294 SCIENTIFIC RESULTS OF THE 
The lobes of the hermaphroditic gland without developed sexual 
elements. The anterior genital mass about 2.5-3.0 mm. in length by 
a height of 2.0 mm. and a breadth of 1.0-1.5 mm. The ampulla of 
the hermaphroditic duct of yellowish color, rather thick (—0.75 mm. 
diameter), making a wide curve. about 2.5 mm. long. ‘The spermato- 
duct long; its first part thinner, about 9.0 mm. long, then through a 
stricture of the length of nearly 1 mm., passing into the thicker part, 
which in its last half increases in thickness, and, all in all, has the 
length of about 6.0 mm. by a diameter of 0.75 mm.; the last part 
(fig. 12c) passes into the penis!, in whose cavity (fig. 1265) the glans 
(fig. 12a) projects as a short club, the proper seminal duct passing 
down to the gland in nearly continual cork-screw windings, and often 
shining through the walls of the external coat. The spermatotheca 
whitish, nearly spherical, of about 1.3 mm. diameter, filled with sem- 
inal matter and detritus ; the spermatocysta elongate, nearly twice as 
Jong as the former, yellowish, deeply imbedded in the mucous gland, 
filled with ripe semen; its duct somewhat longer than the cysta. The 
vagina short.2. The mucous gland yellowish and yellow. 
The species approaches to the Z. Aystricina and L. varians (of 
the Pacific ), but differs entirely in its colors; still the possibility can- 
not be denied that further investigations may show both the Pacific 
‘species’ to be merely varieties of the old Lamellidoris muricata 
of the Atlantic. 
ADALARIA, Bergh. 
Adalaria, R. Bergh. Malacolog. Unters. (Semper, Philipp. I], ii). Heft 
XIV, 1878, p. xl. 
Adalaria, R. Bergh. Gattungen nord. Doriden, 1. c. 1879, p. 360. 
Forma corporis fere ut in Lamellidoridibus. Nothzum papillula- 
tum vel subgranulosum. Branchia (non retractilis) e foliis vix mul- 
tis, in formam ferri equini ut plurimum dispositis formata. Caput ut 
in Lamellidoridibus, latum, semilunare, tentaculis vix ullis vel brevis- 
simis lobiformibus. Aperture rhinophoriales integra, tuberculis 
anticis 2-3, calvitie postica. « 
Discus labialis non armatus. Lingua rhachide lamellis depressis 
instructa ; pleuris dente laterali interno hamiformi majore et serie 
' The exserted penis is figured by Meyer and Moebius (I. ec. taf. fig. 4) 
and mentioned as cylindrico-conical. 
» The upper end of the vagina seemed to present a particular diverticle. 
