EXPLANATION OF PLATE XXXVIII. 



Lepidonotus hedleyi, sp. no v. 

 Fig. 1. — An elytron (x 8). a. the anterior margin, e. 



external margin. 

 Fig. 2. — A portion of its surface ( ^ ^50), showing the round 



pigment cells and empty cells ; these lie at a lower 



level than the tubercles, two of which are shown. 

 Fig. 3. — Four tubercles from an elytron of different shapes 



(X 250). 

 Fig. 4. — A parapodium (x 20), seen from the anterior face ; 



gl. Gland at the base of the dorsal cirrus. 

 Fig. 5. — A notopodial chaeta (x 500). The pectinated frills 



ill this and next figure are merely indicated by 



dotted lines. 

 Fig. G. — A neuropodial cha;ta ( a 250). 

 Fig. 7. — A neuropodial chaeta from another aspect ( A 250), 



Le pidonotus willeyi, sp. nov. 

 Fig. 8. — An elytron (x 20), showing the limitation of the 



fringe to the external margin; ant. the anterior 



border. 

 Fig. 0. — Portion of the external margin of an elytron ( x 250) 



showing some of the smaller tubercles. 

 Fig. 10. — Portion of the antero-dorsal area (x 250), ^\ith 



simple tubercles. 

 Fig. 11. — Some of the larger tubercles ( X 250). a. from the 



external area ; h. from near the middle ; c. one of 



the largest in the posterior area. 

 Fig. 12. — A parapodium (x 35). 

 Fig. 13. — A notopodial chaeta, with blunt aj^ex (x 500). 



The jjectinated frills where they cross the surface 



are omitted from this and the next. 

 Fig. 14. — One of the long notopodial chsetse, with a fila- 

 mentous apex (x 500). 

 Figs. 15 and 15a. — Two aspects of a neuropodial chaeta 



(X 360). 



Physalidonotus rugusus, sp. nov. 

 Fig. 16. — The prostomium (x 10), the hinder border of 



which is overlapped by the first " pad " or elytral 



supjjort. 

 Fig. 17. — An elytron (x2^), the characteristically elongated 



areola is indicated by dotted line. Ant., anterior 



margin. 

 Fig. 18. — A portion of the external area and margin of an 



elytron (x 20). 

 Fig. 11). — One of the supra-areolar tubercles (x 20). 

 Fig. 20. — A tubercle from the jwsterior area (x 35). 

 Fig. 21. — Another tubercle from the posterior area (.\ 35). 

 Fig. 22. — Base of a cirriferous parapodium from behind to 



show the branchial papuke (enlarged). 



