152 Macreay MemortaAu VoLumMe. 
Fig. 21.—Cirrus and neighbouring paris of Craspedella Spenceri. 7., introvert of cirrus ; ¢.s., ejaculatory 
sac ; g.7., granule reservoir; g.d., right granule duct; v.s., vesicula seminalis. 
PLAtvE XIy. 
Fig. 1.—Longitudinal, nearly horizontal section of 7. /asciata (Flemming’s strong solution and alum- 
cochineal), ., epidermis and cuticle ; m., longitudinal layer of muscle ; between e., and m., the 
dark band represents the thickly pigmented layer: wr. r.. “prostate” glands : ¢.s.. posterior 
CORRIGENDUM. 
Since this paper passed through the press my attention has been directed 
by Prof. R. Blanchard, of Paris, to the fact that a genus Actinodactylus was 
established in 1890 by Duchassaing for a Tunicate. I, therefore, propose to alter 
the termination, making it Actinodactylella. I have omitted to give a specific 
name in the paper. and now propose to call this remarkable worm Actinodactylella 
Blanchardi.—W. A. H. 
IPLATE Xv. 
Fig. 1.—Semi-diagrammatie view of the organisation of Zemnocephala minor; the animal is represented 
as somewhat contracted ; the vitelline glands, the shell-glands and the nervous system are not 
represented. p/., pharynx ; in front of it the eyes, with a portion of the pigment-network ; 
i., intestine with its septa; ¢s., terminal sacs of excretory system; r.g., rhabdite-forming 
tentacular glands ; 7.d., ducts of the same where they become dilated ; ¢., testes ; v.s., vesicula 
seminalis ; ¢.s., ejaculatory sac; c., cirrus; g.c., genital cloaca; 7.v., receptaculum vitelli; 0., 
ovary ; wt., uterus ; pr., some of the prostate or granule-forming glands (only diagrammatically 
represented). 
Fig. 2.—Ventral view of 7. Jheringii, from a preserved specimen. m., mouth; g.a., genital aperture; v., 
vitelline glands ; the other letters as in fig, 1. 
Fig. 3.—Craspedella Spenceri, dorsal view ; letters as in preceding figures. 
