ANNELIDA. 
.633 
pauUnay sp. n., Grube, 1. c. p. IG, Taf. 1. fig. 7, St. Paul ; N. (Neretlepas) 
stimpsonisj Grube^ figured Taf. 1. fig. 8; and N. (N.) Grube, 
figured Taf. 2. fig. 2. 
s Nereis zonata, sp. n., Malmgren, 1. c. p. 4G, tab. 6. fig. 34, Spitzbergen. 
Praxithea irroratay sp. n., Malmgren, 1. c. p. 60, tab. 4. fig. 24, Bahusia. 
Tyloi'rhyhchus chinensisy Grube, 1. c. p. 22, Taf. 2. figs. 3 a-S g. 
Heteronereis. Ehlers (/. c.), while he promises to treat somewhat in 
detail of the relations of this genus in the forthcoming second part of his 
^ Boratenwiirmer,’ takes the present opportunity of stating his conviction that 
the forms hitherto placed in the genus Jletei'onercis are but stages of sexual 
development of Nereis or NcreilepaSy and he would propose to rectify the 
synonymy as follows : — Nereis {Leontisy Mgrn.) dumerilii (And. & M.-Edw.) 
^Heteronereis {Iphinereis,lsl^m.') fucicola (QErst.) J Nereis pelagica (L.) 
= cf Heteronereis 7-enalis ( J ohnst.), grandifolia (E athke), 2 Heteronei’eis assi- 
milis (Q5rst.) j Nereis {Permereis, Kbg., LipepMUy Mgr.) cultrifera (Gr.) 
{margaritaceay M.-Edw)=Zi/cf)r/s lohulata (Eathke) ; Heteronereis {Hedyhy 
Mgrn.) lohulata (Johnston, Cat. Brit, non-parasitic Worms, p. Gl, non 
Quatrefages, Hist, des Annel^s, i. p. 6G1) ; Net'cis vexillosa {dv.) — Heterone- 
reis arcticay Grube, Middendorfs Eeise in den ausserst-Nord u. Ost Sibiriens, 
Bd. ii. Zool. i. p. middendorffii (Mgrn.). 
Syllidea. 
‘Syllidee. 
Syllis vaneauricay sp. n., Grube, 1. e, p. 26, Taf. 3. fig. 2, Vankauri. 
8yllis horealisy sp. n., Malmgren, 1. c. p. 42, tab. 6. fig. 42, Finmark ; S. fas- 
ciattty sp. n., Malmgren, 1. c. p. 43, tab. 7. fig. 47, and tab. 8. fig. 62, Spitz- 
bergen. 
Figures of the following are given by Malmgren (1. c.) : — Syllis armillaris 
(Miill.), tab. 7. fig. 4G ; S. cornntay H. Eathke, tab. 7. fig. 46. 
Axdolytus fallaXy sp. n., Malmgren, 1. c. p. 33, tab. G. fig. 41, Spitzbergen j 
A. incertusy sp. n., l^lalmgren, 1. c. p. 35, tab. G. fig. 40, Spitzbergen j A. new- 
toniy sp. n., Malmgren, 1. c, p. 36, Spitzbergen ; A. alexandri, sp. n., Malmgren, 
1. c. p. 37, tab. 7. fig. 39, Davis Straits. 
The genus Pterosyllis, limited as it has lately been by Claparede, falls into 
two distinct genera : — Gattiola, Johnston, with the species G. spcctabilis, G. 
Jinniarchicay and G. formosa (Clap.), Mgrn. ; Pterosyllis, in the strict sense, 
whose sole hitherto known representative will be P. dorsigeray Clap. These 
genera may be briefly characterized es follows : — 
Gattiola, Johnst. Setfe falcatae articulo terminali apice integro (hand bi- 
dentato). Oculi 4 dorsuales mediocres, utrinqiie bini approximati. Appendices 
duae nuchales. Cirri tentaculares utrinque bini. 
Ptex'osyllis (Clap.), s. str. Setae falcatae articulo terminali apice bidentato. 
Oculi 4, anteriores sat magni ventrales, posteriores minores dorsuales. Ap- 
pendices duao nuchales. Cirri tentaculares utrinque bini. (Malmgren, 1. c, 
p.38.) • 
Pionosyllisy g. n., Malmgren, 1. c. p. 39. Proboscis exserta solo dente 
valido conico armata, pone marginem papillis mollibus c. 10 coronata. Setae 
compositae siibfalcatae articulo terminali elongate linear! apice bidentato. 
Segmenta media et posteriora fasciculis setarum capillarium longissimarum 
deciduarum praedita, praeter setas falcatas. Cetera ut in genere Syllide, 
