92. 

 SPILOSOMA WALKERII. 



Order Lepidoptera. Fam. Arctiadas Leach. 



Type of the Genus Bombyx Menthastri Fah. 

 Spilosoma Stephens's MSS. Bombyx Linn., Fab. Arctia Schr., 

 Lat., Leach. 



Antenna nearly of equal length in both sexes, densely covered 

 with short scales, bipectinated in the male (f. I), serrated in the 

 female (2), the former with the branches ciliated, terminated by 

 a bristle in both sexes. 

 Labrum and Mandibles small and obscure. 

 MaxillcE short, flat, membranaceous, composed of 2 separate fila- 

 ments, ciliated at their apex (3). 



Labial palpi projecting horizontally from the head, distant, very 



hairy, cylindric, 3-jointed, 1st and 2nd joints of nearly equal 



length, terminal joint not very small oval-conic (4 and 4 a). 



VVings trigonate, slightly deflexed, undivided. Body short, robust in 



both sexes. Legs short robust. Tibiae with a spine on the internal 



side of the anterior pair, 4 posterior with spurs at their apex. Tarsi 



5-jointed. Claws vertj minute (8 afore leg). 



Caterpillars very hairy, with 6 pectoral, 8 abdominal, and 2 anal feet. 



Walkerii Nob. 



Pale buff-colour. Palpi, antennae, and upper side of legs black. 

 Abdomen orange, each segment having a black spot on the back 

 and one on each side above, and a row of black spots on each 

 side beneath. Superior wings with the costa and edges of the 

 nerves towards the base black, the spaces between the nerves 

 towards the posterior margin black, the .5th, Cth and 7th having 

 spots of buff. Inferior wings with a black spot near the centre, 

 and several upon and near the posterior margin. 



In the Cabinet of Sir Patrick Walker. 



In naming this rare and nondescript species after Sir Patrick 

 Walker, I am happy in the opportunity that it affords me of 

 acknowledging my obligations to him for the handsome manner 

 in which he forwarded me in my pursuits in a recent visit to 

 Scodand, as well as for much valuable information relating to 

 the natural history of that interesting country. 



