Swiss Diurnal Lepidoptera. 205 



Guilding had thus noted : — Hostile parasites may doubtless 

 take an active part in influencing the migration of fishes. In 

 the West Indies, the parasitic Crustacea are exceedingly 

 numerous ; and must form most distressing companions to the 

 creatures which support them, on their bodies, without the 

 power of removal. — While the £chineis (itself a parasite) 

 clings by its occipital apparatus to the roving shark, his own 

 skin affords a resting-place for parasitic crabs ; and many of 

 our eatable species of fish are rarely taken without one or 

 more of these troublesome attendants. — L. Guilding. St. 

 Vincent, May ]. 1830.] 



Art. IV. A List of Species of Diurnal Lepiddpiera known to 

 occur in Sivitzerland, voith Notices of the Localities in which they 

 have been observed. By P. J. Brown, Esq. 



I have not been unmindful of the wish of your excellent cor- 

 respondent, Mr. Bree, expressed to me when in England last 

 spring [1834, and in VII. 524.], that I should furnish you with 

 a list of the Swiss papilios ; but unforeseen impediments have 

 hitherto prevented my compliance with his desire. My return 

 to this country was retarded until the busiest plant-drying, fly- 

 catching period of the year. When the less inviting appear- 

 ance of the fields sent me home to the brain-cudgeling occu- 

 pation of extricating from their chaos the " rudisindigestaque 

 moles" on one side, and the "confusa sine ordine moles*" on 

 the other, which had been accumulating during brighter days, 

 I endeavoured to acquit myself of the task to the best of my 

 power ; but was unwilling to forward the result of my enquiry 

 without first submitting it to some one well qualified to detect 

 its omissions : of the two most competent persons, one has, 

 in the meantime, been removed by death ; and the other, 

 having been confined to his room by illness, was unable 

 during a month to reply to my queries. It has appeared to 

 me that the most satisfactory method would be to take as a 

 guide the list published, in 1817 and 1818, by the late Pro- 

 fessor Meisner, in his Naturwissensckajilicher Anzeiger ; in- 

 serting in their proper places such few additional species as I 

 have been able to learn have been since discovered. I do not 

 present this as an exact translation of the professor's list, but 



* Having borrowed a few words from Ovid which are not in Johnson, 

 I must comply with the orders on your wrappers, by explaining them : 

 they mean two huge messes of hodge podge, and precious messes they are 

 in general. The word mole is in Johnson, but his moles are quite different 

 things from Ovid's. 



