INNOCUOUS SERPENTS. 159 



are without them, or support species more or less dissimi- 

 lar, and in very small numbers. 



1. DiPSAs DENDROPHiLA. Of large size, attaining a 

 lengtli of 7 feet ; form very powerful ; head very thick ; 

 posterior teeth grooved ; a small accessory pulmonary 

 lobe ; 21 rows of scales, of which the dorsals are large. 

 S. 220 + 102. Body of a fine shining black, surrounded 

 with numerous bands of golden-yellow. Found in the 

 Islands of Java and Sumatra ; the specimens from Celebes 

 have the yellow bands closer, and the occiput ornamented 

 with several spots of the same colour. 



2. DiPSAS MULTiMACULATA. Habit of the preceding, 

 but the size much less ; teeth all of equal length ; colour 

 a grey-brown, or olive, varied with deep brown ; on the 

 sides 2 ranges of spots, the superior very wide ; summit 

 of the head marked by an angular line ; a dark streak be- 

 hind the eye ; below of a rose colour, marbled and spotted 

 with brown ; 17 rows of smooth scales. S. 207 + 84. 

 Inhabits Bengal, and is found also in Java and Celebes. 



3. DiPSAS TRiGONATA. From Bengal. Allied to the 

 last ; but the posterior maxillary tooth very long ; the 

 tail shorter ; colour of a yellow-olive, marked along the 

 back with irregular triangular spots of white, bordered 

 with black. S. 233 + 80. 



4. DiPSAS Cynodon. a beautiful serpent found in Java 

 and Sumatra, of large size, and of a very attenuated form ; 

 trunk extremely compressed ; 21 rows of scales ; the 

 dorsals large and hexagonal ; teetli largest at the anterior 

 extremity of the jaws ; eye very large ; colour of a greyish- 

 purj^le, finely marbled or speckled with brown, and re- 

 lieved with black, close-set bands ; several white spots 

 on tlie sides ; a black streak behind the eye. S. 

 260+140. 



5. DipsAs Drapiezi. Form a size nearly similar to 

 the last ; but the muzzle is much shorter, the trunk less 

 high, and the teeth of equal length throughout. The 

 frenal plate is usually wanting. S. 260 + 130. Below of 

 a rose-purple, bordered with black ; a series of red spots, 

 bordered with black, near the abdomen. Of an almost 

 uniform brown in the adult. Observed in Ceylon, Suma- 

 tra, Java, Celebes, and New Guinea. 



