koroiM 



ins have .1 liver without side-branches, but a gall-bladder; they 

 mhI and two seminal ( spermatheca and spermatocyst). In the 



roup, which is very rich in Conns, the liver is branched, no blood gland is 

 side (spermatoc) st). 



Nudibranchiata holohepatica. 



R. Bergh, System der nudibranchiaten Gasteropoden '). 



This family comprises onlj the Dorididae together with the Doriopsidae and the Phyllidiadae 

 is the dubious and somewhat deviating Corambidae Common to all i>i' them with the single 

 ■ m of the Phyllidiadae is the gill which is formed of more or less, single or compound, lea 



not retractile, and is placed in the median line of the hack, as well as 

 the position of the anal aperture, which, in consequence of the position of the gill, is found behind 

 in the arch <>r rinj^ formed by the gill-leaves. 



The Dorididae have a strong bulbus pharyngeus, often provided with labial plates, but almost 

 with the exception of the Bathydoridae) wanting real mandibles. 



Doridii lae | >haner< >1 iranchiatae. 

 I am. Goniodorididae. 



Lamellidoris, Aid. et 1 lane 

 R. Bergh, System der nudibranch. Gasteropoden. I.e. 1892. p. 1152 — 1154. 



This genus, which belong to the sucking phanerobranchiate Dorididae (the < ■oniodorididaci is 

 distinguished from the Adalariae, which it resembles very much in outei structure, by the presence of 

 two prominent chitinous lists below in the inner mouth, and by the narrow radula that has only one 

 ' plate. 



The Lamellidoridae belong almost exclusively to the colder seas. 



Lamellidoris muricata 1'). I". Muller). 



K. Bergh, on the nudibr. gaster. moll, of the north pacific ocean (Scientific res. of the explor. of Alaska. 



Vol.I. art V— VI), second part 1880. p.221— 224. PI. IX, fig. 18; PhXI, fig. 10 12. 



P1.V, fig. 31 32. 



< >i this species two specimens were taken on the iG& of May [895 at Trangisvaag between 

 Laminarix and red algae. 



The smaller individual was milv 0-5""" long, the larger one, which was examined more closely, 



The colour was whitish with a yellow tinge, the rhinophores were yellow. 

 The outer form was the common one; the tubercles , „i the back were powerful, most of them 

 rather truncate; the rhinophores ami ti had the common form; the number of gill-leaves was 



they wire to be discerned. 



Reiseu im . der Philippines II, in. .Will Heft r o 1 160. 



