PLATE X 



Fig. la — id. Poecilasma dubium n. sp. Four specimens witli abnormal capitulum; magnified 10,5 diameters. 



Fig. 2 — 5. Poecilasma fissnin Darwin. 



Fig. 2. Maxilla; magnified 78 diameters. 



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



254 diameters. 

 Fig. 3. Second maxilla ; magnified 78 diameters. 



Fig. 4. Spines at the extremity of the S'h segment of the 6tli cirrus; magnified 254 diameters. 

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



Fig. 6 — 7. Poecilasma ebunicum Hinds. 



Fig. 6. Second maxilla; magnified 78 diameters. 



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



Fig. 8 — 16. Microlepas diademae n. sp. 



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

 Mandible ; magnified 72 diameters. 

 Maxilla; magnified 72 diameters. 

 Second maxilla; magnified 72 diameters. 

 Cirrus of the first pair ; magnified 50 diameters. 

 Cirrus of the second pair; magnified 50 diameters. 

 Cirrus of the third pair ; magnified 50 diameters. 

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

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



