256 Polychaeta. — Limivora. 



Prionospio Mlmgr. , Clfde. Antctniac ba>ti contracta loho ccphalico mf 

 haaiii itisrrf((r, ((((Ittcae ; cirri tciitactdarcs nuRi ; hranchiac aliac(ji^J pecfinatae, aliae (2}' 

 siniptices in atifica corporis parfc tanfmninodo sifac ; pedum anfcriorum rami (listincti 

 loho memhranacco inariiinati. posfcrioruin ad insfar crisfac transvcrsae coaliti. 



m 1. Pr. Malmgreni Clpde. Corpus long. 11 — 12 mm aut ultra , lat. 

 0..5 mm, sepfmentis ultra 50, ]ialli(ium, lobo cephalico latissimo. oculis 4; branchiae 

 aliae pennatae , aliae simplices usque ad paria 9 ; hamorum rostrum superne- 

 bidentatum. 



Hal)it. : ^larseille (Makiux et Bouketzky); Napoli (CLAPARiiDE). 



Periptyches Gb. Branchiarum, paria diio in segmentis 4. et 5., pimiidit> 

 conferfis (alia iti scgm. 2. fj; setae fantuin capiUares (in scgmenfis anteriorihus 33' 

 servafis) ; ocidi '2 ohtotiiji; corpus anfice ddcdatmn. 



m 1. P. festiva Gr. Species unica. 



Habit. : Adria (Stossich). 



Paraonis Ctr. Branchiae a segm. 4. uscjiie ad 10., margine integro; pinnarum- 

 anferiormn raini siipcriores lahio posteriorc dongafo, infcriorcs lahio hrevi lato, iit 

 ufroquc setae capiHares; pintiae rclicjuae supra scfis capiUarihus, iiifra setis pauci- 

 oribus crassioriliiis aciridarihiis. siiic lahiis. 



m 1. P. tenera Gr. Corpus tenerrimum; lobus cephalicus semiorbicularis. 

 oculis 2 punctiformibus, caruncula segm. 2. attingente. 



Habit. : Adria (Stossich). 



Nerine (Johnst.) Sars. Spioni similliina; lahio memhranacco rami supcrioris: 

 pedttm hrdiKliils aduafo frrc uscpw ad e.xtrciiiifafcm, ccrfc iii segincnfis anfcriorihus. 



in 1. N. cirratulus Clpde. {Lumhritus cirratidus BCh., Cirrafidus LamarcKii 

 DCh.). Corpus long. 40 — 60, lat. 2,5 mm, depressum, lobo cephalico conico- 

 acuminato ; hami ramorum ventralium apice valde recurvo ; sanguis roseo-ruber. 



Habit. : Napoli (CLAPARfiDE). 



in 2. N. Sarsiana Clpde. Corpus long. . ., lat. 6 mm, lobo cephalico 

 conico obtuso; laiiuuum vcntralium hami vix recurvi; sanguis ruberrimus. 



Habit.: Naiioli (ClaparSde). 



.3. N. vulgaris Johnst. Corpus long. 3 — 4 poll. , Havo-fuscum ; anguli. 

 lobi cephalici in processus breves contractiles producti, margo anticns lobi cephalici 

 concavo-lunatus ; labium membranaceum branchiarum apicem non attingens. 



Distrib. : ^lare HritanuicunL 



Haldt.: Adria : Tricste, Fiume (Gkiue). 



in ?4. N. auriseta Clpde. Corpus long. . ., lat. 5 — (> mm. depressum,. 

 lobo cephalico conico, valde obtuso, apice tumido; labium membranaceum bran- 

 chiarum apicem superans; hami ventrales bifidi : setarum Habolla aurata, nitentia. 



H a b i t. : Napoli (CLAPAKfcDE). 



Polydora Bosc (Lcucodorc Jdhnst. , Ljcucodorum Oekst.). Brgio anfica 

 coiporis pdHcis srgnicnfis coiiqiosita, (piorum 5. aut U. ab aliis discrcpaf: jicdcs biranes,. 

 rc.gionis anficae iit utroque ramo setis, regionis posticac in ramo supcriorc setis, in 

 infcriorc nncinis instructi; mutafio sefarmn in scgincnfo 7. auf 8.; hraiirhiac cirri- 

 formcs in raiiio siipcriorc. 



m 1. P. Agassizii Clpde. Corpus long. cii-c. 20 mm, depressum ; lobus 

 cephalicus margint' frontali valde emarginato, angulis externis ad instar antennaruni 

 productis ; segmentum 5. setis aliis validissimis aliis tenuioiibus ; mutatio setarum 

 in segmento 7.; branchiao numerosissiuuie ; hami ubique similes. 



Habit.: Marseille (Marion et Bohretzky); Napoli (CLAPARftDE), frequens.. 



111 2. P. hoplura Cli-de. Corpus long. :>:"), lat. 1,7 mm, s<'gm(!Utis 132;. 



