PLATE XXIII. 



l-'Ki. 1. — Desmacidon kerguelmenniii R. & D. var. antaretim var. u. ; «, oxea (x 160); b, side view; 

 h\ front view of isocliela ( x 17fiO) ; c, a variety with smaller palmate tooth (x 17(iO) ; d, (1>, side 

 and front views of isochela from type of D. kenjuehnensix, R. & 1). ( x 1700) ; p. 37. 



Fig. 2. — Desmacidvn kerguflcaennis var. cactoides var. n. ; a, strongylate oxea ( x 160) ; h, i\ front and 

 side views of isochela ( x 1760) ; p. 38. 



Fi(i. 3. — Desmacidon xpinigera Kii'kp. ; a, h. oxeas (x 160) ; c, c', side and front views of palmate isochela 

 (X 176(1), p. 39. 



Fig. 4. — Desnturidon macandrina Kirkp. ; a, oxea (x 160) ; b-b^, ancorae unguiferae (x 700) ; p. 40. 



Fiii. .'). — Cercklochela lankederi Kirkp.; «, oxea (x 160); i, c, d, e, canonochelae, developmental forms 

 ( X 700) ; /, lateral view showing lamellae ( x 700) ; g, lateral view of side opposite to lamellae 

 (x 700); h, buck view, i.e., of the shaft, showing straight line of axial canal within the right 

 edge ( x 700) ; k, half of a spicule broken across ( x 7u0) ; /, end view ( x 700), p. 42. 



Fig. 6. — Hoplakilhara dendyi Kirkp.; a, oxea (y. 160); b, spherostyles (x 160); i', spines on head 

 of i ( X 700) ; b", end view of a spine ; c, c', c-, side, front, and bank views of a fimbriated 

 placochele, p. 44. 



