from four to five flattened volutions, 
being impressed at the suture. The last whorl is somewhat higher than the spire ; 
the aperture very narrow, pointed posteriorly, broader and rounded anteriorly, the 
outer lip thin, the inner lip slightly thickened and without any folds; the colum- 
ella appears to be anteriorly very slightly truncated, but is not twisted. The 
entire surface of the shell is marked with coarsely punctated, spiral grooves, which 
are a little more distant at the middle of the last whorl. 
There is no cretaceous species of Acteonina known which is equally cylindrical 
with the present one, but some large jurassic forms, like 4. Dormoisana and acuta, 
d’Orb., belong to the same type. 
Locality.—Pondicherry, in bluish sandstone, 
Formation.—Valudayur group. 
XCIX. BULLINA, Feérussac, 1821. 
1. BuLiina AtTerNata, d’Orbigny, sp., Pl. XXVII, Figs. 17-18, 
1847. Bulla alternata, d’Orbigny, Voy. d’Astrolabe, Paléont., Pl. V, Figs. 1-5. 
Bull. testa ovato-elongata, postice angustata et truncata, ad medium sub-inflata, 
antice paulo producta, angusta ac rotundata, anfractibus postice ad marginen sub- 
canaliculatis, spira immersa ; superficie undique spiraliter punctato-striata, striis 
anterioribus ceteris aliquantum fortioribus ; apertura lineari, postice angusta, antice 
dilatata ; labio antice paululum torto, fissura distincta imstructo. 
Width of shell : its height (considered as1:00) .., ma a w. 0°49, 
The last whorl envelopes all the previous ones, the spire being immersed, though 
portions of the flattened, or slightly canaliculated, posterior edge of the inner 
whorls remain traceable; the shell is rather inflated below the middle and ante- 
riorly somewhat attenuated and rounded; the inner lip is very obscurely twisted, 
but there is a distinct fissure present, and occasionally the anterior portion of 
the last whorl is at the inner lip quite detached from the previous one. The spiral 
striation is generally somewhat more distinct on the anterior than on the posterior 
portion of the shell, but I have never observed it so strongly marked as represented 
in d’Orbigny’s figure; the strize of growth are very minute, 
51 
