- ^■^.■,-i^^^ .i-r^-^H^-^- "■ - -^■' ,j^ 



'im'"'^ ^" ^^^-mrr-rT^r^'^ii 



ii^j^ 



Fig. 1. 



rig. 2. 



rig. 3. 



Pig. 4- 



Fig. 5. 



Fig. 



Fi^ 



6. 



Fig. 7. 



Fig. 8. 



9. 



PLATE XVIII. 



Ojjhlacajitha 2)aiici^pi)ia Ltk. & Mrtsn. Ventral side. 



Dorsal side. 



!■ 



Fig. 10. 

 Fig. 11. 

 Fii^. ]2. 

 Fig. 13, a, h. 



if 



it 



t( 



(t 



fi 



(f 



CI 



a 



<i 



U 



£f 



ii 



ii 



a 



if 



u 



a 



u 



Arm-joints in side view. \, 



Spine of tlic disk. Scibert Obj. II. Or- 



hirta Ltk. & Mrtsn- Ventral side 



ii a 



!• 



ii 



n 



n 



(t 



Dorsal side, f . 

 Ann-spiucs. \. 

 Spine of the disk. Seibert Obj. II. Oc. 0. 



Bairdi Lym. Ventral side 



8 



1* 



(( 



(( 



It 



(I 



Dorsal side. \. 



Arm-joints in ventral view, sliowing the parallel ridges. ^'*-. 



Arm-spiiics. \. 



Spines of the disk. Seibert Obj. IT. Oc 0. 



