584 GASTROPODA. \0pisthobranchia, 



sides of the back ; they are more or less fusiform and circular in trans- 

 verse section ; each contains a cnidocystic sac with numerous nemato- 

 cysts. Generative orifices on the right side, a little in front of the 

 first group of papillae ; the anus on the same side, beneath the second 

 group of cirri. The cutting-edge of the jaws denticulate. Radula 

 uniserial, the teeth lanceolate, with several sharp and long denticles 

 on each side. Nervous system composed of 4 ganglia in its central 

 part. 2 cerebral and 2 pedal. Eyes sessile. Otocysts containing 

 numerous otoliths. 



Distribution. North Atlantic. Mediterranean, Ceylon. Amboina, 

 East Africa. New Zealand. 



1. Hervia (?) Corfei, Hutton, 1881. 



Montagua Corjei, Hutt., T.N.Z.I., xiii, 1880 (1881), 203. Cratena Corfei, 

 Hutt., Index, 68. Hervia (?) Corfei, Hutt. : Eliot, P. Mai. S., vii, 328. 



Tentacles approximated, tapering, standing erect at some distance 

 behind the oral tentacles ; a minute eye at their outer bases. Oral 

 tentacles distant, tapering, half as long again as the tentacles. Body 

 prolonged posteriorly into a long tapering tail. Branchice in 4 or 5 

 rows on each side of the back, crowded, linear, pointed, unequal. 

 Foot grooved along the centre, the margin thin ; contracted anteriorly 

 and then produced on each side into a curved tapering fold directed 

 backward. Foot, back, tentacles, and oral tentacles translucent 

 white ; a dead-white longitudinal line down the centre of the tail. 

 Head pale pink. Branchiae bright red. tipped with dead-white. 

 (Hutton.) 



Length about 25' mm., of which the tail is more than one-fourth. 



Hob. Governor's Bay, Lyttelton Harbour (C. C. Corfe). 



Fam. PROCTONOTIDJE, Alder and Hancock. 

 Janidce, Bergh. 



This family superficially resembles the true Eolids. but offers 

 several differences of organization. Except in MadreUa. the radula 

 is multiseriate ; the anal papilla is situated near the end of the back 

 in the median line. The cerata, together with the hepatic diverticula, 

 extend in front of the rhinophores along the anterior margin. There 

 is generally a crest between the rhinophores. Anterior tentacles 

 atrophied ; foot broad. 



Genus 1. ANTIOPELLA, Hoyle, 1902. 



Antiopella, Hoyle, J. of Conch., 1902, 214. Type : Jan-itfi cristatitM, Delle 

 Chiaje. Janus, Verany, 1844, preoccupied in Hymenoptera, 1835. An- 

 tiopa, Alder and Hancock, 1855, preoccupied in Diptera, 1800. 



Animal elongated oval ; rhinophores perfoliate. united at their 

 bases by an arched crest. Cerata cylindrical, simple, crowded, 



