1^6 Mr. H. Druce on some new TTetsrocera. 



that Sir James Hector says about it being " this genus is only 

 i-epresented in the collection by a single vertebral centrum." 



Ichthyosaurus indicus^ Lyd.*, seems to be an allied species 

 to /. australis, and also vied with 7. campylodon in size. It 

 is from the Ootatoor Group, the homotaxial equivalent of the 

 Chalk Marl and Upper Greensand of England. 



McCoy's original specimens were from Walker's Table 

 Mountain on the Flinders River. The present vertebra is, as 

 before said, from Marathon on the same stream. Both are 

 localities in the lioUing Downs Formation, or Lower 

 Cretaceous. 



XXIV. — Description of some new Species of Heterocera. 

 By Herbert Druce, F.L.S. &c. 



Fam. SyntomidsB. 

 Syntomis ccerulescens, sp. n. 



Female. — Primaries black, with six hyaline white spots — • 

 the first close to the base, the second at the end of the cell, 

 the third below the second slightly nearer the base, the other 

 three spots forming a band nearer the apex, the middle spot 

 being the smallest : secondaries black, with two hyaline white 

 spots, the first close to the base and extending to the inner 

 margin, the second smaller and nearer tlie apex. The fringe 

 of the primaries black, with a small white patch at the apex 

 and near the anal angle. Antennae black, with the tips 

 white; tlie head, thorax, and abdomen bluish black; the 

 front of the head white ; the tegulai black, with a small white 

 dot at the base ; abdomen banded with white at the base ; the 

 legs bluish black. 



Ex])anse 1^ inch. 



IJab. East Africa, Delagoa Bay {Monteiro^ Mus. Druce). 



Two specimens. 



Syntomis hrithyris, sp. n. 



Female. — Primaries smoky black, with two liyaline spots 

 along the costal margin, the first at the end of the cell, the 

 second beyond near the apex, below which is a large pale 

 yellow spot ; a small hyaline streak near the base, on the 

 lower side of which is a rather wide curved yellow band that 

 extends from the base almost to the anal angle : secondaries 



* Tal. Indica (4) i. 3, 1870, p. 27. 



