1894.] 



SLUG OF THE GENUS JANELLA. 



527 



Janella maculata, sp. now 



Animal much flatter than J. bitentaculata. Dorso-meclian 

 groove distinct and continuous to the tip of the tail. Ground- 

 colour dirty yellow, with numerous irregular black spots and 

 dashes ; a large, black, oval-shaped mark immediately behind the 

 pulmonary orifice. Head slightly lighter than the rest of the body. 

 Foot dirty yellow, marginal portions distinct from median plane. 

 Pulmonary orifice small and inconspicuous. 



Length in alcohol 33 millim. 



Habitat. Forty Mile Bush, North Island, New Zealand 

 (E. Suter). 



The flat back of this species reminds one of Veronicella, whilst 

 the colouring is similar to dark-coloured examples of Geomalacus 

 maculosus, Allm., which I have occasionally seen. 



Anatomy. 



Generative System. — There is a single vestibule, from which the 

 penis passes off as a lateral organ. In its natural position it is 

 twisted upon itself, as shown in fig. 3. Its first portion is slightly 



Generative system of Janetta maculata. 

 (Lettering of this and the four following figures.) 

 ov, oviduct. 

 pr, prostate. 



p, penis. 



r, rectum. 

 r.m, retractor muscle. 

 r.s, receptaculum seminis. 



st, stomach. 



v, vestibule. 

 v.d, vas deferens. 



alb.gl, 

 b.c, 



albumen gland, 

 buccal cavity. 





h.d, 



h.gl, 



i, 



I, 



crop. 



hermaphrodite 



hermaphrodite 



intestine. 



liver. 



duct, 

 gland. 



ce, 

 ov', 



oesophagus, 

 free oviduct. 





