THE GENERA OF NEMERTEANS. 225 



Genus Drepanopkorus Hubrecht. Proboscis provided with 

 a crooked plate upon which a series of small stylets is 

 attached. Numerous lateral vesicles with accessory stylets 

 in the surrounding tissue. Tlie cavity of the proboscidian 

 sheath communicates with a series of membranaceous sacs 

 regularly placed to the right and left, which serve as tem- 

 porary reservoirs for the proboscidian fluid. Numerous eyes. 



34. Drepanopkorus ruhrostriatus Hubrecht. 

 Synon. Cerebratulus spectabilis Quatrefages. 



Amphiporus » Mac Intosh (pro. p.). 



(nee. Borlasia splendida Keferstein!) 

 Drepanophorus spectabilis Barrois. 



A-lthough Quatrefages' specific name has the priority over 

 mine for this species I must persist in using the name of 

 ruhrostriatus after the confusion which has been created by 

 Mac Intosh in his later publications (On Amphiporus spec- 

 tabilis , Quart. Journ. for Micr. Sc. n*'. LIX) with regard to 

 the original specific designation. In his monograph he 

 applies Quatrefages' name of C. spectabilis to quite a diffe- 

 rent species of Amphiporus from the Atlantic, described 

 by Keferstein under the name of Borlasia splendida. This 

 identification is principally based upon the striking resem- 

 blance which the two species present in their system of 

 coloration. In the more recent paper mentioned above 

 he persists in this error, and after having examined a 

 specimen of the true spectabilis (sent to him by myself) 

 he moreover regards the anatomical results of his investi- 

 gation of this latter specimen as applying to the specimens 

 he formerly examined (of A. splendidus Keferstein !) 

 in this way confounding specimens , species and even 

 genera! Barrois has clearly shown this in his » Embryologie 

 des Nemertes" (p. 137j. In order to avoid further confusion 

 the specific name of spectabilis will have to be dropped , 

 the atl antic species must henceforth be called Amphiporus 



Notes trom tlie Leyclen. Museum.. 



15 



