476 Leuckart: Bericht üb. d. wissenschaftlichen Leistungen 



Amage pusilla, Nicomache dispar, Maldane elongata, Rho- 

 dine attenuata, Clymenella (n. gen.) torquata, Notomastus 

 luridus, N. filiformis, Nicolea simplex, Lepraea rubra, Po- 

 lycirrus exiniius, Scionopsis (n. gen.) palniata, Chaeto- 

 branchus (n. gen.) sanguineus, Sabella microphthalma, 

 Euchone elegans, Fabricia Leidyi, Sabellaria vulgaris, Pro- 

 tula dianthus, Spirorbis borealis, Sp. lucidus. 



Später wird diesen neuen Arten von Verrill weiter 

 noch hinzugefügt: Lumbriconereis acuta, Eusyllis lucifera, 

 Syllis pallida (Am. journ. X p. 39), Stephanosyllis ornata, 

 Proceraea gracilis (ibid. T. VII. p. 132), Ophelia denticu- 

 lata (ibid. X. p. 39), Samythella (n. gen.) elongata (ibid. 

 T. V. p. 98), Nothria opalina (ibid. p. 102), Grymaea 

 spiralis und Enipo gracilis (ibid. VII. p. 407). 



Zur Charakteristik der neuen Genera folgen hier deren 

 Diagnosen : 



Nectonereis n. gen. e fam. Nereid. Head prominent, de- 

 pressed, oval, rounded in front, with two pairs of large eyes and 

 one pair of small antennae; palpi rudimentary. Tentacular cirri 

 four on each side. Proboscis small, furnished with a pair of ter- 

 minal hooks, with two anterior Clusters of denticles on the upper 

 side, and five small Clusters below in a ring extending nearly half 

 way around it. Anterior part of body fusiform, consisting of about 

 14 segments, the feet of which are divided into small rounded lobes 

 with small ventral and long dorsal cirri, those of the first seven 

 segments swollen and gibbous toward the end, with a small acute 

 terminal portion. Posterior part of body composed of numerous 

 short segments, the feet of which are furnished with lamelliform 

 appendages. (Offenbar eine Heteronereisform.) 



Samytella n. gen. e fam. Amphict. Body elongated, com- 

 posed of about 50 segments, 15 of which bear fascicles of setae, 

 and posteriorly about 35 bear uncini only, but have a small conical 

 papilla above the uncinigerous lobe, as in Melinna; the uncini com- 

 mence on the 4. setigerous ring. Branchiae 6, placed side by side 

 in a continnous transverse row. Cephalic lobe oblique, somewhat 

 shield-shaped, with a narrowed prominent front; buccal lobe shorter. 

 Tentacles numerous, smooth and slender. 



Clymenella n. gen. e fam. Maldan. Body elongated, com- 

 posed of 22 segments, exclusive of the cephalic and anal; all, ex- 

 clusive of the buccal and 3. ante-anal, setigerous with fascicles of 

 slender setae above and series of hooks below. Anterior margin of 

 the 4. setigerous segments prolonged into a thin membranous collar. 



