Cheeseman. — On some new Species of Nudibranchiate Mollusca. 223 



front, pointed behind, and often protruded beyond the mantle when the 

 animal is crawling. Odontophore broad, of 35 rows of teeth ; central teeth 

 none, laterals from 40 to 45 on each side, all similar in form but the inner 

 the smallest, stout, smooth, strongly hooked. Mantle spicules very numer- 

 ous, straight or slightly bent, thickest in the middle and tapering gradually 

 to the extremities. 



Not uncommon between tide-marks in Auckland harbour, feeding on 

 sponges and corallines. The position of the branchiae, whictr instead of 

 forming a more or less complete circle round the anus are placed in a 

 single flat row in front of it, would appear to remove this species from 

 Doris proper ; and I have little doubt but that it will ultimately form the 

 type of a new genus. 

 8. Chromodoeis aureo-maeginata, n.sp. 



Body i-lj inch long, linear-oblong, much depressed, expanded and 

 rounded in front, then contracted, and gradually tapering to a point behind. 

 Colour pellucid white, with a narrow bright golden line just within the 

 margin of the mantle on both surfaces. Mantle quite smooth and even, 

 greatly expanded in front and forming a broad and thin veil that extends 

 far beyond the head, abbreviated posteriorly, and not nearly concealing the 

 foot, sometimes deeply notched on the right side ; margins thin, even. 

 Dorsal tentacles rather long, retractile within simple-edged sheaths, linear, 

 tapering a little upwards, laminae about twenty. Branchial plumes nine 

 (seven in one specimen), simply pinnate, erect or incurved at the tips, 

 retractile within a common cavity. Foot much longer than the mantle, 

 narrow, pointed behind, very thin and flexible. 



This is a very handsome and delicate species. I have only seen four 

 specimens, three of which were obtained in Auckland harbour, and the 

 fourth on the coast near Waiwera. 

 4. DoRiDOPSis ciTRiNA, n.sp. 



Body 2-3 inches long, a little depressed, elliptic oblong, equally rounded 

 at both ends. Mantle very large, margin thin and almost translucent, 

 wavy ; upper surface roughened with indistinct low and broad irregularly 

 shaped pustules ; under-surface smooth. Colour usually a pale lemon yellow, 

 but varying from nearly white to a dark orange, always more or less freckled 

 with minute superficial opaque-white specks. Dorsal tentacles clavate, 

 upper two-thirds strongly laminated, lamina 19-20, retractile within 

 simple-edged sheaths. Branchiae five, large, ramose, tripinnate, set round 

 the anus in a circle that is interrupted behind, the two posterior the largest 

 and the most branched, the whole retractile within a common cavity. Foot 

 oblong, rounded in front and behind, margin thin, even. There is a sKght 

 transverse marginal groove in front through which passes the tubular pro- 



