264 ENTOMOLOGICAL NEWS. [June, ’o8 
Crambus oslarellus sp. nov. 
Expanse of wings 25-30 mm. Head and palpi cinereous. Primaries 
and thorax lustrous bronze, with a silvery white stripe from the base 
to near subterminal line; a tooth in the middle on the lower side, 
and a small white spot above the outer end of white stripes. Sec- 
ondaries smoky white. The species closely resembles Crambus prae- 
fectellus, and has no doubt been confounded with it. The principal 
points of difference are its much larger size, the smoky hind wings, 
and the absence of reddish line inside of white subterminal line, which 
is present in praefectellus; also the subterminal line forms nearly a 
right angle, which is not the case in praefectellus. 
Described from ten specimens, collected at Silverton, Colo., 
and Clear Creek, Colo., vii, 3, 07, by Mr. E. J. Oslar, in 
whose honor this species is named. 
Three related American species of Aeshna (Odonata). 
By E. B. WILLIAMSON. 
The three species are: multicolor Hagen, mutata Hagen and 
jalapensis n. sp. They are characterized as follows: 
Rs forking proximal to the level of the stigma, with 3 or 4 rows 
of cells between the fork at the level of the distal end of stigma; 
the proximal side of the triangle in hind wing more than half as 
long as the posterior side; membranule fuscous with the base more 
or less white or gray; stigma of adult males dark brown or black above; 
dark yellowish brown beneath; immature males and females have 
the stigma golden yellow, paler beneath; a ventral spinulose tubercle 
on abdominal segment1; a black T-shaped spot on the frons, which 
spot widens posteriorly to enclose the vesicle in black, and margins 
the eyes in front with a line of black; thorax brown with a dorsal 
and two lateral stripes on each side; legs black, the first femora of both 
sexes beneath with a pale streak for half their length and all femora 
of females reddish brown above for the greater part of their length; 
abdomen constricted at segment 3; males with a minute median dor- 
sal tooth on abdominal segment 10, and appendages seen in profile 
distinctly forked at apex with an angulate dorsal carina; abdominal 
appendages of the female of usual form, the apex rounded obtuse, 
varying from 5 to 7 mm. in length in different species. 
DIFFERENTIALS :—Mutata and jalapensis are separated at 
once from multicolor: males,—the inferior basal tubercle of 
the superior appendages in multicolor at one-fourth to one-fifth 
the length of the appendage, in jalapensis and mutata at one- 
