202 THE ENTOMOLOGIST. 



varies in ground colour from bright green to dark green, dark 

 brown, blackish green, or even black. Dilophonota ello, larva 

 varies from green to brown. Spilosoma luhricipeda, larva ; 

 a. pallescens, whitish, with grey hairs ; b. rufescens, yellowish, 

 with red-brown hairs ; the grey variety exists in the proportion 

 of four to one red (E. Birchall, Entom. xi. 77). Hyphantria 

 cunea, Prof. Eiley (Bull. 10, U. S. Dept. Agr., Ent. Div., 1887) 

 figures varieties of the Jarva of this destructive species, and says, 

 " Close observations have failed to show that different food 

 produces changes in the coloration; in fact, nearly all the 

 various colour-varieties may be found upon the same tree ; the 

 fall generation is, however, on the whole, darker, with browner 

 hairs, than the spring generation." Cucullia chamomillce, Mr. 

 Tugwell has recorded varieties ranging from white to pink. 

 Catocala polygama, four forms of larva are described by W. 

 Saunders (Can. Ent., 1876, p. 74). Eupithecia ; the remarkable 

 variation in the larvae of this genus can be seen by reference to 

 Newman's 'British Moths,' pp. 120-153. Finally, it is to be 

 noted that sometimes very different-looking larvae will produce 

 nearly similar moths, a phenomenon observed in Acronycta and 

 Datana. Mr. A. B. Grote has some interesting remarks on this 

 subject, * Can. Ent.,' 1877, p. 209, where he says, " There is proof 

 in the excessive variation in the larvae of a genus where the 

 adults are remarkably uniform in colour and ornamentation, 

 that the larva submits to independent and wide modification 

 from the circumstances of its environment." 



Errata, &c. — P. 55, line 18 from top, for "Entom. x." read 

 " Entom. XX." Cirrhccdia x. obscura (p. 55) and Acronycta t.fasciata (p. 99) 

 appear to be practically identical with the varieties unicolor, Stgr., and 

 v'mja, Tutt, respectively. Mr. W. H. Edwards informs me that the black 

 form of Lycccna comyntas (p. 128) is not in the male, the black male 

 pseudaryiolus being the only such case known to him. Dr. John Hamilton 

 finds that the dark forms of Ips fasciatus (p. 129) are not coufiued to the 

 vernal brood, as was supposed.* 



(To be continued.) 



DEILEPHILA GALII, with EEMARKS ON FORCING PUP^E. 



By J. Arkle. 



" By all means force all your galii pupse." Such was the 

 unanimous advice which followed my inquiries on the point. To 

 the fortunate possessor of a hothouse this is easy enough ; but 

 to collectors like myself, who are less enviously placed, the 



* Dr. Hamilton writes, ^^ Ips fasciatus varies in colour, from all black on the 

 elytra, to nearly all yellow. About half a dozen of the forms have received names. 

 .... All hatched from the same batch of eggs, perhaps " (in litt., April 24, 1889). 



