116 Twenty-fourth Report on the State Museum, 



fiftli segments with a bluish shade dorsally ; an indistinct lateral brown 

 sti'ipe, more conspicuous on the first three segments, running into the 

 head stripe ; the first two segments have also a brown dorsal line ; 

 below the stigmata is a brown stripe less distinct than the lateral 

 one. Caudal tubercle moderately elevated, shining black, surrounded 

 with dark brown. Caudal shield and plates reticulated with dark 

 brown. Prologs dark brown exteriorly, with a light band near the 

 base. 



In the larvse of Deilephila lineata (Fabr.), variations almost as 

 marked as the above, have been observed and figured by Mr. Riley .-^ 

 It is not improbable that these differences may also prove to be 

 sexual characteristics. 



The pupation of T. Ahhotii is not uniform, and consequently 

 diverse statements appear respecting it. Clemens states that it 

 '' takes place in a superficial cell ;" and in his generic diagnosis that 

 ''it prepares for pupation on or near the surface of the ground." 

 Riley, who has reared the larva, also represents the pupa as '' formed 

 in a superficial cell on the ground."f Harris, in observations on some 

 of the larvae which he had received, writes, " the green-spotted one 

 [male] went into the ground ; the others [females] * "^ * chrysalis 

 on top of ground July 14th. ":j: A female brought to me on the 

 29th of July of the present year, buried in the ground, while the 

 male described above transformed on the surface. 



* Third Bep. Ins. Missouri, 1871, pp. 141, 142, figs. 61, 62. 

 t Second Bep. Ins. Missouri, 1870, p. 79. 

 X Entomolog. ^Correspondence., 1869, p. 284. 



