PULMONATA. 177 



8. MiLAX UMBROSUS. 



Body rugose, above bro^\-n and white variegated, beneath 

 white, spotless ; clypeus anterior ; head nearly entirely retractile 

 under the shiehl ; tail strongly keeled above ; apertui-e of respi- 

 ration on the hinder part of the shield. Shell ovate-oblong, 

 very thin, flattish, rather thickened near the tip. 



Parmacella variegata, Philippi, Moll. Sicil. i. 128. 

 Limax umbrosus, Philippi, Moll. Sicil. ii. 102. 

 Hab. Sicily. 



9. MiLAX ANTIPODARUM. B.M. 



Ovate, attenuated, rugose (in spirits), brown, back sharjily 

 keeled to the shield ; back with parallel grooves diverging from 

 the shield, with short straight branches passing across from one 

 to the other; shield oblong, short, roimded behind, smooth, with 

 netted grooves ; breathing hole rather behind the middle of the 

 right side ; foot in three bands, the central band rather the 

 broadest, with series of gi-ooves on each side from a zigzag cen- 

 tral groove, the side bands with close, parallel, straight cross 

 grooves. 



Hab. New Zealand. 



3. PHOSPHORAX. 



Body thick, broad ; the hinder part of the mantle with a mar- 

 ginal ciisk formed oi part of the mantle, which is lucid green and 

 phosphorescent in the dark. Tail rounded. "Aperture for 

 generation and i-espiration like Arion," according to the ligin-e 

 rather in front of the middle of the mantle. Shell rudimentary 

 under the mantle, as in Limax. 



Phosphorax (uoctilucus), Webb Sf Berth. Ann. Sci. Nat. 1833, 

 xxviii. 307. 



Gray, P. Z. S. 1847, 169. 430. 

 Limax, sp., D'Orb. in Ferussac, Moll. Terr. 76. t. 2. f. 8. 

 Philippi, Handb. Conch. 238. 



It is doubtful whether this genus belongs to Arionidce or Li- 

 macidae. It appears to have some affinity to the preceding genus, 

 which has induced me to place it here rather tiian in the former 

 family. 



" Limax noctiluciis is furnished with a similar a])erture in the 

 mantle as that in Arion extraneiis, from whence escapes a phos- 

 phorescent matter."— FerMSsac, Bull. Sci. Nat. 1827, x. 300. 



