84 Mr. J. W. Douglas on a new species 



which, after giving an account of the way in which he 

 saw the young ones come out from the body of the 

 mother, he says : — " After their death, measured longi- 

 tudinally and transversely, I found the body was '024 in., 

 so that it was nearly a circular disk, presenting, how- 

 ever, a number of elevations, depressions, and irregu- 

 larities, which possibly resulted from drying : the colour 

 was pitchy red, but attached to the dorsal envelope in 

 several places, and without any semblance of regularity, 

 were a number of minute flattened bodies, perfectly 

 white, and having the appearance of little flakes of 

 snow ; these are so numerous as to give the little 

 creatures quite a dusty appearance." 



MM. Amyot and Serville (Hemipt., p. 622) quote the 

 following original observations by I'Abbe d'Orthez, say- 

 ing : — " L'abbe d'Orthez a trouve dans un seul de ces 

 sacs (marsupium) quatre-vingt-cinq petits eclos, tons 

 reconverts de leurs lames farineuses, et une quinzaine 



d'oeufs qui petillaient sous I'ongle qui les ecrasait 



La premiere mue arrive environ un mois apres leur 

 sortie ; I'insecte sort de son fourreau par une ouverture 

 qui se fait sur la partie anterieure du dos ; il est alors 

 tout iiu, son corps et ses pattes couleur de chair ; le 

 meme jour, on le voit se recouvrir de nouvelles lames, 

 qui, trois ou quatre jours apres, ont pris un accroissement 

 considerable ; et alors les pattes deviennent noiratres." 

 Speaking also of a female which had been purposely de- 

 prived of its scales, the Abbe says: — " L'insecte, ainsi 

 depouille, ne parait pas en souffrir ; il court et mange 

 comme a I'orclinaire. Au bout de quelques jours, il se 

 trouve reconvert d'une poussiere blanche qui augmente 

 pen a pen et finit par prendre le meme arrangement 

 qu'auparavant. Cependant ceux qui ont ete eleves dans 

 des boites n'acquierent jamais une regularity aussi 

 parfaite." 



The deduction from all these observations is that the 

 larva, in all the species of OriJiezia, is bare when 

 excluded from the egg-shell ; that it is also bare at the 

 occurrence of each successive moult ; and that in all 

 these cases it is quickly covered by the deposit of waxy 

 secretion, which more or less rapidly increases and 

 assumes the form and disposition of the lamination 

 characteristic of its species, which in the female con- 

 tinue during the duration of the life of the insect, even 

 after the marsupium is formed, and in the male until the 

 pupa is formed beneath the integument. 



