THE LARV^ OF SAMIA GLOVERl — STEECKER. 277 



blue; when mature, the color was nearly the same pale green, which 

 was much the tint of that of Cecrojna, but not such a clear blue-green : 

 more of duller hue. especially towards the lower part of the sides. There 

 were eleven pair of dorsal tubercles, the first nine pair lemon yellow, the 

 two last pair on anal segment pale blueish. The tubercles on the third, 

 fourth and fifth segments are largest, and have some small black spots 

 and marks on them, and are armed with short spines. On the twelfth 

 segment is a large yellow dorsal tubercle, also spotted with black. Three 

 rows of pale blueish lateral tubercles, which shine as if covered with 

 glazing. The first three of the upper row are the largest ; those of the 

 two lower rows the smallest. .Spiracles white, surrounded by a fine black 

 line. Feet yellow ; greenish at base, black at ends ; prolegs green, ter- 

 minally yellow. Length three inches. 



Of twenty-seven young larvge, I only succeeded in raising one ; the 

 others all died after the first or second moults. This one I fed on the 

 leaves of the common red currant. A correspondent inf<n-ms me that he 

 had reared them on the plum. 1 would suppose that like Cecropia, and 

 others of the Atfaci, it will feed on a number of different plants. 



The remarkable and beautiful argenteus looking cocoon of this species 

 I have already described on page 128 of the Lepidoptera, Rhop. et Het. 

 Before concluding I would briefly state the difference between the 

 larvae of this and the three allied species, Cnlumhia, S. I. Smith, Cecropia-, 

 L., and Geanothi, Behr., which consists principally in the dorsal tubercles. 

 Columbia has three pair of coral red ones, situated on the third, fourth 

 and fifth segments ; the remaining six pair, as well as the single one of 

 last segment, are yellow. Lateral tubercles whitish. 



Cecropia has two pair of coral red tubercles ; these are on the third and 

 fourth segments ; the remaining dorsal ones are yellow, as in the preced- 

 ing. Lateral ones pale blue. 



Gloveri has the same tubercles in number and form as the two species 

 above alluded to, but, as I have shown, these are all yellowish. Lateral 

 ones blueish white. 



Ceannthi has three pair of dorsal yellow tubercles. These are on the 

 third, fourlh and fifth segments; the sixth segment has merely faint 

 white raised spots in place of tubercles, and the remaining segments are 

 without either tubercles or spots dorsally, with the exception of the 

 twelfth, which has the usunl single yellow tubercle. This species differs 

 from all the others in the absence of dorsal tubercles on all the segments 

 except the third, fourth and fifth. It also is devoid of lateral tubercles, 

 these being only represented on the third segment by white spots, and on 

 the fourth to eighth by mere black points ; the ninth, tenth and eleventh 

 segments are devoid of all spots whatever. 



Thus it will be seen that Gloveri differs from Columbia and Cecropia in 

 having all the tubercles yellow, and from Ceanothi in having dorsal and 

 lateral tubercles on all segments, (excepting, of course, the first and 

 second), whilst the latter has these appendages only on the third, fourth 

 and fifth segments, besides the single one on the twelfth. 



[Proc. D. A. N. S. Vol. II.] 37 [Dec. 1878.] 



