486 CALIFORNIA ACADEMY OF SCIENCES. 



fourths the length. $ Epistoma violet or blue, a black 

 mark between it and the frons, thorax probably bluish in 

 life. 



Eyes pale blue or green with two parallel, horizontal, 

 black bands, of which the upper is less distinct. 



Of twenty-two individuals ( S 9 ) specially examined, 

 in twenty-one the nodal sector arises at the fifth postcu- 

 bital on the front wings, at the fourth on the hind wings, 

 while in the remaining one, a female, the point of origin 

 is at the fourth on the front wings, at the third on the 

 hind wings. 



Distribution. West Indies (Cuba, Hayti, Porto Rico, 

 St. Thomas, Trinity Is., Jamaica by W. J. Fox and C. 

 W. Johnson), Mexico (Putla, Baja California as above). 



9. Enallagma Eiseni n. sp. PI. xv, fig. 7. 



h t> Baja Purisima, April, 1889, C. D. Haiues. 



.3 Saa Jose del Cabo, not dated. 



4 San Jose del Cabo, Oct., 1893, G. Eisen. 



1 Mesa Verde, Oct., 189.3, G. Eiseu. 



3 Sierra San Lazaro, Sept., 1894, Eisen & Vaslit. 



1 San Jose del Cabo, Sept., 1894, Eisen & Vaslit. 



17 3 



5 Blue, with the following markings black which may 

 have a dark metallic green reflection: a small dot at 

 middle of base of labrum; the greater (basal) part of 

 the nasus; the antennee, except the first and the front of 

 the second joint; the vertex; a narrow transverse band 

 behind the blue postocular spots, these postocular spots 

 being cuneiform and connected by an uninterrupted, blue, 

 occipital stripe ; the dorsum of the prothorax, leaving, 

 however, the anterior and posterior borders, and on the 

 median lobe a median twin spot (absent in the 3 from 

 Mesa Verde) and a lateral spot each side, blue; a mid- 

 dorsal thoracic stripe and a humeral stripe each side, but 



