200 FISSTJRELLIDJ2. 



maximo, elongato, medio expanso. Obs. The foramen occupies 

 two-thirds the length of the entire shell, which ends abruptly at 

 the posterior end. 



7. cuspidata (f. 226), A. Ad. — Parva, minute striata, griseo 

 variegata, tenui, postice attenuate, subaeuininatii; foramine maximo, 

 postice acuminato. Obs. Differing from the last in its greyish 

 colour, in the narrowness and pointedness of the foramen and pos- 

 terior margin. These last two species may prove to be the young 

 of some other species. 



8. hiatula (f. 198), Swains. — Oblongo-subquadrata, radiatim 

 striata, fusca; antice margine valide elevato, postice margine pau- 

 luluni elevato ; foramine oblongo, magno, prope medium posito. 

 OLs. A wide species, in which the fissure is not placed so near 

 the front edge, and in which the space between the fissure and 

 margin is scarcely depressed. It forms almost a link between 

 this genus and Fissurellidea. 



9. dilatata (f. 220), A. Ad. — Oblonga, striata, subquadrata, 

 depressa, rubra; antice margine elevato vix sinuato, postice paulu- 

 liim angustato obscure quadricestato; foramine magno, supra 

 medium posito. OLs. Not quite so broad as the preceding, and 

 having the foramen rather nearer t! e front margin, with the space 

 between slightly depressed. 



10. Bakiei (f. 221), A. Ad. — Oblouga, subquadrata; margine 

 antico elevato, reflexo, lateribus antice depressis, margine postico 

 depresso subtruncnto ; costis rotundis subnodulosis antice alter- 

 natim majoribus radiata; alba, fasciis radiantibus, lineis fulvis 

 variegatis ad latere et inter costas posticas ornato ; foramine prope 

 marginem posticum posito. 



11. Tasmania (f. 223), Sowb. G. B. 2.— Quam M. Bakiei 

 angustiore, tenuiore; costis et striis tenuioribus; apice post foramen 

 elevato. OLs. Narrower than the last, with much finer strire. 



12. Nov^-Cai.eddni^; (f. 223), Sowb. G. B.2. — Ovali, rubro- 

 grisescente, minute punctata, co.-tellis minutis postice majoribus 

 radiata; margine antico elevato, margine postico subdepresso vix 

 acuminato; foramine breviusculo, prope marginem anticura posito. 

 O/js. A more regularly oval species than the preceding, and of a 

 speckled reddish colour. 



