201 



Semicassis, sp. 



G. 5541. Mutilated example of what is possibly a new species 

 of Semicassis. It is 4 3 mm. in length; the whorls are convex, 

 those of the spire have five to six prominent spiral lines broken up 

 into granulations, and these are confined to the posterior portion of 

 the body -whorl, between the shoulder and the suture; the middle 

 of the body-whorl is smooth, or only very faintly lineated, but the 

 spiral sulci are well marked in the neighbourhood of the anterior 

 canal. It is allied to S. suhgranosa, Tate, but has no longitudinal 

 costfe. From Muddy Creek, Victoria. Purchased. 



G. 9548. Cast of a species of Semicassis, allied to S. suffiata, 

 Tenison-Woods. From the Eocene of Waipara, New Zealand. 



Sir James Hector Coll. 



Genus MORIO, Montfort. 

 [Conch. Syst. vol. ii. 1810, p. 479.] 



Galeodea, Link, Besch. Rostock, Abth. iii. 1807, p. 113 {nan Olivier, 



1791). 

 Cassidaria, Lamarck, Cours Zool. 1812, p. 119. 

 Echinora, Schumacher, Essai Nouv. Syst. Habit. Testaces, 1817, 



pp. 75, 249. 



Shell vcntricose, not varicos<? ; outer margin reflected, often 

 ere mil ate ; columellar border plicate; canal long, twisted. 

 Type. — Buccinum eclunophoriim, Linnaeus. 



Morio gradata, Tate (sp.). 



1889. Cnsfiidnria grndata, Tate, Trans. Roy. Soc. South Aust. vol. xi. 

 p. 169, pi. viii. tig. 1. 



Protoponch small, composed of one and a half turns implanted 

 obliquely on the succeeding whorl ; it is sharply defined from 

 the shell proper. The most interesting facts concerning the mode 

 of growth are to be gleaned by observation of the brephic stage. 

 On escape from the capsule the animal appears to have been 

 undecided on even the main lines of its subsequent ornament ; 

 and it is found at that period of growth to consist, first of all of 



