396 Prof. Grube on the Annelid Family Maldaniea. 



or also the number of the setigerous segments, in the esta- 

 blishment of new genera. To the author it appears to be 

 advisable for the present to regard Malmgren's genera as mere 

 subsections. 



The genus Clymene would then include the following spe- 

 cies : — 



With 16 setigerous segments : CI. zostericola^ Quatref. 



„ 17 setigerous segments : Axiothea catenata^ Malmgr. 



(which possesses 4 anteanal segments), C. modesta^ 



Quatref., and Gl. lyrocephala^ Schm. 

 „ 18 setigerous segments, according to Quatref ages : CI. 



uranthus^ Sav. (Savigny ascribes to it 19 segments 



and 4 anteanal segments.) 

 „ 19 setigerous segments; with 5 anteanal segments: 



{Praxilla)j P. prcetermissa^ Malmgr., P. arctica^ 



Malmgr., P. Kefersteiniiy Kinb., CI. gracilis j Sars, 



and CI. Mueller iy Sars ; 

 with 3 anteanal segments : Cl.lumbricoideSjM.-l^d.w. 



(Quatrefages indicates only 15-16), and CI. dia- 



demttj Gr., n. sp. ; 

 with 2 anteanal segments : CI. digitata^ Gr., and 



CI. (Erstediy Clap. 

 „ 22 setigerous segments and 2 anteanal segments : CI. 



palermitanaj Gr. 

 „ 23 setigerous segments (?) and 3 anteanal segments : 



CI. amjpihistoma^ Sav. 



Clymene diadema, Gr., discovered by Ritter von Frauenfeld 

 in the E-ed Sea, like CI. lumhricoidesj which occurs not un- 

 commonly at St. Vaast, presents longer and shorter teeth on 

 the funnel; but these alternate almost regularly, one of the longer 

 ones standing between every two or three very short ones ; 

 the median strip passes through the vertical plate not, as in 

 CI. lumhricoidesy as far as the middle, but nearly to the hinder 

 margin, and does not project as a lobe at the frontal margin. 



Clymene digitata^ Gr., and CI. (Erstedij Clap., are very 

 similar ; but the former, if the specimen examined was adult, 

 is only one-third of the length of the other, its segments are 

 much shorter and thicker to beyond the middle of the body, 

 and the circular vertical plate has a distinct and entire margin; 

 whilst in CI. CErstedi this is rather rounded pentagonal, and 

 not distinctly marked, and has an emargination on each side 

 behind. 



From Clymene Quatrefages separates the genus Ze/oce^Aa?M5, 

 which, otherwise agreeing with it, is almost or entirely desti- 

 tute of a vertical plate. If we omit this last character, retain 



