64 ZOOLOGY OF THE VOYAGE OE H.M.S. SAMAKANG. 



This large and handsome species is remarkable for the dilated and fringed anterior 

 tentacles, and for the peculiar notched and infiexed character of the posterior tentacles. It 

 was found crawling among the Fuci, in small pools left by the receding tide, on the flat coral 

 shores of Ty-pin-san, one of the Meiacoshima group. 



3. Aplysia ocolieeka. PL XVII. Eig. 3. Aplys. sordide viridi, ocellis pupillo lutescente, iride 

 fusca, punctis lutesceiitibus albisque in nubeculis dispositis ornata. 



Hab. Mauritius. 



The beautiful eye-like spots render the appearance of this species very elegant ; the 

 posterior tentacles are subulate and acutely pointed. 



The Aplysia punctata of Philippi is marked with congregated dots in the same 

 manner, but it wants the ocelli ; the Aplysia Argus of Riippell has the body covered with 

 numerous ocelli, without the clusters of dots. 



4. Aplysia nodifeba. PI. XVIII. Eig. 7. Aplys. sordide olivacea, tuberculis elevatis compluribus 

 subdistantibus obtecta, maculis pallide violaceis sparsis picta, pede maculis fuscis ornata, margine serie 

 macularum albarurn circumdata. 



Hab. Mauritius. 



The row of white spots round the margin and numerous pale violet spots on the sides 

 are striking characters of this species. 



55. SIPHONOTUS, n. g. 



Corpus elongatum. Branchiae pallio testaque tectse. Pes lateribus in lobos natantes 

 dilatatis. Orificium respiratorium in siphonem prolongatum. Testa submembranacea. 



Body elongated. Gills covered by the mantle and shell. Toot with the sides dilated into 

 swimming lobes. Respiratory orifice prolonged into a siphon. Shell nearly membranaceous. 



1. Siphonotus geographicxjs. PI. XVIII. Eig. 1. Siphon, albo-fusco, punctis multis nigris et 

 maculis magnis reticularis viridibus albo-marginatis, superficie inferiore pedis vivide flava, palhi siphone 

 longo, cylindrico, pyramidato. 



Hab. Java Sea, among masses of floating Fuci. 



Whitish-brown, covered with minute dark specks, and large, irregular, green, reticu- 

 lated patches, margined with opake white ; under surface of foot of a bright yellow, left 

 side of foot with a projecting lobe which overlaps that of the opposite side ; siphon of the 

 mantle prolonged into a tapering, subcylindrical tube. 



This form of Aplysiadce belongs to a group indicated, but not named, by M. Rang, in 

 which the margin of the mantle is posteriorly produced into a more or less elongated siphonal 

 tube, instead of forming a simple aperture as in other species. 



