PLATE X 



i |„ — |,/. Poecilasma dubium n. sp. Four specimens with abnormal capitulum; magnified 10,5 diameters. 



;. Poecilasma fissum Darwin. 



Fig. 2. Maxilla; magnified 78 diametei 



2a. Clawlike spines at thé upper angle of the maxilla, notch with the minute hairs; magnified 

 254 diameters. 



3. Second maxilla. magnified 78 diameters. 

 Fig. 4. Spines at the extremity <>f the 8* segment of the && cirrus; magnified 254 diameters. 

 Fig. 5. Pedicel of 6»> cirrus, root of penis and caudal appendage; magnified 78 diameters. 



6—7. Poecilasma eburneum Hinds. 



1 ig. 6. Second maxilla; magnified 78 diameters. 



Fig. 7. Spines at the extremity of the 8* segment of the 6* cirrus; magnified 180 diameters. 



I . 8 — 16. MicroUpas diademae n. sp. 



Fig. 8. Capitulum attached to a spine of Diadema saxatile L. ; magnified 3,6 diameters. 



M.unlilile; magnified J2 diameters. 

 . [o. Maxilla; magnified 72 diameters. 

 I f. 11. Second maxilla; magnified 72 diameters. 

 Fig. 12. Cirrus of the first pair; magnified 50 diameters. 

 I . 13. < mus of the second pair; magnified 50 diameters. 

 14. Cirrus of the third pair; magnified 50 diameters. 

 [5. Cirri of the sixth pair and penis; magnified 50 diameters. 

 Fig. 16. Two eggs with the nauplius-larvae developed; magnified 234 diameters. 



