43 



Habitat: Sumatra (Benkulen, according to E. VON 

 MARTENS). - - Ceylon. 



We have placed this species under the doubtful ones, as 

 we doubt, that E. VON MARTENS (Preuss. Expedition nach 

 Ost-Asien, Zoolog. Theil, I. 1876, p. 404) was right in his 

 determination of the species (of which he gives no description) 

 of Nemachilus, caught by him in Benkulen, Sumatra, a species 

 only known from Ceylon. 



Note: 



BLEEKER described (Nat. Tijdschr. Ned. Ind. II. 1851, 

 p. 435) a Cobitis barbatuloides. In his diagnosis he says: 

 "spinis suborbitalibus utroque latere 2, sub oculi margine anter- 

 iore vel vix ante oculum sitis, spina posteriore anteriore majore; 

 cirris 6 ? brevibus . . . ." Later on in a review of the Cobitinae 

 (Nat. Tijdschr. Ned. Ind. XVI. 1858 59, p. 302) he gives 

 the following diagnosis of his genus Cobitichthys-. "Oculi velati. 

 Cirri 6 ad 10, rostrales 2, supramaxillares 4. Caput alepi- 

 dotum. Spina suborbitalis nulla. Nares anteriores tubulatae. 

 Pinna dorsalis ventralibus opposita. Vesica natatoria parva 

 tota in cavitate ossea vertebrali inclusa. Corpus valde com- 

 pressum. Spec, archip. Cobitis barbatuloides Blkr." This chang- 

 ement of his opinion about the suborbital spine is explained 

 in: Ichth. Arch. Prodom. II Cyprini, 1860, p. 82. In his Atl. 

 ichth. III. 1863, p. 14 the species in question is called Mis- 

 gurnus barbatuloides Blkr. As also the number of barbels is 

 uncertain and BLEEKER himself says : "1'espece merite d'etre 

 examine de nouveau," we only draw attention to it, but dare 

 not to give a description. 



3. Fam. CYPRINIDAE. 



Head and body compressed, exceptionally depressed. Pect- 

 orals and ventrals only in few cases horizontally inserted, only 

 one of their outer rays simple. No spine before or below eye. 

 Eyes with a free orbital margin, which may form a gelatinous 

 eyelid. Dorsal short or long, its origin before, above or behind 

 that of ventrals; anal short or long, its origin below dorsal 

 or behind it. Mouth inferior or terminal, its upper border 

 formed by the intermaxillaries only. Never more than two 

 pairs of barbels: a rostral and a maxillary pair, one or both 

 may be absent. Arrangement of lips and jaws and their covering 



