APPENDIX. 533 



arrangement of these tiny creatures * ; but it is to be 

 regretted that, with respect to species, he has merely 

 given a list of names, and most frequently even without 

 reference to any description or figure of any other 

 author. The posthumous work of Lyonet, published 

 by De Haanf, contains descriptions, accompanied by 

 pretty good, uncoloured figures of a few of these para- 

 sites ; and Panzer J has given some tolerable coloured 

 ones of some others; but these collectively amount to a 

 very small proportion of the existing species ; and, as to 

 the figures to be found in the works of the older authors, 

 they are in general almost useless. Very lately a 

 valuable paper on three species of Philopteri, found on 

 the albatross (Diomedca exulans, Linn.), has been pub- 

 lished by M. Leon Dufour, in the Annales de la Societe 

 Entomologique de France. § 



In the other Orders, the catalogue of arctic Insects, 

 collected in the late expedition, is very small, contain- 

 ing, of perfect insects, only one species respectively of 

 the Coleopterous, Orthopterous, and Hymenopterous 

 Orders ; together with one larva of some individual 

 belonging to the Coleoptera : to these are to be 

 added five species of the Class Arachnida, and one 

 Intestinal Worm. But, if the present contribution 

 to this branch of natural history be inconsiderable, 

 we must remember under what circumstances it was 

 formed ; and that it is not the extent of the gift, but 



# Die Familien und Gattungen der Thierinsekten : — Ma- 

 gazin der Entomologie (von Germar und Zincken), vol. iii. 

 p. 261. 



f Recherches sur l'Anatomie, et les Metamorphoses de 

 differentes Especes d'Insectes. Paris, 1832. 



J Deutschlands Insekten. 



§ Vol. iv. p. 669. pi. 21. fig. 1—4. 



M M 3 



