PLATE VIII. 



Figs. 1-5. Scalpellvm stroemii, Sars. 



Fig. 1. Larva in the Cypris-stage ; magnified 94 diameters. 



Fig. 2. Complemental male ; magnified 94 diameters, an., antennae. 



Fig. 3. Complemental male; magnified 94 diameters, t., testis; is., receptaculum 



seminis; o., genital aperture (?). 

 Fig. 4. Scutum, interior view to show the place where the complemental male is 



attached; magnified 8 diameters, a., complemental male; m., cavity for 



the adductor muscle. 

 Fig. 5. Second maxilla; magnified 94 diameters. 



Figs. 6-8. Scalpettum intermedium, n. sp. 



Fig. G. Mandible ; magnified 94 diameters. 



Fig. 7. Maxilla; magnified 94 diameters. 



Fig. 8. Complemental male; magnified 94 diameters. 



Figs. 9, 1 0. Scalpettum rectirvi rostrum, u. sp. 



Fig. 9. Maxilla: magnified 94 diameters. 



Fig. 10. Caudal appendages; magnified 41 diameters. '•«., caudal appendages; c, 

 sixth cirrus; p., penis. 



Fig. 11. Scalpettum compressum, n. sp. 



Fig. 11. Complemental male; magnified 41 diameters, an., antenna?; /., testis; vs. 

 receptaculum seminis; r.e., vas defernes; o., genital aperture; .r., organ of 

 unknown function. 



Fig 12. Scalpettum acutum, n. sp. 



Fig. 12. Mouth and first pair of cirri; magnified 41 diameters. /., lahrum; pa., palpi; 

 ■tin., second maxilla; c l , first cirrus; ? opening of the oviduct; oe., 

 cesophagus; gs., ganglion supracesophageale ; r/ 1 and <p, first and second 

 thoracic ganglia; ,r., so-called auditory sac. 



