THE APODOUS HOLOTHUEIANS 189 



Anlantic Littoral Region: East American Littoral Region: 



Caudina (3). Caudina (1). 



Molpadia (3). Mediterranean Suhregion: 



Molpadia (1). 

 ^Yest American Subregion: 

 Molpadia (2). ? 

 Guinea Suhregion : 



Molpadia (1). ? 



We know too little of the range of the great majority of the species to make 

 profitable or worth while any attempt at a study of their distribution. It might 

 be added, however, that the MolpadiidiB afford no support to the so-called 

 "theory of bipolarity," for the southern species of Molpadia and Caudina are 

 perfectly distinct from the northern forms, and there is no representative of 

 Eupyrgus or of Ceraplectana in southern seas. 



