AND THEIR TRANSFORMATIONS. 37 
SPECIES 1.—TROCHILIUM VESPIFORME. 
Plate vii. fig. 3. 
Synonymes.—Sphinx Vespiformis, Linnzus (not Sesia Vespi- Zigeria Asiliformis, Stephens ; Curtis; Duncan, Brit. Moths, aii 
formis, Laspeyres; Algeria v., Curtis, &c.). 13, fig. 2; Wood, Ind. Ent. t. 4, f, 25 
7° 9 » J . 4 . . ; . . 
Memythrus Vespiformis, Newman in Sph. Ves b aa 78 : + 
y “ if os esp. Paranthrene Asiliformis, Hiibner, Verz. bek. Schmett. 
Paranthrene Vespiformis, Newm. in Ent. Mag., 1, 83. Sphinx Tabaniformis, Borkh. (var.). 
Sphinx (or Sesia) Asiliformis, Hiibner ; Fabricius ; Laspeyres ; Sphine CEstriformis, Kirby and Spence, Introd. vol 1, pl. 3, £.2, 
ft > e . b . 
Haworth; Donovan, Brit. Ins. v. xi. pl. 384. Kirby and Spence, Ist edit. 
Introd. v. 1, pl. 3, fig. 2, 3rd edit. 
This is the largest British species, varying in the expansion of its wings from an inch to an inch and a quarter. Hea be 
It is further distinguished by having the fore wings covered with dark scales; it is of a blue black colour, 
with a white line before the eyes; the collar is yellow, as are also the tips of the palpi. The thorax has a 
lateral stripe and a spot of yellow, at the base of the fore wings. The abdomen has three equi-distant, yellow 
fascie, and the tail has two longitudinal streaks of yellow. The femora are black, the hind ones yellow at the 
base ; the tibize fulvous, and marked with a black spot on the outside, and the tarsi fulvous. The male differs 
in being smaller, with the antennz decidedly pectinated, and in the abdomen having five belts, the alternate ones 
being very slender. 
The larva of this species feeds, according to Oehlmann, on the wood of Betula alba. Borkhausen gives 
Populus dilatata as its food. The species (for the restoration of the specific Linnean name * to which we are 
indebted to Mr. Newman, or rather to Mr. Bracy Clark, as stated by Lespeyres, and by Mr. Newman himself) 
is of very rare occurrence in England, but has been occasionally found in the woods of Surrey, Kent, and 
Middlesex, in the London district. 
“B Antenne as long as the body; of the males generally ciliated ; anterior wings with the disc hyaline.” 
‘a. Abdomen more or less robust and abbreviated, fasciated with whitish or yellow.” 
SPECIES 2.—TROCHILIUM CHRYSIDIFORME. 
Plate vii. fig. 4. 
Synonymes.—Sphing (or Sesia) Chrysidiformis, De Villars ; | Bembecia Chrysidiformis, Hiibner, Verz. bek. Schmett. 
Borkhausen ; Laspeyres; Haworth; Esper; Hiibner ; Ochsenheimer. Pyropteron Chrysidiformis, Newman, Ent. Mag. 1, 76. 
fEgeria Chrysidiformis, Stephens ; Curtis; Duncan, Brit. Moths, Sphinx Hemorrhoidalis, Cyrillo. 
pl. 13, fig. 4. Wood, Ind. Ent. pl. 4, fig. 5. Sesia Crabroniformis, Fabr. 
This handsome species measures ten lines in the expansion of the fore wings. It is of a blue-black colour ; 
the last joint of the palpi is naked, and pale yellowish. (In my specimen I do not observe the peculiarity 
described by Mr. Newman, upon which his genus Pyropteron is founded). The head has a white spot in front, 
and the collar is yellowish ; the thorax has a few scattered yellowish hairs, and a white spot at the base of each 
of the fore wings; the abdomen has the fifth and last segment on the upper side margined with white; the fan 
tail is black, with the middle yellow. The fore wings are saffron-coloured, with an elongated, hyaline patch in 


* In the Linnean description in the Systema Nature, the wings are described as fenestrated ; and in the Fauna Suecica, as having a yellowish 
sso much perplexed subsequent Lepidopterists, arises from the wings having been much rubbed. The obser- 
spot, This description, which ha : 
: ae at once disproves the conjecture of Laspeyres, &c., that it was intended either for 
vation of Linneus, that it is twice the size of Tipuliforme, 
Ichneumoniforme or Cynipiforme ¢. 


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