128 Transactions. — Zoology. 



xxiii., p. 89). Since then three more sj)ecies have been 

 recognised, all of which are species described long ago under 

 the generic name of Patula, viz. : — 



(a.) E. varicosa, Pfeiffer, sp. 1854 (fig. 12). I sent speci- 

 mens of E. timandra, Hutton, to Mr. Edgar A. Smith, of the 

 British Museum, to compare them with Pfeiffer's type of H. 

 varicosa. Mr. Smith most obligingly informed me that they 

 were not identical, but that Pfeiffer's Helix varicosa was 

 undoubtedly also an Endodonta, having owe tooth (overlooked 

 by Pfeiffer and Eeeve) situated on the body-whorl. It is a 

 slender lamella, and might easily be overlooked. 



(b.) E. timandra, Hutton, sp. 1883 (fig. 13), is very much 

 like the foregoing, but is smaller, more openly umbilicated, 

 has more riblets, and the armature of the mouth is different^ 

 there being tlirce lamellae, one on the body-whorl, one at the 

 base of the columella margin, and one on the outer lip. 



(c.) E. Jessica, Hutton, sp. 1883 (fig. 14). On examining 

 this shell, which is very nearly allied to the foregoing two 

 species, I found it to have six teeth in the aperture, of which 

 two are situated on the body-whorl, one at the base of the 

 inner lip, and three on the outer lip. 



According to my present knowledge, E. timandra is con- 

 fined to the North Island, the other three to the South Island. 



12. Charopa coma, Gray, var. globosa, Suter, 1892. 



This variety is the same as var. beta, Pfeifi"er, 1853 ; but, 

 as varieties are to be named in the same way as species, and 

 there exists already a CJiarojya beta, Pf. (^^ barbatula, Eeeve), 

 Pfeiffer's name can hardly stand. This variety is not iden- 

 tical with C]i. hicetta, Hutt. (=^ stokesi, Smith), as sup- 

 posed by several conchologists. 



13. Charopa caput - spinulse Eeeve, sp. 1852. Plate 

 XVI., figs. 15, 16 (: . epsilon, Pfeiffer). 



The dentition of this species has never been published 

 before, and, as the i-adula is a typical form of Charopa, I give 

 here a figure of it and of two jaws, showing the variability of 

 the latter in the same species. The jaw is membraneous, and 

 distinctly striated, not plaited. The radula has the formula 

 12 — 4 — 1 — 4- — 12. It is hardly necessary to describe it, the 

 characters being mainly the same as delineated in former 

 papers by Professor Hutton and myself for Charopa. 



14. Tesseraria* novoseelandica, Pfeiffer, sp. 1854. Plate 

 XVI., fig. 17. 



The true systematic position of this little pupiform mollusc 



* Phenacharopa, Pilsbrv, 1893 (not Tesseraria, Haeckel, 1879 or 

 1880) ; vide Man. Concli. (2), vol. ix., p. 29. 



