Hawk- Moths found in Forfarshire. 629 



to such a purpose, for the best of all reasons, because it does 

 not possess any ; so that it is likely Mr. Woodward, when he 

 hazarded this conjecture, had not seen the insect in its larva 

 state ; or else his insect and mine are different, which I scarcely 

 think is the case. — William Gardiner, junior. Dundee, Sept. 

 27. 1834. 



I send you a specimen of Trichiosoma lucorum, the only one 

 that has yet left its cocoon, in order that you may identify it 

 with that of your other correspondent, before the publication 

 of my remarks on the insect. — William Gardiner, junior, 

 Dundee, May 19. 1835. 



[The specimen from Mr. Gardiner was, on the authority of 

 Mr. Westwood, of the species Trichiosoma lucorum. Mr. 

 Woodward has not mentioned his seeing the insect in a state 

 antecedent to the cocoons of it brought home by his son, from 

 which imagoes were eventually produced; and, as the imagoes 

 are partly shaggy with hair, one not familiar in entomology 

 (and Mr. Woodward would not pretend to be) might suppose 

 that hairiness would appertain to an insect in its earlier stages 

 as well as in its final one.] 



A List of Species of Moth of the Group of Hawk-Moths 

 (Sphingmss) which have been found in Forfarshire, and Observ- 

 ations on them — But few species have yet been observed in 

 this county, and of these few no one is very common ; they 

 are the following : — 



£ygae % na filipendulae. — This is very rarely met with, except 

 on the Sands of Barrie, where it, in some seasons at least, 

 swarms in prodigious numbers, giving life and gaiety to the 

 desert scene. It, while robbing the florets of Serratula arven- 

 sis [Cnicus arvensis, Cirsium arvense]) of their sweets, hovers 

 on the wing in a manner similar to that of the humming-bird 

 hawk-moth (Macroglossa stellatarum), but does not emit any 

 sound. The pupa case, formed by its larva, is a singular and 

 durable structure ; and, as I am not aware that it has ever 

 been figured, I add a sketch from one in my possession, found 

 on June 2., 1833, from which an imago was developed on 

 July 7. It is fixed to the stem of a gramineous plant, and 

 formed of a thin but tough and elastic membrane, of a pale 

 yellow colour. [It has been judged that the subject cannot 

 require illustrating to entomological readers : the cocoons, or 

 pupa cases of 2ygae v na 16ti, noticed in VII. 534., were, in struc- 

 ture, similar to that Mr. Gardiner has described of Z. fili- 

 pendulae.] 



Smerinthus populi. — The most common species we have ; 

 and, although the moth is but seldom seen, as it flies by night, 



