1900.] 



POLYTfOID FROM NEW ZEALAND. 



985 



EXPLANATION OF THE PLATES. 



Plate LX. 



Fig. 1. Dorsal view of Lepidonotus giganteus (completed on the right side 

 only) (nat. size). 

 a, areola or area of attachment of elytron : coloured in life light buff. 

 e, dotted portions of elytron : coloured warm, or even dark, brown. 

 ch.. neuropodial chtetaa. seen here and there. 

 ex.ap., esbalant aperture of subelytral respiratory channel. 

 /, notopodial hairs forming a fringe along each side. 

 nt.c, notopodial cirrus. 

 Fig. 2. View of the ventral surface of the anterior seven segments. 

 I. First, or peristomial, parapodium. x2. 

 II. Second, or first elytriferous, parapodium. 



a.L, anterior lip. rn.t., median tentacle. 



Fig, 



b.cir., buccal cirrus. 



ch., neuropodial chtetas. 

 el., elytron. 

 /, notopodial hairs. 

 I.I., lateral lip. 

 l.t., lateral tentacle. 

 m., mouth. 



3. Dorsal view of another individual after removal of all the elytra : 

 showing the median respiratory channel and its lateral affluents. 

 X2. 



neph., nephridial papilla. 



nr., neuropodium. 

 nr.c, neuropodial cirrus. 

 lit., notopodium. 

 p., palp. 

 p.L, posterior lip. 



-XXVII. Segments numbered. 

 an., anus. 



d.t., dorsal tubercle. 

 el., elytrophore. 

 f.p.r., flattened parapodial ridge. 



nt.c, notopodial cirrus. 



tr.c, transverse respiratory channel. 



p.C, mid-dorsal respiratory channel. 



Plate LXI. 



Fig. 4. Enlarged view of the head of Lepidonotus giganteus, seen dorsally ' 

 after removal of elytra. X 4. 

 I. Peristomial parapodium, bearing the peristomial cirri (c l , c 2 ). 

 II. First elytriferous parapodium. 



b.t., base of prostomial tentacle. 

 c x , e 2 , ventral and dorsal peri- 

 stomial cirri, 

 c 3 , buccal cirrus, belonging to 

 segment II. 

 d.c., anterior end of the dorsal 



respiratory channel. 

 d.t v first dorsal tubercle, in re- 

 spiratory channel. 

 e, anterior eye. 

 Fig. 5. Left elytron of the first pair. X 2. 

 Fig. 6. The last elytron of the left side. X 2 

 Lettering of figs. 5, 6, 9, & 10 : — 

 A.P., antero-posterior direction. 

 L.B., transverse (left to right) 



direction. 

 a, areola. 

 c, darker pigmented region 



(dotted). 

 e, spine on the edge with conical 



base. 

 e v another type of the same, 

 less common. 



e 1 , posterior eye. 

 el., elytrophore. 



/, notopodial chretse of peristomial 

 parapodium. 

 l.t., lateral prostomial tentacle. 

 rn.t., median prostomial tentacle. 

 nr., neuropodium. 

 nt., notopodium. 

 p., palp. 



ed., prominent, upturned margin 



forming the edge of the es- 



halant aperture. 



h., hairs on the edge of the elytra. 



n., notch in the anterior border of 



the 1st elytron on the left side. 



p.s., pigment-spot in a spine. 



s., star-rooted spine, springing from 

 the surface of elytron. 

 st.b., base of ditto. 



v., vesicle in apex of spine. 



