TEITONOFUfSUS. 153 



the type of this Si'pho, but that sppcies is distinctly a Latirus, 

 and if any value attaches to an auction catalogue, for systematic 

 purposes, Sipho, Fabrieius, must be quoted in synonymy with 

 Latirus, Montfort, 1810. 



The name Tritonofusus was, according to Herrmannsen (see 

 above), proposed by Beck in 1846, and was at that time apparently 

 a MS. name attached to some specimens in the Eoyal Museum at 

 Copenhagen. During the meeting at Kiel above referred to, the 

 conchological section saw the specimens, and an account of them 

 was published in the " Amtl. Bericht " quoted, where the name 

 Tritonofusus, with its type, are set forth, but the reporter's name 

 is not given. In all probability the writer of the account was 

 Herrmannsen, who was present at the meeting. In any case, he, 

 in 1847 {o}}. supra cit.), quotes Beck as the author of the genus. 



Tt/pe. — Fusus islandicus, Chemnitz. 



Tritonofusus crebrigranosus, Tate (sp.). 



1888. Sipho crehrigranosus, Tate, Trans. Eoy. Soc. South Aiist. vol. x. 



p. 145, pi. iii. fig. 8. 



1889. Sipho crebrigranosiis, Cossmann, Ann. Geol. Univ. t. v. p. 1089. 

 1893. Sipho crehrigraiwsHs, Tate and Dennant, Trans. Eoy. Soc. Soutli 



Aust. vol. xvii. pt. 1, p. 219. 



Shell narrow, elongate ; protoconch (Plate V. Figs. 9fl— i) com- 

 posed of two and a half smooth, but slightly convex turns, the 

 earlier portion being much smaller relatively than the later, 

 which is fliintly longitudinally ridged; and this characteristic is 

 much more accentuated in the brephic stage, where spiral 

 lineations become developed, producing a tubercle at the points 

 of intersection, the ornament being bolder than in later stages of 

 growth ; whorls convex, rounded, with closely-set longitudinal 

 and spiral lineations; aperture pyriform ; outer margin thin, 

 lirate within, prolonged by a slight callosity over on to the inner 

 margin ; columella smooth, twisted ; canal long and curved. 



Dimensions. — Length 15 mm.; breadth 5'5 mm. ; length of 

 aperture 4-5 mm. ; length of canal 4 mm. 



Form, and Loc. — Eocene : Muddy Creek, Victoria. 



6. 9444. Three specimens illustrating stages of growth. 



Purchased. 



