68 
PYCNOGONIDA. 
EdoAre: 
Eros: 
F1s5r7: 
Fig. 19: 
The same, lateral view. 
a. The cheliforus; d'. duct of the byssus-gland; 6. the first embryonal leg; c. the second em- 
bryonal leg; d. the proboscis; €. the byssus-gland. 
Larva of the second stage, lateral view. 
Jf. The three foremost ambulatory legs. The other letters as in the preceding figure. 
Larva of the second stage, lateral view. 
An older phase than fig. 11. 
a. Cheliforus; 6. the first embryonal leg; c. the second embryonal leg; d. the proboscis; e. the 
first ambulatory leg; 7: the second ambulatory leg. 
Fig. 13—14. Nymphon spinosum Goods. 
Larva of the second stage, lateral view. 
The larva is in a very early phase of the second stage, still lying in the egg-shell, and 
with the foremost pair of ambulatory legs only short and still unjointed. 
a. Cheliforus; a'. duet of the byssus-gland; 6. the first embryonal leg; c. the second embryonal 
leg; d. the first ambulatory leg; e. byssus-gland; Z. egg-shell. 
Larva of the third stage, from below. 
The embryonal legs and the byssus-threads have fallen off, but the articulation of the ima- 
ginal fore limbs has begun. Of the fully developed ambulatory legs only one leg of the 
second pair is kept. 
a.d. The chelifori; 6. 6. the palps; c. c. the ovigerous legs. 
Fig. 15—16. Nymphon elegans Hans. 
Free larva of the first stage, lateral view. 
The beginning of the second stage is marked by the appearance of the byssus-threads. 
mhetlerters kasket 
Larva of the second stage, lateral view. 
a. Cheliforus; a'. duet of the byssus-gland; 6. the first embryonal leg; c. the second embryonal 
leg; d. the proboscis; €. the first ambulatory leg; Z the second and third ambulatory leg; 
2. byssus-gland. 
Fig. 17—18. Nymphon Sluiteri Hoek. 
Larva of the second stage, lateral view. 
a. Cheliforus; 6. the first embryonal leg; c. the second embryonal leg; d. the proboscis; e. the 
first ambulatory leg; Z the second ambulatory leg; g. beginning of the third ambulatory leg. 
The same, from below. 
Of the ambulatory legs only the basal end is kept. 
a.d. The chelifori; 6. 6. the first pair of embryonal legs; c.c. the second pair of embryonal 
legs; d. the proboscis; e. the ganglionic mass for the embryonal legs; / the ganglion of the 
first segment of trunk; g. the whole ganglionic mass for the rest of the trunk. 
Fig. 19—21.  Nymphon longitarse Kr. 
Larva of the first stage, dorsal view. 
a.d. The chelifori; a'.d'. the ducts of the byssus-glands; 6. 6. the first pair of embryonal legs; 
c.c. the second pair of embryonal legs; d. d. the byssus-glands. 
