368 PROCEEDINGS OP THE MALACOLOGICAL SOCIETr. 



least tise looking for these snails in the dry weather, as they hid 

 themselves away in the moss, and were (juite erratic in their choice 

 of trees. From one tree-trunk a dozen might be procured, while 

 careful examination of the adjoining half a dozen trees might not 

 disclose an additional specimen. Further, this discrimination referred 

 even to individuals as well as species. It was early observed that 

 particular kinds of trees were never frequented by snails, but it was 

 later absolutely proved that, even among the favoured species of 

 trees, a further particularization was carried out to individuals, 

 sometimes even to parts of one tree. I well remember one tree 

 consisting of four separate limbs ; from the first I obtained twenty 

 odd specimens, and anticipating a fine haul commenced on the other 

 three, with a total result of one specimen. Yet an investigation 

 carefully carried out provided no solution. In addition localities 

 diflfered ; no place afterwards gave such results either as to species or 

 individuals as the occasion now referred to, yet these tree-dwellers 

 were afterwards recognized all over the island on the highlands. 

 A few were obtained as stragglers on the flat, and it may be they 

 were as common on the level, but the bush was there so dense that it 

 was difficult to see even in dry weather, and an absolute impossibility 

 in dull wet weather. However, to particularize the tree snails found 

 on tliis eventful field-day. Four species were obtained associated 

 together ; the first one found and the largest of the four as well as 

 the largest Charopoid was a Ptychodon, with which I have associated 

 the name of Mr. Roy Bell, as an appreciation of his help and comrade- 

 ship in the discovery of tliese forms. The specific name Royanus will 

 always distinguish this. Tlie next largest was a most beautiful shell 

 which I refer to Calymna, and specifically call arloricola. It was 

 much scarcer than the preceding. The third was a delightful 

 Charopa with a resemblance to lleeve's anynicula, so I have termed 

 it psendanyuicula. A very minute brownish shell completed that 

 day's surprise list, and I propose to designate it Flammulina miserahilis. 

 It is a wretched-looking little shell, and it was a miserable job 

 keeping the eyes focussed to pounce upon it. 



Such a tine haul urged to further efforts, and despite the continued 

 and uninviting rain, a day later the trees in the same neighbourhood 

 were again undergoing critical investigation with interesting results. 

 On the clitfs, almost at the top, the Pronesoptipa, previously represented 

 by one dead shell from the level, was found numerously on tree-trunks, 

 which were not moss-covered and unassociated with anj- of the 

 previous day's finds. It appeared to have hidden away in crevices 

 in the bark, and only came out after a deal of rain. Higher up, just 

 on the ridge, an entirely different Tornatellina was noted on the 

 moss-covered tree-trunks alonu: with the Tornatellina I had confused 

 with T. Novoseelandica, I'fr. In tliis case again the Charopoid forms 

 were not found living witii these, and this Tornatellina was always 

 a very scarce shell. Considered criticism of the preceding results 

 iu'luced the idea of new forms, perhaps existing dne to localization. 

 Excursions to different parts of the island destroyed this, no new 

 forms being obtained, but the known ones were proved to be well 



