2 47 mm. 
sal J thoracic stripes about 3 mm. long, less than 1 mm. wide and 
rowed at cither end. First lateral stripe less than 1 mm. wide, of 
ee eevee ant of ite pattern, not diffuse. Second 
fal stripe similar to first, but slightly wider above on the upper 
terior) side, the lower (posterior) edge nearly straight. In the 
ale the lateral stripes are slightly wider than in the male. Ab- 
nen variable, but blue areas greatly reduced. In no case 
jo tl t areas B seem to be joined with pale areas C as on seg- 
nts 4-6 in mutata. In four males collected by Dr. Calvert there is no 
ace of the apical pale spot, D, on segments 4-10. In a male collected 
by Mr, Godman [and in 1 4 collected by me at Jalapa, but not seen 
= ipa _Williamson—P. P. C.] these spots are present but obscure 
dr In Dr. Calvert's four specimens segments 8-10 are entirely 
= ¢ excepting pale narrow apical articulations on 8 and 9 
epee “amp h the kindness of Dr. Calvert I have studied four 
es collected by himself and one male and one female col- 
ed by Mr. F. D. Godman, all at Jalapa, Mexico. The types 
are one male in Dr. Calvert's collection, taken by 
lf, and the female in Mr. Godman’s collection. The ele- 
vation of Jalapa is 4315 feet. Dr. Calvert writes that his speci- 
jens were taken along a small river which flows through the 
hyd m, above a dam near a mill, where the current was slow, 
d between 10 A. M. and noon of a sunny September day, 
F 4 706. It is not impossible that multicolor may be found in 
i¢ vicinity of Jalapa, as I have found the two species which 
: at hav t been associated under the name constricta at Bluffton, in 
one case flying within 100 feet of each other, but each plainly 
oy its own habitat. 
‘In the preparation of this paper I am under obligations to 
. Calvert who has kindly loaned me several specimens of 
= maiticoor, from a wide range of localities, and the five males 
_ and one female of jalapensis which I have seen. To him I am 
> ho indebted for invaluable advice and criticism. Professor 
Walker kindly compared material with specimens at the M. C. 
Z. and loaned me two males and one female of mutata which 
Professor Needham had sent him for study. Mr. Henshaw 
furnished me with some details regarding Hagen’s type of 
