of Butterflies related to the Genus Morpho. 163 



pede ; the resemblance to the Chilognatha {Julus, L.) being effected 

 by those caterpillars with cylindrical bodies and legs short ; the 

 resemblance to the Thysanura; {Lepisma, L.) being found in 

 those caterpillars which have the body terminated in two elongated 

 points ; the resemblance to the Anoplura {Pediculus, L.) being 

 found in the larvae of Hesperia, having a large head and a body 

 terminated bluntly at its hind part, without any points or tails ; 

 and the resemblance to the Verines of MacLeay being supposed 

 to occur in the short onisciform larvae of the Lyccenidce. 



Mr. Swainson extended these analogies beyond the Annu- 

 losa, and, adopting the five divisions o( Diurna, he pointed out the 

 resemblance of the caterpillars of the Thysanuriform division, to 

 which the Morphidce are referrable, (to which, however, he adds 

 the Satyridce,) with the Gallinacece or Rasores among birds, 

 and the horned cattle, or Ungulata, among quadrupeds, which are 

 the only ones in their respective classes which have horned crests 

 or pointed appendages on their heads. So also the tails of these 

 larvae are indicated as pointing to the greatly elongated tails of 

 the peacock, pheasant, and others Gallinaceous birds, as well as 

 to the horse, which has the most beautiful tail among quadrupeds. 

 So again the most bulky quadrupeds are found among the Ungulata, 

 and the Morphos of South America are the giants among butter- 

 flies ; the largest birds also occur in the rasorial order, whilst on 

 looking at the perfect insects almost all the butterflies are distin- 

 guished by the beautiful ocellate spots on the underside of their 

 wings, just as the peacock, &c. are pre eminently ocellated in their 

 markings, " and the general structure of all those insects, even 

 those of the largest, is weak." 



To deny the existence of such resemblances as are here detailed 

 would be to shut our eyes to some of the most interesting and beau- 

 tiful harmonies of nature ; but on the other hand it seems to me 

 equally unsafe to affirm, in the present state of our knowledge of 

 the structure and transformations of insects in general, or of the 

 Lepidoptera in particular, either that the characters alluded to 

 above possess the importance here given to them, or that the rela- 

 tions resulting from their resemblance to the analogous peculiarities 

 in other tribes of animals, is of itself a sufficient proof that the 

 natural progression of the two sets of groups of animals must 

 necessarily be parallel, the arrangement of one pointing out and 

 testing the arrangement of the other by the existence of difl^erent 

 points of resemblance, such as has been indicated above. 



Now the genera which have the larvae furnished either with 

 a bicornuted head or a bifid tail are very varied, not only in the 



u2 



