Plate XVII. 



Page 

 Fig. i. Lissodendoryx vidua n. sp. a styli, x 200, b the upper end of a style, showing the axial 

 canal with a little swelling, x 585, c tylota x 200, d chela arcuata, front view and 

 side view, x 1000, c sigmata of the small form, f sigmata of the large form, x 460 . 169 



2. Lissodendoryx stipitata n. sp. a styli, b styli from the stalk, c tornota, x 200, d chela 

 arcuata, front view and side view, e developmental form, the incipient alse are seen 

 as edges turned towards the beholder, x 1000 170 



— 3. Iophon piceits Vosm. a acanthostyii of different sizes and differently spined, b tylota, c a 



not quite young developmental form, x 255, d both ends of a tylote, x 700, c chelae 

 palmatse of different sizes and different dimensions of the various parts, front view 

 and side view, x 1000, f—k bipocilla of different sizes, f side view, g half front view, 

 li from behind, i from the upper end, k from the lower end, x 1400, / acanthostylus 

 from embryo, x 585 175 



— 4. Iophon dubius Arm. Hans, a acanthostyii, b tylota, x 255, c chelse palmatae of different 



sizes, front view and side view, d a not quite young developmental form, x 1000, 



c bipocilla, front view and side view, x 1400 180 



— 5. Ioplwji frigidus n. sp. a acanthostyii, b the upper end of acanthostyii, one with distinctly 



marked, the other with slightly marked spines, c tylota, d developmental form, x 255, 

 e both ends of a tylote, x 700, / cheke palmatse of different sizes, front view and side 

 view, x 1000 183 



