y. With "Mnmhft 1 . without ijoaral picnic*. Salivary glands tnbc-thaped. 

 Index C 



Pnnuomnua ftryomfMa Kow.a. Mar. (5, p. 75.) 



Mediterranean. 

 /VMMMMNM tltudtrata Row. a. Mar. (6, p. 59.) 



Mediterranean. 



It. Itadnla biaerial Salivary glandt tnbi-hapl and opening oat separately. With 

 abdominal ipicnle*. RecepUcola eniinu num. T..IM. One dono-toriniiial 

 Index 18. 



Sjpimt*MHuutniit (TMM) (17, p. 255.) 

 N.W. coast of Australia. 60 fathoM. 



C. Kadula bi-|ctiniil. Salivary gland* consulting of more or IGM developed mvuinu- 



hitions of glandular oclb, opening out through *alivury ductn, which remain M-purated. 

 Abdominal spicnle* prvaent. RecvpUcula M-tuinu numerous The coclouioducta remain 

 wparated. Index 24. 



AnamntM Nientnv. 



Anammia ambtuutuu (Thiele) (15.) 

 Ambon. 



D. Badnla bi-pertinid (?). Salivary glanda lobod, conaiiting of aocnmnlations of 



glandular wlU, and opening ont through salivary dncta, which remain Kparatai. 

 Without abdominal and cioacal tpicnlea. Index 20. 



Amphiuifiiia Thiele. 



AmpMimtttia mapolitana Thk-lu (13, p. 244.) 



The same holds good for Rhttpalomenia. Up to now, of this genus five species 

 are known, viz., aglaopheniae Kow. a. Mar. ; euigi Thiele ; indica Nierstr. ; debili* 



tr. ; and scanden Heath. All these forms resemble the Proneomcniidae ; they 

 differ, however, in the absence of a radula. Traces of the latter are found in 

 the radula-sac. The structure of the salivary glands presents important points of 

 difference. R. aglaopheniae has two pairs of salivary glands, one pair vesicular and 

 the other lobate, just as they occur in Amphimenia. Undoubtedly, It. eisiyi in related 

 to aglaopheniae. R. indica shows numerous receptacula seminis ; cioacal spicules, 

 however, fail. True abdominal spicules are absent, though around the cioacal opening 

 spicules occur of special form. Moreover, there only occur two tube-shaped salivary 

 glands; relation with Proneomenia t/ntlensi* and Epimenia auttralis should, therefore, 

 not be excluded. Rhopahmenin </////, thoroughly known to UH, prolbly is closely 

 related to Rhopalomeiria indica. Our knowledge of the structure of the internal 

 organs of Rhopalomenia scamlrn*, with the exception of the nervous system, is 

 insuth' ient. It appears to me that these forms are connected with different genera 

 of the Proneomeuiidae, and, therefore, the genus Hhopalomenia may be a hetero- 

 geneous one. A division into smaller genera is for the present not to be recom- 

 mended ; in still stronger degree the same holds good for Chaet<l>rinn (7, p. 368). 



c 2 



