288 Mr. Poulton's notes in 1886 



reminding me of the earliest traces of purple borders 

 in Sphinx ligustri. As the larvae entered the later 

 stages the red borders contracted and became broader, 

 finally assuming the well-known appearance of somewhat 

 elongate spots on the anterior margin of the oblique 

 stripes. I have already mentioned the relatively slight 

 development of the red marking upon the seventh 

 abdominal segment. This observation of the primarily 

 linear appearance of the spots seems to indicate that 

 these features in S. Mice have arisen from a modification 

 of a normal coloured border, as I suggested last year 

 (Trans. Ent. Soc. Lond., 1886, Pt. II., p. 139) :— " It 

 seems possible that the appearances seen in Smerinthus 

 Mice are due to a fading away of the character (i. e., 

 coloured borders) instead of its origin. In the other 

 Smerinthus larvae the shortening borders may have been 

 arrested at the spot-stage, which has evidently been 

 made use of as an independent larval marking, and 

 which has received additions in the other rows." 



2. Description of an unnamed Sphinx larva from 

 Celebes. — My friend Dr. S. J. Hickson, of Downing 

 College, Cambridge, very kindly brought me a well- 

 preserved specimen of a mature Chaerocampoid larva 

 from Celebes. The larva is represented in Plate X., 

 fig. 3 (natural size), and is extremely interesting in 

 uniting the characteristics of several genera of the 

 Sphingidce. In the first place it possesses the terri- 

 fying eye-like marks on the first abdominal segment, 

 although there is no trace of similar markings on any 

 of the other segments. In the genus Chcerocampa 

 (and in closely allied genera) the chief terrifying marks 

 are upon the same segment, but there are generally 

 other smaller marks on the second abdominal and 

 sometimes also on the third thoracic segments, while in 

 many species traces of the marks are repeated on 

 abdominal segments 3 — 8. The marking itself consists 

 of a small and narrow black " ground area," a normal 

 white "mirror," and an intensely black "nucleus," 

 within which again are some minute white markings. 

 The only other larva I can find described with but a single 

 terrifying mark (similarly placed) is Pergesa mongoliana 

 (A. Gr. Butler, Trans. Zool. Soc, vol. ix., part x., 1876). 

 It appears probable that a single pair of such markings, 



