26 



NILS HJ. ODHNER 



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notum jagged all round; the posterior lappets being somewhat 

 larger. A high longitudinal serrated crest extends in the median 

 line from head to gills, and, on the foot, a lower one; the crests 

 and the borders of the notum are held expanded by means of 

 bristles of elongated spicula contained in the lappets. A texture 

 of shorter spicula is expanded in the tegument of the whole 

 body. Rhinophores sessile, not retractile; their posterior sides 

 laminated, and split by a longitudinal furrow. Gills 4 — 5, simply 



pinnate. Head veil incomplete in 

 front, united to and immediately 

 passing into the notum; its sides 

 produced into a pair of oral lobes. 

 Radula 1. 1. 0. 1. 1, like that of 

 Goniodoris. Pharynx covered by 

 3^ a cuticula, without jaws, and bear- 

 ing a sessile ingluvies buccalis 

 (fig. 10). Penis armed with series 

 of small hooks as in Goniodoris. 



Lophodoris danielsseni 

 Friele & Hansen (fig. 9). Apelvaer, 

 40-50 fms, 1 sp., I. 6— Aale- 

 sund, 1 sp., 1. 7 — Valderssund, 1 

 sp., I. 7 — Utne, Hardanger, 50 

 — 60 fms, 1 sp., 1. 4 2 — Body elongate-ovate. Notum with thin, 

 irregularly jagged border forming some larger lobes at the sides of 

 the gills. Foot elongate, narrow, slowly tapering backwards, with 

 thin margins. Dorsal crest as high as the breadth of the borders 

 of the notum. Branchiae consisting of a broad axis and a few^ 

 small simple projections on each side of it. Genital opening in 

 front of the posterior half of the notum. Eyes very small, sessile 

 (fig. 10, e). 



Radula with a small hook on the marginal teelh (cf. G. O. 

 Särs, 1878, pl. XIV, fig. 7). 



Fig. 9. L. danielsseni (cf. p. 47). 



