GALEROPSIS. 211 



Aradas and Benoit state that this species, instead of being 

 found at great deptlis as G. bi'acteata, is littoral. 



It is usually known as Murex scalaris, Brocchi, but that 

 shell is a fossil and entirel}' distinct. 



P. Sophia, Aradas and Benoit. PI. 60, fig. 381. 



Very rare. Length, 1-5 inch. 



Palermo. 



Distinguished by its ventricose form, numerous ribs, cauda 

 and closed reliexed canal. Monterosato, Kobelt, etc., consider 

 this = Hindsia 7iivea^ Pfr., an exotic shell : they are probably 

 correct ; still I insert the species here. 



P. Spad^, Libassi. 



Described as a fossil, but recently found living. I do not know 

 the species. It has been referred to Tritonidea. 



MeMterranean. 



Sjiecien of GoraUiophila unidentified. 



0. MADREPORiNA, X. Ad. = Bhizochilus coralliophiJa.^ A. Ad. 

 {Philippines).! C. senticosa {Bombay)., C. confragosa {Hah. 

 unknown?)^ C. asperrima {Hah.'? resembles G. scalarifo7-mis , 

 Lam.), C. RETUSA {Hab. unknoion)., all of H. and A. Adams. 



C. RADULA {Ghina), C. pulchella (Philipipines), C suturalis 

 {PhiUppiyies), C. scala {Juan Fernandez)., C. fragilis {Philip- 

 pines), C. CLATHRATA {Philippines), all of A. Adams. 



None of these species are figured, and in a genus in which the 

 form and sculpture of the species are so variable, it is very unsafe 

 to endeavor to identify them by descriptions onl}'. Probably 

 most of these names, founded on ideas of the immutabilitj^ of 

 specific characters which no longer obtain credence, will become 

 synonyms. 



Subgenus Galeropsis, HupL-. 



I venture to place under this name the Bhizochilus madrepo- 

 rarum, Sowb., which possesses ditferential characters from both 

 Bhizochilus and GoraUiophila. The young shell is free, and not 

 unlike a GoraUiophila., and in this stage it has a small, thin oper- 

 culum with lateral nucleus. The animal has a short siphon which 



