40 bulletin: miskim ov (OMrAU.vTivE zoology. 



Lafresnaye's type certainly represents the southern fomi, \\'ith the 

 bUie of a nujch more purphsh shade than in any example from Colima. 

 It is not quite so dark as Nelson's type, which is an extreme example, 

 but compared xsnth a series of topotypes it is an average specimen. 

 The specimen was mounted and on exhibition, in direct light, in the 

 Boston Society of Natural History for more than fifty years; it shows, 

 however, but slight mjury; the blue is perhaps a little dulled and the 

 black has become somewhat brownish. 



It is now obvious that C. s. puJchra Nelson is a synonym of C. s. 

 sanblasiano (Lafresnaye). The northern form being without a name, 

 we take pleasure in naming it in honor of Dr. Nelson. 



CiSSILOPHA SANBLASIANA NELSONI, subsp. UOV. 



Type.— M. C. Z. 65,111. Adult cf. Mexico: Colima. 21 March, 

 1913. Gustav. Gliickert. 



Characters. — Similar to C. s. sanhlasiana (Lafresnaye) of Acapulco, 

 but smaller; upper parts bright cerulean blue instead of rich ultra- 

 marine or C3'anine blue; under tail coverts and thighs dull ultra- 

 marine blue instead of cyanine blue. 



Measurements. — Type, adult cf ; wing, 143.5; tail, 155; tarsus, 39; 

 exposed culmen, 31. 



