26 
Lernaeopoda scyllieola n. sp. 
pinkish-yellow colour. From its anterior end it gives off a readily discernible 
optic nerve to the eye. From the optic nerve, which is no doubt a compound 
trunk, branches pass to the antennules, antennae, and possibly to the upper 
lip. 
The inf ra-oesophageal ganglion is large, double the size of the other ganglion, 
and irregularly shaped. The lower lip and the mandibles are probably inner¬ 
vated from this ganglion, but I have not traced the branches. From the 
anterior end of the ganglion a pair of nerves arises to supply the 1st maxillae ; 
Fig. 11 
Fig. 10. Lernaeopoda scyllieola, an enlarged view of the genital process ( G.Pr .) in lateral aspect. 
a.s. anterior spines; p. protuberance; p.s. posterior spines; a. apertures; G.Pl. genital plate. 
Fig. 11. Lernaeopoda scyllieola, the alimentary canal and nervous system. M. mouth; Oe. oeso¬ 
phagus; St. stomach; I?it. intestine; T. testis; E. eye; S.G. supra-oesophageal ganglion; 
I.G. infra-oesophageal ganglion, a commissure connecting it with the foregoing ganglion; 
a. antennular and antennal nerves; 0. optic nerve; 1 Mx. nerve to first maxilla; 2 Mx. nerve 
to second maxilla; M.P. nerves to mediative process; Mp. nerve to maxillipede; N.T. nerves 
to testis; A.N. nerves to abdominal appendages; N.C. main nerve cord. (From a preparation 
treated with osmic acid 1 per cent.) 
immediately behind these a pair to the 2nd maxillae. From the postero- 
ventral surface a pair arises which enters the mediative processes and branches 
freely within them. From the posterior end springs a main nerve cord which 
gives off branches to the maxillipedes; these branches (according to other 
authors) may, however, really arise directly from the ganglion and run 
coincidentlv for some distance with the main cord (cf. the origin of the lateral 
line branch of the 10th nerve in Scyllium). The main nerve cord gives off 
minute branches to the stomach, and a well-marked nerve which bifurcates 
to the testes. It is continued to the end of the body into the abdominal 
