6 DISTRIBUTION AND DISPERSION Of LEPTINOTARSA. 



Curiously enough, the records of Stal are the only oues known from South America, but 

 they are probably accurate, as I have specimens from the Rio Sucio * on the Isthmus of 

 Darieu. In Panama * it seems to be generally distributed, especially in the lower portions 

 of the country. In Costa Rica, Rogers and Van Patten record it from the slopes of Volcan 

 de Irazu, and in Nicaragua, Jameson and Belt have found it abundant in Chontales. It 

 does not seem to have been recorded from Spanish Honduras, although Blancaneaux 

 found it near the Rio Sarstoon, in British Honduras. In Guatemala numerous records 

 are known El Reposo, Purula, Tamahee, Duenas, Capetillo, San Geronimo, Cubliquitz 

 (Champion), and Guatemala (city); in Mexico from Vera Cruz (city),* Cordoba,* Tuxtla, 

 Orizaba,*Misantla,*Cerrode Plumas (Hoge,Sall6),Tierra Blanca,*Motzorongo,*Achotol,* 

 Guadalupe,* Tesonapa,* ' Vista Hermosa,* Los Changos,* Jalapa,* in the State of Vera 

 Cruz; at Oaxaca* (Sall), Mitla,* Tlacolula,* Rincon Antonio,* Ubero,* Mato Ouamado,* 

 Obispo,* Agua Fria,* Perez,* San Marcos,* Juanita,* and Tomellen,* in the State of 

 Oaxaca; Guanajuato (Duges, Salle). Its distribution is wide, although it is nowhere a 

 common species and is always local. At no place does it seem to have reached the Pacific 

 slope of the Central American or Mexican region, and it is not common along the Atlantic 

 coast. In Guatemala it is apparently a common species and in Mexico, where it is best 

 known, it is abundant locally. In Mexico it is far from having the general distribution 

 given by Stal; in fact, it is absolutely limited to southern Mexico, especially to the 

 States of Oaxaca, Chiapas, Tabasco, and Vera Cruz. 



The distribution of this form is shown on the map (plate I) to be confined entirely 

 to the Atlantic slope and the savannas of Vera Cruz and Tabasco, but appears tc be 

 absent from Campeche and Yucatan. To the westward it has occupied the head of the 

 Rio Balsas Valley, finding entrance through the pass afforded by the Rio Ouiotepec, and 

 by the Oaxaca plateau. 



Lcptinotarsa diversa. 



This species is known only from the western portion of the valley of the Rio Grande de 

 Santiago,* La Barranca,* 2 near Guadalajara, Jalisco, Mexico, and near-by barrancas. 



Leptinotarsa signaticollis Stal. 



This species, also a close relative of L. undecimlineata, is confined to the valleys of the 

 Rio Balsas system. It has not been found outside of this area, and, indeed, not over the 

 entire system. It is recorded from Tacambaro and Morelia (Hoge), in Michoacan; 

 Amula and Xucumauatlan (Smith), in Guerrero; Cuernavaca* (Smith), Alarcon,* 

 Cuautla,*and Jojutla,* in Morelos; and Puebla,* Matamoros delzucar* (Salle), Atlixco,* 

 and Tatetla,* in the State of Puebla. The distribution is plotted on plate I, along with 

 that of L. undecimlineata. The habitat of this species appears to be a belt of country 

 upon the eastern side of the Rio Balsas Valley. 



Leptinotarsa angustovittata Jacoby. 



Recorded from Guanajuato (Sall); from Morelia and Tacambaro, in Michoacan (Hoge); 

 and from Xucumanatlan (Smith), in Guerrero. I have reared it from L. undecimlineata 

 fromTierra Blanca,* in Vera Cruz. 



Leptinotarsa oblongata n. sp. 



This species, previously confounded with L. multitaniata and L. decemlineata, has a 

 peculiar distribution. It is confined to the valleys of the Rio Balsas, Rio Verde, and Rio 

 Tehuantepec, and the headwaters of the Rio Quiotepec, in southwestern Mexico. I have 

 taken it in all its stages at Cuernavaca,* Cuautla,* Yautepec,* Jojutla,* Trienta,* and 

 Puente de Ixtla,* in the State of Morelos ; Iguala,* Naranjo * Los Ainates,* and Kilo- 



1 Also spelled Tepextempa, an old Indian town. 



2 The correct name of this locality is La Barranca de Oblatos. A name applied to part 

 of the canon of Rio Grande de Santiago near Guadalajara, Jalisco, Mexico. 



