EXPLORATION OF ALASKA. 295 
dentium externorum sat applanatorum preditis. Ingluvies buccalis 
bulbo pharyngeo petiolo connata. 
Penis glande parva inermi. Vagina brevis. 
The genus has been established by the author (1878) to receive 
the D. proxima and its allies. he Adalarie externally approach 
nearest to the Lame/lidorides ; their branchial leaves are also dis- 
posed mostly in horseshoe form, but fewer in number. The head and 
the tentacles are more as in the Acanthodorides. - The back is nearly 
as in the Lamellidorides, but the granules are sometimes more pointed. 
The opening for the rhinophoria as in the Lamedlidorides, with plain 
margin ; before them two to three tubercles, behind them the glabella. 
The lip-disk only covered by a strong cuticula. The armature of the 
tongue approaching to that of the Acanthodorides. ‘The rhachis of the 
tongue carries depressed small yellow plates; at each side of these a 
large hook-formed yellow plate, and further outwards a series of 
smaller, nearly colorless plates, of which the inner ones are more 
compressed, the rest depressed. The sucking-crop as in the Lameéli- 
dorides, through a petiolus fixed to the bulbus. The salivary glands 
as in the Lamellidorides. The cesophagus wider at its root. The 
penis unarmed; the vagina short. 
The Adalurie are Lamellidorides with a tongue resembling that of 
the Acanthodorides ; they form a sort of connecting link between these 
two groups. 
Of the typical species, the spawn is known (through Alder and 
Hancock) and some few notices have been published about their 
biology (through Meyer and Moebius); Sars mentions! the swimming 
of Ad. Lov’nt. 
The genus seems to belong to the northern oceans ; only five species 
seem hitherto known. 
1, Ad. prozima (A. et H.). Oc. Atlanticus sept. 
2, Ad. pacifica, Bgh., n. sp. Oc. Pacif. 
. Ad. virescens, Bgh., n. sp. Oc. Pacif. 
Ad. albopapillosa (Dall). Oc. Pacif. 
Ad. Lovént (A. et H.). Oc. Atlant. sept., 
CU i Co 
ry 
. Adalaria proxima (Alder et Hancock). PI. IX, fig. 12-15. 
Doris prozima, A. et H. Monogr. Part VI, 1854. Fam. 1, PI. 9, figs. 
10-16 ; Part VII, 1855. Pl. 46, suppl. f. 8. 
Doris prozima, Meyer u. Moebius, Fauna der Kieler Bucht, I, 1865. 
P. 69-71 ; taf. V b, fig. 1-8. 
1 Sars, Bidr. til Sédcdyrenes. Naturhist. 1829, p. 17. 
