464 CALIFORNIA ACADEMY OF SCIENCES. 



timating the amount of variation, except where the con- 

 trary is expressly stated. 



A brief summary of the resuhs obtained follows. 



I. The Mexican territory of Baja California, com- 

 prising the peninsula of Old or Lower California, is some 

 750 miles long, and stretches in latitude from 32° 34' N 

 to 22° 50' N. Its lower portion, the Cape San Lucas 

 region, thus lies within the tropics. Of this Cape Region, 

 Mr, T. S. Brandagee states: " The Flora of the coast is 

 subtropical and a considerable portion West Indian, many 

 of the plants perhaps introduced ; that of the elevated 

 regions is largely Sonoran." 



Collections of Odonata were made at the following 

 places : 



(a) in the upper or supra-tropical portion, chiefly by 

 Mr. Haines, at El Rosario 30° f N, 115° 38' W.* 



San Raymundo 25° i& N, 111° 19' W, or 30° 41' N, 

 115° 48' W. 



Comondu 26° 18' N, iii^ 53' W. 



San Luis 25° N, iii^ 7' W, or 24° 58' N, iii" 54' W. 



El Paraiso 28' 40' N, 113° 34' W. 



San Fernando 29^ 57' N, 115"^ f W. 



San Ignacio 25° 30' N, iii"^ 22' W, or 27° 15' N, 

 112° 45' W. 



Baja Purisima 26° N, 112 W. 



(d) in the Cape or tropical portion , chiefly by Dr. 

 Eisen and Mr. Vaslit, at San Jose del Cabo 22° 58' N, 

 109° 45' W, Mesa Verde, Coral de Piedras, Sierra Lagu- 

 na, Sierra El Taste, Miraflores and Sierra San Lazaro. 



* The latitudes and longitudes, which are approximate only, haVe been 

 obtained by measurement from the "Carta General de la Eepublica Mexi- 

 cana formada en el Ministerio de Fomento con los datos mas recieutes 

 por disposicion del Secretario del Kamo, Gener alCarlos Pacheco. 1890." 

 Some help has been gained from the map in Gaston Koi;tier's "La Mex- 

 ique." Paris, H. Le Soudier, 1891. 



