1891.] GEOGRAPHICAL DISTRIBUTION OF SLUGS. 217 



Mr. E. A. Smith as Athoracophorus virgatus, and the original 

 specimens are in the British Museum. 



Athoracophorus, Gould, 1852 {^■Janella, Gray). — ^A New- 

 Zealand genus, consisting of small species with a dorsal groove, 

 but in the typical forms no triangular " mantle " like that oi Aneitea. 



A. bitentaculatus (Q. & G.). — New Zealand. 



A. bitentaculatus forma antipodanim (Gray). — New Zealand. 

 Gray's type is in the British Museum, as well as a specimen from 

 Wellington {Otago Univ. Museum). The variety differs from the 

 type in being without spots. 



Subg. Konopliora, Hutton. — This subgenus or section scarcely 

 differs from Atlioracoplioriis, but the dorsal groove, in a specimen 

 in the British Museum, is not carried forward medially beyond the 

 point where it branches, and the diverging branches converge below 

 the tentacles and unite just above the mouth. 



A. marmoreus (Hutton). — New Zealand, South Island. 



A. marmoreus forma nov.: 22 millim. long (in alcohol). Whitish, 

 with scattered pale brownish depressed- raised tubercles, foot with a 

 fairly well-defined margin. Dunedin {Otago University Museum), 

 in the British Museum. This form differs very much in colour from 

 Hutton's description of the type. 



Subg. Pseudaneitea, nov. — Small Slugs of New Zealand and the 

 Auckland Is., resembling AtTioracopliorus, but showing a decided 

 tendency towards the formation of a " mantle-area " like that of 

 Aneitea. The Janella papillata of Hutton may be taken as the 

 type. 



A. pa^illatus (Hutton). — New Zealand, North Island and South 

 Island; also Auckland Is. and Chatham Is. A specimen from Dun- 

 edin (Otago University Museum) is in the British Museum. This 

 species is widely different from A. bitentaculatus, of which it was 

 considered a variety. The " mantle-area " is quadrangular, and the 

 edges of the foot are excavate-grooved. The dorsal groove persists 

 somewhat on the face. 



A. verrucosus, V. Mts. in Simroth. Auckland Is. Very nearly 

 allied to the last. The " mantle-area " is triangular. 



A. marmoratus, V. Mts. in Simroth, Auckland Is. This will 

 probably form a distinct subgenus or section. The specific name is 

 unfortunately chosen, as there is already a marmoreus of Hutton. 



Neojanella, n. g. The most simply developed of the family, 

 lacking both the " mantle-area " and the dorsal groove, 



Neojanella dubia, n. sp. — Length (in alcohol) .53 millim., breadth 

 1 1 millim. Sole not differentiated into parts, and only a very slight 

 groove between the sole and back. No " mantle-area." Respiratory 

 orifice situated on the back, slightly to the right of the median line. 

 Tail rounded, flattened, no keel, no mucus-pore. Sole pale yellowish. 

 Back pale yellowish, marbled all over with black or dark bluish 

 grey. Respiratory orifice pale, on a pale patch, which is ringed 

 with black. Head injured and shrivelled in the specimen described. 



