Classijiratiou of the Order Aficrort/pr/'ni. 325 



T liere propose tlie new e:eneric name Lamprichlhys for 

 Haplochilus tanpani'canus, Biuleng., a silvery fish which 

 differs from Haplochilichthijs in the strongly compressed 

 body, the very long anal fin, and tlie more numerous vertebrae 

 (41 instead of 28). 



Tlie 01i,2:ocene and Miocene Prohfn'as, Sauv., seems to be 

 related to Fuiululus ; it lias 32 to 34 vertebrae (A. S. Wood- 

 ward, Cat. Fobs. Fish. iv. p. 290, 1901). 



3. Orestiin^js. 



The remarkable genus Orestias includes about twelve 

 species from elevated hikes in the Andes of Peru, Bolivia, 

 and C'liile. Externally it differs from Funduhis chiefly in 

 the absence of jielvic fins, but the absence of parietals and the 

 f(nked epipleurals are differences of considerable importance. 

 Vertebra? (in 0. pentlandii) 36. Pellegrin has given an 

 interesting account of these fishes (' Lacs des Haut Plateaux 

 de I'Amerique du Sud,^ 1907 ; also in C. R. Acad, des 

 Sciences, 1904, and Bull. Soc. Zool. xxix. 1904, p. 90). 



4. CSARACODONTIN^. 



Differ from the Fundulinse especially in tliat they are 

 viviparous; the anal fin of the male has the first 5 or 6 rays 

 short, stiff and subeqnal, separated by a more or less distinct 

 notch from the rest of the fin. Vertebras rather numerous 

 (38 in Zoogontticus r(hustus, 44 in Goodta atri'pinnis). 

 Four genera, Zvogoueticus, Guodea, Girardtuichthgs-, Chara- 

 codon, with seventeen species, almost peculiar to the system 

 of the Rio Lerma in Mexico. 



Zoogontticus has the jaws and teeth of a Fandidus, but 

 Cliaracodon and Girardinichthys connect it with Goodea, in 

 which the mouth is small, the teeth are movable, compressed, 

 and bicu-pid, and the rami of the lower jaw are loosely 

 connected [rf. Regan, Biologia Centr.-Am., Pisces, pp. xviii 

 and 85). 



5. Jentnsiinjs. 



Jenynsia^ with three or four species from the La Plata 

 and Argentina, has the osteological characters of the Futidu- 

 liiite, but it has tricuspid teeth and is viviparous ; the male 

 intromittent organ is so similar to that of Anabkps that it 

 can hardly have been independently evolved in the two 

 genera. As noted by Garnian, the males of Jenynsia are 

 " rio-hts and lefts," i. e. the intromittent organ is more easily 



