318 RECORDS OF THE AL'STRALIAN MUSEUM. 



Position of opouugs. — Typical of the genus. 



Anatoiitii. — Described and figured by Semper. 



(ji-oiip c/idracter. — Penis gland and caitilaginuus element absent from 

 the penis. 



Localitij. — -New Guinea (Semper, Vienna Museum) ; (Tappanme 

 Cauefri). 



Onchihiim I'AMkmi, Scni/irr. 



OnrhidiiuH ihnneHi, Semper, Heis. ini Aicli. Pliil., iii., Landmoll., vi., 

 1882, p. 270, taf. XX., fig. 2, taf. xxi., fig. \). 1,1., Leiidenfeld, Fruc. 

 Linn. Soc. N.S.Wales, x., 1886, p. 731. /-/., Lendenfeld, gmnt. 

 .lourn. Micro. Sci. (2), vi., 1886, p. 775. /(/., Tenison Woods, .Join n. 

 Roy. Soc. N.S.Wales, xxii., pt. ii., 1S88, p. 170, pi. vii., fig. 9-U. 

 i(/., Tapj)aroiie Cauefri., Faun. Mai. N.Guinea, 1883, p. 213. 



E.iieninl i-liio-iKiera. — Body oval, bjick strongly arched. Head large 

 and often piojecting beyond the inantle border. Tentacles short, and 

 conical. H^'ponota smaller than tlie greatest width of the foot sole. 



Average size: Length 20 mm., breadth 15 mm., height 7 mm.; 

 greatest width of the foot sole 11 mm. 



Mantle sctdiiture. — The mantle is finely gianulaled between small 

 scattered papillae. The middle field appears smooth com|)aied to the 

 outer field, wheie the papilla? are more numerous. Many of tlie papillj^ 

 bear eyes in varying numbers, and these may be so pnnninent that they 

 cause the mantle to appeal' S[)otted. In a number of s|)ecimens large 

 multicellalai' glands are present; their presence is probably contingent on 

 the stage of growth, or they may be seasonal. 



Colour. — -The colour above is olive or green, and an ii'regular darkei' 

 patterning may be present. The undersides of the mantle are dark blue, 

 while the foot and head are yellowish in colour. 



I'osition of opeiiiiitj!f. — Typical of the genus. 



AiKitoiiiii.- — -Described and figui'ed by Semper. Histology oi the 

 doi'sal tubei'cles and eyes by Lendenfeld and Tenison Woods. 



({roup i-Jtdiuffter An ;i [)pendiculai' gland is present, but cartilaginous 



element is absent from the penis. 



Locality. — Sydney, New South Wales (Sempei', from Diimel, (Jodeffroy 

 Museum) ; Port Jackson, New South Wales ( Australian Museum) ; ? New 

 Guinea (Tappai-one Canefi'i). 



UnCHIHIUM FUN(ilKOR.MK, Sfantsrliiilsli-I/. 



( hir/iiiliinn finnjifonin', Slantschinsky, Zool. .I;i lirl) , Syst., xx v., l!'07, p. 371, 

 taf. xii., figs. 4-6. 



l<].rh'nial clianicter,<. — ^'I'lie body is egg shaped, back not strongly 

 arched. The greatest breadtli is across the anterior part. The hyponota 

 aie sloping, and are much smallei' than the greatest width of the foot sole. 

 Head small aiul retracted ; tent.acles thin and short. 



Average size: fiength 2 l'3 mm., brt^adth 182 mm., height 13 mm. ; 

 greatest width of the foot sole 10 mm. 



