68 



nued as a spiny rim. Both opposite rims converge and unite 

 into a spiny patch on the posterior half of the snout. Inter- 

 orbital space concave '), smaller than eye. Lower half of oper- 

 culum with distally radiating short spiny lines. Superior limit 

 of operculum with a sharp oblique crest from orbita to branchial 

 opening. Occiput elevated into a broad blunt tubercle. Eye 

 9 to 9.7 times in head, somewhat more than twice in post- 

 orbital part. Trunk pentagonal with a flat dorsal surface, much 

 shorter than tail; ventrally strongly convex in the last 2 / 3 of 

 its length, less so dorsally; its greatest height about 19 times 

 in the total length and somewhat more or less than length 

 of head without snout. Superior cristae of trunk ending below 

 end of dorsal; median cristae of trunk strongly developed and 

 continued in superior cristae of tail. Scutella more or less oval 

 with irregular transverse or radial blunt tubercles, which are 

 transversally arranged on the scuta. In the younger specimen 

 the scutella have about 5 irregular cristae diverging from the 

 centre, and the scuta are more spinous; in those on the tail 

 the edges are finely spinous, with the central spine the highest. 

 Dorsal fin longer than snout; pectorals equal to eye. About 

 7 to 8 rounded blackish patches at least as broad as a ring; 

 4 to 6 on trunk, the first on about the 4th O r 5th r j n g ; one 

 on root of tail, one or two smaller ones behind it. Length 

 of the 2 described specimens (in the Museum of Amsterdam 

 and Buitenzorg, Java) 259 and 386 mm.; length of the dried 

 specimen in the British Museum about 475 mm. 



Habitat: Strait Madura! (lieutenant Vinkleg.); Houtmans 

 Abrolhos! (British Museum). 



10. Corythoichthys Kaup (p. p.)- 



{Corythoichthys Kaup, Cat. Lophobr. Fish, 1856, p. 25). 



Corythroichthys Jordan & Snyder*), Proc. U.S. Nat. Mus. Wash. XXIV. 1901, 

 p. 7 (nee. Kaup). 



1) We find it concave also in the type-specimen in the British Museum. 



2) It seems that JORDAN & SNYDER have introduced in 1901 the name Cory 

 throichthys (from xopvpot; crown, a word about which GtJNTHER already remarked, 

 that it does not exist in the greek language, and /#/$ fish) in which they were 

 followed by different writers who added "Kaup" as author, or they used the 

 name as DUNCKER -did as a synonym of Corythoichthys Kaup. Besides 

 that this proceeding is against every rule of priority, there was no reason why 



