94 



spec, as these secondary spinules are glandular setae which are 

 bifurcated. In 1905 (p. 17 — 21 and p. 34—45) Packard worked 

 out the relationship between the Ceratocampidae and the Sphingidae. 

 He believed to have found a proof in the horn, which is built in 

 a similar way, on the 8th abdominal segment. 



Dyar (1894, p. 204) says only that on the 8th abdominal 

 segment there is the dorsal tuberculum and draws attention to 

 the position of IV and V. Tuberculum IV is placed under the 

 stigma, tuberculum V in front of it. Packard (1905) follows him 

 here, as Fracker does in 1915. 



I think there is not a single proof of a rotation of 90 degrees like 

 that, round the stigma and I consider IV of Dyar to be in this case 

 s. infrastigmalis (i. e. V) and his V as a s. 2irostigmalis i. e. as III B 

 of Quail. Further I draw attention to the peculiar secondary setae. 



I was not able to obtain Forbes' work of 1911. 



Sphinx ligmtri. 



Material in alcohol. July 1915. Plate IV, figure 1. 



Instar /. Length 6 mm. 



Prothorax. There are : s. dorsalis, s. suhdorsalis^ s. suprastig- 

 malis, s. dorsolateralis, two s.prostigmales, two s. basales, some small 

 s. pedales. Beneath s. siibdorsalis, at the same height as s. dorso- 

 lateralis, is a s. stibdorsalis inferior. 



Mesothorax. We find two s. dorsales, perhaps arisen from the 

 blending of s. dorsalis and s. subdorsalis; s. dorsolateralis united 

 with s. suprastigmalis, one s. prostigmalis in front of a wing 

 rudiment, which at first I thought to be a rudimentary stigma, 

 two s. bascdes, some s. p>edales which are small. 



Metathorax == Mesothorax but s. dorsolateralis is simple, and 

 the wing-rudiment is not distinct. 



Abdomen 1, 2. S. dorsalis, s. subdorsalis, s. suprastig mails, s. 

 jirostigmiilis, s. infrastigmalis, s. basalis and ventral of it two 

 setae probably agreeing with the s. pedalis and s. ventralis. 



Segm. 3, 4, 5, 6 = 1. There is a s. propedalis and a s. ventralis. 

 „ 7 = 1 but only one s. projjedalis. 



