l54 Transactions. — Zoology. 



The specimen figured came from Dunedin. It resembled the description 

 and size of H. fatua, except that it was shghtly spotted with rufous. It 

 differed from H. zealanclia, in being only sub-carinated. Its remarkable denti- 

 tition and jaw of course take it out of Helix. Probably it must be formed into 

 a new genus, but I have not the necessary books for determining this point. 



LiMAX AGRESTis, LimicBus. I liavc no doubt now that my L. molestus is 

 this species. The differences that I pointed out were the non- obliquity of 

 the keel, which Mr. Binney says is quite inconstant, and the different shape 

 of the ovo-testis. In this latter point I had not compared our slugs with 

 European examples, but trusted to Mr. Newton's figure in the Quar. Jour. 

 Micros. Science, N.S., vol. 8, p. 26 ; as, however, I find that the teeth are 

 quite identical, I di'op my name. The radula has 93 transverse rows of teeth, 

 each row having 42-1-42. On PL III., fig. h., I give figures of a central, 

 lateral, and marginal tooth, from one of my type specimens from Dunedin. 

 The jaw is figured at fig. p. 



MiLAx ANTiPODUM, Pfeiffer. Jaw very slightly arcuate, with a slight 

 median projection. (PI. Ill,, fig. q.) 



Eadula -06 inch in diameter, and about two and two-third times as long, 

 with about 92 transverse rows of teeth, which are slightly curved, the con- 

 vexity being posterior, (PI. IV., fig. s.) Teeth 40-1-40, of which 16 are 

 laterals. The central tooth has a single cusp, the shoulders of which slope 

 gradually into the base, and each carries a small cutting point. In the 

 laterals the shoulders are more strongly marked, but the inner one gradually 

 dies away and its cutting point gets very minute, until on the 13th or 14th 

 tooth it cannot be seen, and the outer one is very small. In the 15th and 

 16th teeth the median cutting point rapidly increases, and approaches in 

 size the aculeate marginal teeth. (PI. III., fig. g.) 



The specimen figured came from Dunedin, but I have also found it in 

 the bush at Governor's Bay, Banks Peninsula. 



MiLAx EMAEGiNATDS, Hutton. The jaw is narrow, nearly straight, with a 

 slight median projection, (PI. III., fig, s.) 



The radula is -07 inch in diameter, with about 90 transverse rows of 

 teeth, which are slightly curved, the convexity being posterior. Teeth 

 46-1-46, of which about 16 are laterals. These teeth differ from those of 

 M. antipodimi in having the cutting points much larger ; the shoulders in 

 No. 1 lateral are much more sloping, and the shape of the reflexed part of 

 No. 14 is quite different. (PL III., fig. i.) I have figured the teeth of a 

 small specimen from Dunedin. 



Aeion fuscus, Midler. My A. incommodus is, I think, identical with this 

 species, of which I had seen no description until this year. I have only 

 seen it from Dunedin. The ribbed jaw is figured in PL III., fig. r. The 



