ODONATA OF BAJA CALIFORNIA. 53 1 



Fuller descriptions will be needed to determine whether 

 these are two distinct species or variations in size. 



Macrothemis Hagen. 



Hagen, Stet. Ent. Zeit. xxix, p. 281, 1868. Biauer, Verb. Zool. Bot. 

 Ges. Wieu, xviii, p. 734, 1868. Kirby, Traus. Zool. Soc. Lond. 

 xii, p. 297, 1889. 



31. Macrothemis imitans Karsch. PI. xvi, figs. 33— 

 39- 



31. i. Karsch, Berl. Ent. Zeit. xxxiii, pp. 364, 367, 1890. 

 7 5 3? San Jose del Cabo, October, 1893, G. Eisen. 

 1 Sierra San Lazaro, September, 1894, Eisen & Vaslit. 



(5 Frons and clypeus pale blue, the former superiorly 

 and the vertex dark metallic blue. Lips yellowish or pale 

 brown, labrum blue at middle of base, middle lobe and 

 adjacent parts of lateral lobes of labium blackish. Occi- 

 put brown, rear of head green and brown. 



Thorax brown, a greenish antehumeral stripe widening 

 gradually upwards and differing in this particular from 

 Af. incqiiiiuiguis, where the stripe widens suddenly at its 

 upper end; sides with four pale green spots, one on the 

 mesepimeron, one on the metepisternum, two on the met- 

 epimeron. 



Legs blackish, anterior femora greenish beneath; tar- 

 sal nails of all the feet bifid, the inferior branch (:= tooth 

 of other genera) thicker and slightly longer than the tip 

 of the nail itself. (One ^ has an imperfectly formed tar- 

 sus in which the nails are abnormally short and with a 

 trace of a tooth.) Second and third femora, as noted by 

 Hagen for Macrothemis, /. c, p. 283, with a postero- 

 inferior row of short teeth, directed towards the knee on 

 the second, towards the base on the third. 



Abdomen of form similar to that of M. inequiungttis ^ , 

 blackish, the following markings bluish-green: an ante- 

 rior transverse band on 2, interrupted on the mid-dorsal 



