378 PB.OCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



I have great pleasure in dedicating this species to the memory 

 of my friend, the late Mr. S. I. Da Costa, from whose collection 

 it originally came. 



GiBBULA. TENUILIllATA, n.Sp. 



Shell turhinate, chocolate, tesselated and sparsely spotted with cream 

 colour ; whorls 5, sculptured with many fine, closely-set liroe, and 

 minute, oblique, transverse strioe, presenting under a lens a lightly 

 cancellate appearance ; sutures impressed ; umbilicus moderately 

 narrow ; columella descending obliquely and somewhat sinuously, 



slightly outwardly expanded above over the umbilicus ; peristome 

 acute, the margins joined by a whitish callus; aperture subcircular ; 

 interior of shell white. Alt. 7, diam. maj.7mm. ; aperture, alt. 4, 

 diam. 3 mm. 



Hah. — North Queensland. 



Minolta oinerea, n.sp. 

 Shell roundly turbinate, shining, grey, painted above with closely- 

 set transverse bands of greyish-brown ; whorls 6 J, flattened above, 

 sculptured with a number of beaded carinoe, increasing to four on the 

 last whorl, the space above these occupied by two spiral beaded riblets, 

 a third also occurring between the first and second carinse ; sutures 

 impressed; base of shell sculptured with two spiral grooves and 

 a number of very fine spiral strige, painted with a zone of fine, 



closely-set cinereous flamraules, within which is a second zone almost 

 uniformly of the same colour ; umbilicus whitish, wide, deep, bearing 

 several small, indistinct, spiral, crenate riblets, the outer margin 

 surrounded by a coarsely crenulate carina ; columella somewhat 

 angularly arched above, descending obliquely and terminating rather 

 abruptly; peristome acute; aperture subquadrate. Alt. 6*75, diam. 

 maj. 6"5mm. ; aperture, alt. 3, diam. 2 mm. 



Sab. — ]S[orth Queensland. 



It is very difficult to give anything like an adequate description of 

 the complicated sculpture and colouring of this interesting form, and 

 I do not know of any species to which it may be profitably compared. 



