IIYLOICUS. 4g 



the sides, each bounded by yellow below ; oran-e-coloured 

 spiracles, and a dark brown horn. The pupa, which is formed 

 in the ground, is reddish-brown, with a rather prominent 

 sheath for the proboscis. 



The moth appears in May and June, sometimes after 

 remaining two years in the pupa. It is one of the commonest 

 of the larger SphingidcB in England ; but the colours of the 

 larvre are so similar to those of the food-plant, that they are 

 difficult to detect, notwithstanding their large size and bright 

 colour. 



GENUS IIYLOICUS. 

 Hyloicus, Hiibner, Verz. bek. Schmett., p. 139 (1822?); 

 Grote, Proc. Ent. Soc. Phihid., v., p. 190 (1865). 



Hyloicus includes a number of moderate-sized and rather 

 dull-coloured Hawk-moths found in various parts of the world. 

 The wings are shorter and less pointed than in Sphinx, and 

 the fore-wings are broader towards the base. The larva is 

 provided with a horn, but is much more slender than in 

 Sphinx, and is marked with continuous longitudinal lines, 

 instead of oblique lateral stripes. 



There are several American genera allied to Hyloicus, 

 including species measuring two or three inches across the 

 wings, in which the hind-wings are red or yellow, with black or 

 brown borders. These are Dilophonofa (Burmeister), P/iryxus 

 (Hiibner), Anceryx (Walker), &c. 



THE PINE HAWK-MOTH. HYLOICUS PINASTRI. 

 (/'/a/6' CVJL, Fig. 3.) 



Sphinx pinastri, Linnajus, Syst. Nat. (ed. x.), i., p. 493, no. 20 

 (1758); id. Faun. Suec, p. 288 (1761); Drury, 111. Exot. 

 Ent., i., pi. 27, fig. 2 (1773) ; I'^sper, Schmett., ii., p. 106, 

 Taf 12, figs, i-i, p. 2^^^^, Taf. 2>(^, fig. 9 (1779-1783); 

 14 



