246 THE ENTOMOLOGIST. 



difference between these two species and S. Cecropia being that 

 their dorsal tubercles are of a uniform colour, orange-red or 

 yellow, while on Cecropia the first four dorsal tubercles are red 

 and the rest yellow. The tubercles on the sides are blue on these 

 three species, which are very closely allied. From my notes I 

 take the following on Samia Gloveri: — 1st stage, larvae quite 

 black ; 2nd stage, larvae orange with black spines ; 3rd stage, 

 dorsal spines orange-red, spines on the sides blue ; 4th stage, 

 dorsal spines orange or yellow, spines on the sides blue, body 

 light blue on the back and greenish yellow on the sides, head 

 green, legs yellow ; 5th and 6th stages, larvae nearly the same, 

 tubercles on the back yellow, the first four having a black ring at 

 the base, side tubercles ivory-white with a dark blue base. The 

 larvae of hybrid Gloveri- Cecropia were, as far as I could observe, 

 like those of Cecropia, but some had six red tubercles on the 

 back, instead of four as Cecropia. 



For the first time I became acquainted with the larva of Attacus 

 Roylei, the Himalayan oak-silkworm, but only obtained two pair- 

 ings from about sixty cocoons; this species I found most difficult 

 to pair in captivity. The few larvae I had of this species did not 

 go beyond the fourth stage, owing to the bad weather ; but it has 

 been successfully reared on the continent of Europe. From a 

 letter just received from a correspondent in Vienna, I hear that 

 with twenty-five eggs he obtained twenty-three larvae, which all 

 lived, and produced twenty-three large cocoons. The same 

 correspondent, with thirty-five eggs of Samia Gloveri, obtained 

 twenty cocoons ; the larvae were reared on a species of willow, 

 very likely a form of Salix caprea, with narrow leaves, white on 

 the under side. The weather in Vienna was very fine and warm 

 up to the end of August ; then not so hot, but still fine. 



Another species, which I produced this year, is a new hybrid 

 obtained by the crossing of Roylei (female) with Pernyi (male). I 

 obtained six such pairings, of long duration, and the eggs were all 

 fertile. The rearing this hybrid has been successful not only in 

 Europe, but also in the U. S. of North America. The cocoon of 

 this hybrid is much richer in silk than that of Roylei, and the 

 larva seems stronger and easier to rear than Roylei. The cocoon 

 of Roylei, thin and poor in silk, although it is of fine texture, is 

 surrounded by a large tough envelope ; the greater part of the 

 silk is wasted in the formation of this hard envelope, which 



