On an Amioid Fish from Brazil. 87 



Subfamily Htpeninji. 



Genus Arrade, Walker. 



Arrnde, Walker, xxvii. 82 (1863) ; Ilmpsn. Moths of India, iii. p. 99 



(1895). 

 Ziza, AValker, xxvii. 118. 

 Lophocraspedon, Ilmpsn. 111. Het. ix. p. 135 (1893). 



Arrade ostentalis. 

 Ziza ostentalis, Walker, xxvii. 119. 

 Goping, Perak [Kunstler). 



XVIII. — On an Amioid Fish (Megalurua Mawsoni, sp. n.) 

 from the Cretaceous of Bahia^ Brazil. Bj A. SmitH 

 Woodward, LL.D., F.R.S. 



[Plate II.] 



Another small collection of vertebrate fossils from the 

 Cretaceous Formation of Bahia, Brazil, latelj presented to 

 the British Museum by Joseph Mawson, Esq., F.G.S., 

 contains the greater part of the skeleton of an Amioid fish. 

 As no typical Amioids have hitherto been discovered in 

 South America, the new specimen is of considerable interest 

 and worthy of special notice. 



Tliis fossil comprises the greater part of the fish except the 

 head, and most of it is in counterpart. The actual bones are 

 preserved in the dark shaly matrix, and the specimen is asso- 

 ciated with part of a small example of Diplomystus longi- 

 costatus *. 



The best side of the fossil is shown of the natural size in 

 PI. II. A few vertebrje are evidently lacking anteriorly, but the 

 others are well preserved in almost undisturbed series, and about 

 sixty -five centra can be counted. These centra are much con- 

 stricted, smooth, and without lateral pits; all are deeper tiian 

 long, except in the upturned caudal extremity. The ribs and 

 neural arches in the abdominal region are very small and 

 slender. The neural arches in this region are not fused with 

 the centra, of which some are displaced and exhibit the facettes 

 for their support. The neural and hjemal arches in the caudal 



• A. Smith Woodward, " On Two Deep-bodied Species of the Clupeoid 

 Genus Diplomystus,'^ Ann. & Mag. Nat. ULjt. [G] vol. xv, (1895) p. 2, 

 pi, i. fig. 1. 



