352 



The teeth of the inner series are prolonged on the vomer, 



ooo o where they form a single series of 



^ ooo o o somewhat smaller teeth, reaching 



: o behind the maxillary teeth. Mandi- 

 O o ' 



?o 



oo o c 

 00 O 



o0 



o 



bulary teeth anteriorly in 2, posteri- 

 | o orly in one series, the inner ones the 



| o longest. Nearly uniform brown, den- 



*? | / sely marbled with darker. Length 



205 mm. [Specimen of BLEEKER'S 

 collection of 120 mm. length seen in 



Fig. 1 7* Dentition of Echidna the Leiden Museum ; the above des- 

 amblyodon (Blkr.) a intermaxil- cription ') of the dentition is made 



lary, ;;/ maxillary, md mandibu- after this specimen]. 



lary, v vomerine teeth. X 7- Habitat: Bawean Island ; Celebes 

 (Menado); Ambon; Batjan; Buru; Timor. Marquesas Islands 

 [Scale]; Samoa [British Museum]. 



2. Rhino muraena Garman. 



(CARMAN, Bull. Essex Inst. (1888) 1889, p. 114). 



Very slender and elongate, somewhat compressed. Head 

 compressed; the pointed snout at its apex with a barbel-like 

 filamentous appendage and 3 similar ones on the symphysis 

 of the lower jaw. Eye small, covered by skin. Anterior nostrils 

 produced into tubes ending with a foliaceous appendage, the 

 margin of which is slit; posterior nostrils a rounded opening 

 shortly before eye in the level of its upper border. Cleft of 

 mouth reaching far behind eye, closing completely. Pectorals 

 absent. Dorsal, anal and caudal confluent, well developed, 

 covered by thin skin only. Origin of dorsal on top of head 

 far before gillopenings. Tail extremely elongate, more than 

 twice longer than head and body. All teeth uniserial, conical, 

 pointed. The series of maxillary teeth is continued on the 

 intermaxillary plate, which carries besides mesially 3 depres- 

 sible and somewhat longer teeth. Gillopenings larger than eye, 

 situated in lower half of height, forming a kind of a tube. 



Distribution: Only 2 species are known, Rh. quaesita 



i) This description is not in accordance with that of BLEEKER, who says, 

 that in the maxillary the teeth are in 3 series and on the vomer anteriorly 

 in 2 and posteriorly in one series. His figure gives clear representation of this 

 statement. 



