INTRODUCTION TO THE ODONATA. 
THE sources of the Odonate material treated in this Volume are shown by 
Taste A.—ALPHABETICAL List, By CoUNTRIES, OF THE LOCALITIES IN WHICH 
THE ODONATA WERE COLLECTED. 
This list gives the State, Territory or Department, and the temperature zone in which each locality is 
situated, the approximate altitude in both metres and feet, the name of the collector, the date at which the 
collection was made, and any pertinent remarks. 
mean annual temperature of more than 30° C, (86° F.), II. of 30°-25° C. (86°-77° F.), III. of 25°-20° C. 
(77°-68° F.), IV. of 20°-15° C, (68°-59° F.), V. of 15°-10° CO. (59°-50° F.), VI. of less than 10° ©. (50° F.). 
The extent of these zones is shown on Map No. 1, the explanation of which indicates the data on which 
it is based. The altitudes have been taken from Mr. H. 8S. Gannett’s “ List of Altitudes in Mexico, Central 
and South America” (Bull. Internat. Bureau Amer. Repub. xvii. no. 3, Sept. 1904), from data supplied by 
collectors, and from other special sources mentioned under each country. 
The temperature zones are denoted as follows:—I. Zone of 
Special sources for the altitudes here given have been the lists by Drs, Felix and Lenk (Boletin Soc. Geog. y Estadist. Rep. 
Mex. iii, 1894), Romero’s ‘Geographical and Statistical Notes on Mexico’ (New York, 1898), La Comision Geogrdfico- 
Exploradora for the State of Vera Cruz (Revista Soc. Cien. Antonio Alzate, xxiii. pp. 31-32, 1905), Dr. Sapper for Yucatan, &c. 
(Petermann’s ‘ Mittheil.,’ Ergiinzungsband xxiv. no. 113, 1894, and xxvii. no. 127, 1899, and Boletin Inst. Geol. Mex. 1896). 
Only two of the collectors quoted have published itineraries, J. F. McClendon (Ent. News, xvii. pp. 26-27, 1906) and 
P. P. Calvert (J. c. xviii. pp. 2381-237, 1907). Notes in the “ Remarks” column quoted from “ Gadow ” are from Dr. Gadow’s 
paper in Proe. Zool. Soc. London, 1905, ii. pp. 196-199. A “C” after the name of a locality indicates that it has been 
treated as falling in the central plateau. 
MEXICO. 
Altitude. | 
. . Temp. : | 
Locality. State or Territory. Zone Coilector. Date. Remarks, 
" |Metres.| Feet. | 
Acaguizotla ...........6:: eee Guerrero. III | 1067 | 3500 | Smith, H. H. Oct, 1888. 
Acambaro ......cceccecee eee ee C| Guanajuato. IV | 1860 | 6100 | Rhoads, 8. N. ' Mar. 30, 1899. 
Acaponeta ........:6e.csereeee ees Tepic. Il 90 | 300 | Eisen & Vaslit. _ Nov., 1894. 
Acapulco .........: eerie Guerrero. IL 4 14 | Agassiz, A. | | 
Wy tee ntbeeeeeeesee saan: » ve . ... | Hassler Exp. | Aug., 1872. Smithsonian Rep. 1872, p. 91. | 
 iiuartsteseeeeesesee: . ne Smith, H. H. “Sept., 1888. 
to ett e ne ceee een eeeen ences ” tee White, C. H. _ April 17, 1891. 
» deeeecneneeerecegeee nes ” ee ee ee eee ce seeeees | Cited by Hagen, 1861. 
Agiabampo  ..........eeeeeeeees Sonora. — lit te ... | (Batty, J. H. ?) | 
Aguascalientes ..............- C} Aguascalientes. IV | 1884 | 6180 | Calvert, P. P. : Aug. 27, 1906. Odonata taken at ponds at the 
public bath-house near the 
Mexican Central R. R. Station, 
and als) a little farther west- 
ward, but on the eastern edge 
of the town. 
rrr errr C ” Deam, C. C. Dec. 7, 1898. 
Terre C » Howard, L. O. Sept., 1901. 
