COCKERELL AND COLLINGE : CHECK-LIST OF SLUGS. 3 1 



ElisoHmax, new name for Elisa, Heyn., not Elisa, Reichen- 

 bach, 1854 (a genus of birds). Elisia has also been used 

 twice {Elisia, Cantr., 1835, in Mollusca ; Elisia, Big., 

 1857, in Diptera), but I should not myself consider this 

 the same name as Elisa. I have elsewhere stated that 

 I consider Elisoiimax {Elisa) a valid genus. 

 Otoconchince. Mr. Hedley classes Otoconcha with the Heli- 

 carionince, further research having shown that its affinity 

 with the Binneyina was illusory. According to the scheme 

 of classification I have adopted, it forms a new sub-family. 

 In Messrs. Hedley and Suter's recent list of New Zealand 

 Mollusca, Otoconcha and Helicarion appear as genera of 

 Zonifidce, and Mr. Suter in a footnote expresses the opinion 

 that Otoconcha is the same as the Philippine I. genus 

 Vitrinoidea, Semper. As to this latter proposition I am 

 not competent to form an opinion, but the reference is 

 unlooked-for, and appears improbable on general grounds. 

 However, Hutton remarks that Otoconcha seems allied to 

 Peltflla, and so far as superficial appearances go, Peltella 

 is a good deal like Vitrinoidea albajefisis, Semp. (see 

 Semper's figure) ; judging therefore from external characters 

 one might just as well say that Otoconcha is allied to 

 Vitrinoidea — the more so, because we are led to believe 

 from recent researches that it has at least some real affinity 

 with it. 



This question of Otoconcha and Vitrinoidea shows how 

 entirely arbitrary is the line supposed to be drawn between 

 the snails and the slugs. 

 300 /-'.-//. Possibly these varieties do not all pertain to haliotidea s. str. 

 as now understood. 



303. This is what was formerly called T. bisulcata var. major, and 

 it may be a question whether it should not be called 

 T. major, Gass. and Fisch. Similarly Giraiia biitleti is 

 a name given to what was AustiEnia gigas var. minor, and 

 strict priority would oblige us to write G. minor, G.-A. 

 instead of butleri. 



318. T. aitrigaster. I know nothing of this beyond what has 

 appeared in an advertisement on the cover of Journ. of 

 Conch. 

 Daiidebardia. It seems now to be generally recognised that 

 Libania and the five names I have placed under it, as 

 synonyms represent only one valid sub-genus. Westerlund 

 proposed Endaudebardia because none of the other names 



