REPORT ON THE PYCNOGONIDA. 161 
PLATE XIX. 
Fig. 1. Ego-mass of Nymphon brevicollum, Hoek : magnified 16 diameters. 
» 2. Transverse section of egg-mass of Nymphon brevicollum, Hoek; magnified 41 
diameters. 0, opening occupied by the ovigerous leg; s, small pores left 
between the eggs ; c, the substance soldering the eges together ; m, mud. 
» 3. Transverse section of the egg of Nymphon brevicollum, Hoek ; magnified 272 
diameters. 
» 4. Structure of the protoplasm of one of the segments of the same ege ; magnified 
575 diameters. 
» 5. Cells of the blastoderm and segments of the nutritive yolk of Nymphon brevi- 
caudatum, Miers ; magnified 272 diameters. 
» 6. Nuclei of the cells of the blastoderm of the eggs of Nymphon brevicuudatum, 
Miers ; magnified 575 diameters. 
» 7. Transverse section through the egg of Nymphon brevicaudatum, Miers ; magni- 
fied 94 diameters. 
» 8. Embryo of Nymphon brachyrhynchus, Hoek, showing the three pairs of append- 
ages and the proboscis ; magnified 94 diameters. 
» 9. Front part of the embryo of Mymphon brevicaudatum, Miers, seen ventrally ; 
magnified 135 diameters. 
,», 10. The embryo of Nymphon brevicuudatum, Miers, ventral view : magnified 94 
diameters. : 
,», 11. Transverse section through the egg of Mymphon brevicaudatum, Miers: 
magnified 94 diameters. a, mandible ; ), first pair of legs ; c, d, second and 
third pair of cephalic appendages. 
» 12. Larva of Nymphon brevicollum, Hoek, dorsal view ; magnified 94 diameters. 
» 13. Larva of Nymphon brevicollum, Hoek, ventral view ; magnified 94 diameters. 
PLATE XX. 
Fig. 1. Larva of Nymphon brevicollum, Hoek ; magnified 94 diameters. 
, 2. Spinning apparatus in the mandible of the larva of Mymphon brevicollum, Hoek : 
magnified 94 diameters. 
, 38. Front part of the larva of Nymphon hamatum, Hoek ; magnified 94 diameters. 
» 4. Spimning apparatus in the mandible of the larva of Nymphon hamatum, Hoek ; 
magnified 272 diameters. 
, 9. Spinning apparatus in the mandible of Nymphon longicoxa, Hoek ; magnified 
272 diameters. 
» 6. Larva of Ascorhynchus minutus, Hoek ; magnified 272 diameters. 
(ZOOL, CHALL, EXP.—PAKT x.—1881.) K 21 
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