434 GEOGRAPHICAL ZOOLOGY. [part iv. 



rivers of India and the Malay Islands ; AcJiarnes the rivers of 

 British Guiana. 



Family 34.--P0LYCENTRID^.. (2 Genera, 3 Species.) 



"Fresh- water carnivorous fishes, Avith compressed elevated 

 scaly bodies, and many-spined dorsal and anal fins." 



Distribution. — Eivers of Tropical America. 



Family 35.— LABYRINTHICI. (9 Genera, 25 Species.) 



"Fresh- water fishes, mth compressed oblong bodies, and 

 capable of living for some time out of water or in dried mud." 



Distribution. — Freshwaters of South Africa and the East 

 Indies from the Mauritius to China, the Philippines, Celebes, 

 and Amboyna. 



Family 36.— LUCIOCEPHALID^. (1 Genus, 1 Species.) 



" Fresh- water fish, with elongate scaled body, and a dilated 

 branchial membrane." 



Distribution. — Eivers of Borneo, Biliton, and Banca. 



Family 37.— ATHERINID^. (3 Genera, 39 Species.) 



" Marine or fresh-water carnivorous fishes, with subcylind- 

 rical scaled bodies, and feeble dentition. " 



Distribution. — All temperate and tropical seas, from Scotland 

 and New York to the Straits of IMagellan and Tasmania. 



Aiherina 2Jn'sJ)i/tc7' occurs in British seas. Species of Athenna 

 and AtJierinichthis are found in fresh- water lakes and rivers in 

 Europe, America, and Australia. 



