STEUCTUEE AND AFFINITIES OF PANDA ATOMATA. — HEDLEY. 31 



another original sketch, from a shell in the Australian Museum, 

 intermediate between Cox's and Reeve's conception of fnlconeri. 

 Did space suffice, and necessity demand, a further series of 

 intermediate forms might be furnished more closely linking 

 the one to the other of the preceding instances ; but enough are 

 afforded, it is supposed, to prove "quod erat demonstrandum." 



Panda thus gives a curious and instructive illustration of 

 the value placed by the elder systematists upon " Bulimus " 

 and " Helix," since Reeve assigned maconelli to the former and 

 falconeri to the latter, an arrangement in which Pfeitfer quite 

 acquiesced. Two colour varieties of this species might with 

 advantage be distinguished. 



var, AZONATA, var. nov. 

 Bandless, entire shell straw-yellow coloured. 



var. TIGRIS, var. nov. 

 The original dark spiral bands have here become disintegrated 

 into separate blotches, and these latter have further become 

 confluent with those above and beneath, so that the band pattern 

 is changed from regularly spiral to irregularly longitudinal and 

 zigzag, in which state it approaches the pattern of ntomata 

 and larreyi. 



In this genus, neither contour nor colouration can be relied 

 upon to furnish specific characters, and I cannot admit kershawi, 

 Brazier (P.Z.S., 1871, p 641) as a valid species. No habitat has 

 been recorded for this form between the valleys of the Hunter 

 and of the Snowy River. Yet, despite their geographical 

 isolation, southern specimens can be precisely matched, as 

 Dr. Cox has kindly demonstrated to me, by northern shells. 

 Fossil specimens of this species have been identified by Dr. Cox 

 from Victoria, but none have come under the writer's observation, 

 nor is he aware of any mention of the fact in the literature of the 

 subject. 



I add a sketch of the as yet unfigured kershaioi, from the 

 author's type, now in the collection of the Australian Museum. 



Other variations of this species are — 



var. ELONGATA, var. nov. 

 More elevated than the type, and represented by Mon. Austr. 

 L. Shells, PI. xviii., fig. 15. 



var. AZONATA, var. nov. 

 Bandless, entire shell straw-yellow coloured. 



