484 ADDENDA. 



the total length (without caudal) ; head broad, its length being a 

 little less than one-fourth of the total (without caudal) ; interorbital 

 space flattish ; snout short, obtuse, as long as the diameter of the 

 eye, which is two-sevenths of the length of the head, and situated 

 immediately below the upper profile of the head ; barbels of moderate 

 length, about as long as the eye. The origin of the dorsal fin is 

 behind that of the centrals, and somewhat nearer to the root of the 

 caudal than to the end of the snout. Caudal fin with a broad black 

 marginal band above and below. 



Borneo. 

 a. Six inches long. Sarawak. Presented by Dr. C. Collingwood. 



Page 132. Barbus douronensis. 



e. Half-grown. Sarawak. Presented by Dr. Collingwood. 



Page 140. 

 Barbus fasciolatus. Change this name into Barbus semifasciolatus. 



Page 176. 

 Add to the diagnosis of Ceratkhthys, " Barbels sometimes entirely 

 absent." 



Page 177. Add :— 



2«. Ceratichthys sallsei. 



D. 2/7. A. 2/6. L. lat. 54. L. transv. 8/9. 



The height of the body is contained thrice and two-thirds in the 

 total length (without caudal), the length of the head nearly four 

 times. Caudal peduncle not quite twice as long as deep. Barbels 

 none. Snout obtusely conical, longer than the eye, which is one- 

 fifth of the length of the head. Upper jaw slightly overlapping the 

 lower ; maxillary not extending to the vertical from the front margin 

 of the orbit. The origin of the dorsal fin is immediately behind that 

 of the ventrals, and nearer to the root of the caudal than to the end 

 of the srout. Fins short, caudal emarginate. There are five longi- 

 tudinal Leries of scales between the lateral line and ventral fin. 

 Brownish-green above, minutely dotted with black along the sides. 



Pharyngeal teeth 4—4, long, curved. Intestines with only a few 

 convolutions. 



Mexico. 



a-c. Adult, 3| inches long. Cuemavaca. From M. Boucard's 

 Collection. 



Although this species is devoid of barbels, I refer it to Cera- 

 iichthys, as in several other species the barbels are quite minute. 



Page 215. Leuciscus aula. 



Leuciscus lasclm (Costa) is synonymous either with this species or 

 with L. eryihrophthalmus (p. 232), 



