Figure 
4b, 
4c. 
4d. 
or or 
erp 
or 
6 a. 
6 b. 
il Bi, 
1h. 
201 
Area on the female answering to the head and showing the antennule and its other organs, 
$< OR 
Genital area of female, >< 68; g. genital aperture, %. hole (or very small thin-skinned area 
with minute holes), 7. one receptaculum seminis indicated by a dotted line, with a stalk of a 
spermatophore, s’., attached to its orifice; s. spermatophore attached to the orifice of the 
other receptaculum which is not drawn. 
Antennula, antenna, maxilla and maxilliped from the right side of a not quite full-grown larva 
seen from below, 196. 
5. Choniostoma mirabile H. J. H. 
Female seen from below, X 4. 
Ovisac with eggs, XX 4. 
Ovisac with full-grown larve, >< 4. (These three figures, fig. 3a—3c, are also found in my 
report in *Dijmphna-Togtets zool.-bot. Udbytte’’.) 
6. Choniostoma Hansenii Giard and Bonnier, 
Rostrum of female cut off and seen from right side, > 203; a. membrane of the mouth- 
border, b. hairs of the mouth-border, ¢. maxillula, ¢’. additional branch of the maxillula (its 
distal part is broken off, but indicated by dotted lines). 
Larger part of the terminal face of the rostrum shown in fig. 5a, 321; d. labrum, e. mandible. 
PLATE Xd. 
1. Choniostoma mirabile H. J. H. (continued). 
Head of female, > 104; a. antennula, b. olfactory seta, ¢. antenna, g. rudimentary maxilliped, 
h. sub-median skeleton, /. frame of the head, &’. lateral process of the frame, /’’. chitinous 
knots belonging to the frame and lying partly beneath the soft skin, ¢. posterior chitinous 
ring, w. anterior chitinous ring. 
Genital area of female, >< 104; e. solid chitine, 7. one receptaculum seminis indicated by 
dotted lines (the other receptaculum is omitted). The genital apertures are open. 
Young one in the Nauplius stage seen from left side, >< 81. 
Young one in the Nauplius slage seen from below, > 81. (Fig. le and 1d are found in 
“Dijmphna-Togtet’’.) 
Hinged larva, X 210; s. adhesive plate. The sete of the two natatory legs on the left side 
of the figure are omitted. 
Anterior part of a full-grown larva pulled out of its egg-membrane, >< 261. 
Pupa seen from below, 110; «@. antennula, s. adhesive plate. Posteriorly and on the sides 
the outline of the contents is somewhat remoyed from the margin, and posteriorly are seen 
the hairs of the animal shining through the skin of the pupa. 
Large pupa seen from below, > 40. 
Smaller pupa seen from below, > 40; s. adhesive plate. The contents marked with a 
greyish tint. 
Small pupa seen from below, 40. 
26 
