EEPORT ON THE PYCNOGONIDA. 157 



Nymphon longicoxa, Hoek (figs. 8, 9). 



Fig. 8. Spines at the sixth joint of the ovigerous leg of a male ; magnified 272 dia- 

 meters. 

 „ 9. Genital opening of the male ; magnified 136 diameters. 



Nymplion compactwn, Hoek (fig. 10). 

 Fig. 10. Last two joints of the leg; magnified 7 diameters. 



Nymphon longicoUum, Hoek (fig. 11). 

 Fig. 11. Auxiliary claws ; magnified 272 diameters. 



Nymphon hrevicollum, Hoek (figs. 12, 13). 



Fig. 12. Articulation (?) in the fifth joint of the ovigerous leg of the male; magnified 

 94 diameters. 

 „ 13. The ovigerous leg of the male ; magnified 7 diameters. 



Ascorhynchus orthorhynchus, Hoek (figs. 14, 15). 



Fig. 14. Mouth, front view; magnified 5 diameters. 

 „ 15. Genital pore of the female ; magnified 64 diameters. 



Ascorhynchus glaher, Hoek (fig. 16). 

 Fig. 16. Articulation of the proboscis; magnified 6 diameters. 



PLATE XVL 



Structure of the integument of Nymp)hon robustum, Bell (figs. 1-3). 



Fig. 1. Transverse section of the integument ; magnified 272 diameters. «, spine ; b, 

 respiratory cavity ; c, setse ; d, nerve ; e, blood-corpuscles ; /, epithelium. 

 ,, 2. Setas ; magnified 575 diameters. 

 „ 3. Set£e ; magnified 575 diameters. 



Structure of the integument oi Nymp)honhamatum, Hoek (figs. 4-6). 



Fig. 4. Surface of the fourth joint of the leg of a male ; magnified 94 diameters, g, j^ores. 

 „ 5. Structure of the gland ; magnified 272 diameters. 



,, 6. Transverse section of the thigh of a male ; magnified 94 diameters, g, pore ; 

 k, l^lood ; i, intestinal ccecum ; h, gland. 



Structure of the integument of Nymphon brevicaudatum, Miers (fig. 7). 



Fig. 7. Transverse section of the fourth joint of the leg of a female ; magnified 56 

 diameters. {, as in fig. 6 ; I, mature egg ; m, immature eggs ; x, mud. 



