DK. GUNTHEE OX THE FISHES OF CENTEAL AMEEICA. 403 



Xiphoi)horns \\\t\\ one, Mollimesia with one, Pa-cilia with eight, and Belonesox with 

 one species. 



The affinity of this freshwater fauna with that of Mexico, will be found to be greater 

 than with that of any other country (I might mention about ten species common to 

 Guatemala and Mexico) ; but until we are better acquainted with the habitats of species 

 described as Mexican, a more detailed comparison of the two countries would be of but 

 little advantage. The freshwater fish-founa of Central America may be shortly thus 

 characterized:—^ part of the Chromides (Heros, &c.) and the Gijimnodontes (jenerally 

 have attained to their greatest development; neotropical types extending northxcards 

 prevail over nearctic extending southwards, the latter heing represented by a few extreme 

 branches. 



§ 8. An Attempt to Subdivide this Fauna info Provinces. 

 We may subdivide this part of the freshwater fauna into the following provinces : — 

 A. Hie fresh waters north of the Lakes of Managua and Nigaragua, emptying info the 

 Pacific. — To this province belong the fishes collected at Chiapam [C'h.], Huamuchal [H.], 

 San Jose [J.], in the Rio Guacalate (Duenas) [G.], San Salvador [S.], and Libertad [L.] ; 

 also the fishes from the Lakes of Amatitlan [Am.] and Atitlan [At.] may be referred to 

 the same province, 



[The species printed in italics in the following lists are found also in one or more 

 other provinces, and in Atlantic rivers.] 



Heros macracanthus Cli. H. — — — — 



trimaculatus Ch. H. — — — 



, • iiigrofasciatus — — — — — -^™- ^^- 



guttulatus — — — — — ■^™- 



Agouostoma microps — — — G. 



Arius guatemalensis Ch. — — — 



platypogon — — — J- — 



csenilescens — H. — — — 



Pimelodus guatemalensis — H. — - — — — 



Anacyrius yuatemalensis — H. — — — — 



Tetragouopt. microj)hthalmus .... — — — — — -A-m. 



huniilis — — — — — ^^™' 



Funduhis giiatemalensis — — — G. — Am. 



pachycephalus — — — — -^^- 



punctatus Ch. — — — — 



Anableps dovii Cli. — - — — — 



Pcecilia mexicana Ch. H. — G. — Am. — 



dovii — — — — — Am. — 



Girardiniis pleurospilus — — — G. — — — 



Chipea libertatis — — — — L- — 



Lcpidosteus tropicus — H. — — — — — 



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