NO. 1482. ARGENTINA FISHES— EVERMANN AND KENDALL. 



97 



Both pejerrey and trucha, in ripe spawning condition, were fre- 

 quently caught in one and the same haul of the collecting nets. 



The pejerrey is quite as prolific as the trucha, its eggs are capable 

 of artiticial fertilization, and the species can be artiticiall}^ propagated. 



Since Mr. Titcomb's return from Argentina the pejerrey has been 

 propagated to a limited extent. The eggs were obtained from fish 

 caught in Lake Chascomus, transferred to Buenos Aires and placed in 

 McDonald jars. After being eyed they were distributed in lakes not 

 known to contain any tish and left to nature's care. Fish Culturist 

 Tulian, who was placed in charge of the work after the methods had 

 been developed by Mr. Titcomb, states that when the eggs were thus 

 placed in the lakes he sheltered them with a network of brush to keep 

 away predaceous birds. He reports that he has heard from one of the 

 lakes where these eggs were planted, that numbers of small fish have 

 since been seen, and he believes the plant was a success. 



The eggs are quite adhesive in their nature, and should apparently 

 be handled much like those of the pike perch. It is the policy of the 

 present administration in Argentina to propagate the pejerrey on a 

 large scale and distril)ute them in waters not now productive. 



The largest pejerrey seen by Mr. Titcoinb was taken in Lake Traful 

 and measured i8 cm. long (probably B. inicrolejndotus). 



Proportional meanurerneNts of BusUichthys honariensis. 



a Deformed. 



36. BASILICHTHYS MICROLEPIDOTUS (Jenyns). 



PEJERREY DE MANILA; PEJERREY DE MALVINAS, 



Atherina microk'pidota J ENYSS, Zool. Voy. Beagle, Pt.4, Fish, 1842, p. 78, pi. xvi, 



fig. 1, la, lb, Valparaiso. 

 Antherinichthysmicrolepidotus, Perugia, Ann. Mas. Civ. Stor. Nat. Geneva, 2d ser., 



X (XXX), 1890-91, p. 32 (Bocca del Eio Negro).— Berg, Anal. Mas. Nac. 



Buenos Aires, IV (2d ser., I), 1895, p. 66 (Costa patogonica; Mar del Plata; 



Montevideo). 



Berg states that this species is usually small. Those that occur in 

 Mar del Plata and Mar Chiquita measure usually from 15 to 17 cm. 

 in length. He further says that according to Eigenmann and Eigen- 



