30 Mr. C, T. Regan on the 



separate family or subfamily would merely obscure its 

 relationships *. 



Some of the more typical genera are grouped in the 

 following list: — Opsariichthys, Chela; Barilius, Bola, Aspi- 

 doparia, JJanio, JSematahramis, Basbora, Luciosoma, JSfurio, 

 Amhlyijharyiigodony Aspms, Scomhrocypris, Chanodichthys, 

 Pelecus, Culler ; llypophthalmichthys ; Leuciscus, Squalio- 

 harbuSj Xenocypris, (Jtenopharyngodon^ Chondrostoma, Ortho- 

 don, Canijyoatoma, JJybognatkus, Cochlognatkics, Ilybopsis, 

 Kxoglossum ; Albxirnus, Abramis j Semiplotus ; lihodeus, 

 Acanthorhodeus^ Achiloynathus; Cyprinus, Carassius, Barbus, 

 Cosmochilus, Leptobarbus, Rohteichlhys, Osteobrama, Varico- 

 rhinus, Gymnostomus, Psilorhynchus^ Scaphiodon, Thynn- 

 ichthys, Albulichthys, Labeo, Barbichthys, Dangila, Cirrhina, 

 Oateochilus, Catla, Crossochilus, Discognathus, Gyrinochilus, 

 Tinea, Aulopyge, Rhynchocypris, Pseudorasbora ; Lucio- 

 hrania ; Oreinus, tichizothoraXj Diptychus, Gymaocyprisj 

 Ptyc/ioba)-bus, Schizopygopsis ; Ileinibarbus, Acanthogobio, 

 Gobio, Pseudogobio, Leucogobio, RhinogobiOj Saurogobio. 



Family 3. Cobitidae. 



Prrcmaxillaries excluding maxillaries from gape ; three 

 pairs of barbels or more. Pharyngeal teeth uniserial, often 

 rather numerous, on the inner and posterior edges of sub- 

 triangular laminar expansions of the pharyngeal bones, whicii 

 are scarcely falciform ; pharyngeal processes of basiocci})ital 

 sometimes very small, sometimes larger and meeting below 

 the aorta, but never united and not supporting a horny pad. 

 Subtemporal fossce shallow; a lateral occipital foramen on 

 each side of the foramen magnum. Pra:orbital and sub- 

 orbitals unossitiid. Cleithra normally suspended from supra- 

 cleithra. Posterior part of air-bladder small or vestigial ; 

 anterior part enclosed in a bony capsule, produced outwards 

 on each side into au expansion with terminal oritice, connected 

 by a duct with the skin above the pectoral tin ; anterior wall 

 of lateral expansion of air-bladder capsule lormed by the 

 transverse j)rocess of the second vertebra. 



The numerous species of this family are chiefly inhabitants 

 of mountain streams in tropical and temperate Asia. Three 

 species are European and one is found in Abyssinia. 



♦ Since writing llio above I note that Mile. Popta (Notes Levdeu 

 Mus. xxvii. lOOt), p. 1--) h;is described iVom Borneo Paracrossocbilus 

 bicornis, a tisli in many ways nearer to Uyriiwchilus than either Crosso- 

 diilus or Di-icwjiiathus, the lips folding in a similar manner when the 

 mouth is shut. 



