GAMASIDS, 



183 



CASE appear to have the paler spots or granulations of this species. 

 The colour of A. Savignii is not mentioned in the description. 



Argas (Ornithodoros coriaceus) {Koch). 32 Enlarged sketch of ditto, 

 copied from Koch's figure. 



Koch, in his "Ubersicht," pro- 

 poses a genus under the name of 

 Ornithodoros for those species of 

 Argas that have eyes. We have 

 already pointed out the insuffi- 

 cient nature of this character, 

 and therefore hesitate to adopt 

 it. 



The present is the species on 

 which he founds it. The front 

 is a little projecting \ the colour 

 is pale yellowish brown, with vermilion spots speckled over it. 

 It is from Mexico. 



Argas (Ornithodoros) coriaceus. 

 Copied from Koch. 



No. 33. Argas (Ornithodoros) Talaje {Guer.) 

 Enlarged figure of ditto. 



-33. 



A very irritating substitute for, or rather 

 addition to the flea, in Guatemala. M. 

 Salle, the well-known French entomologist, 

 who collected largely in Central America^ 

 thus describes the annoyance caused by 

 this insect : — 



** Being at Casa Vieja de Gastoya, on 

 the road from Guatemala to Zacapa (Cen* 

 tral America), about fifteen leagues from Guatemala, the 6th of 

 May, 1847, I was awakened several times out of a profound sleep 

 by atrocious itching on the hands and face, and my companion, 

 M. Jules, suffered still more than I did. At three o'clock, irritated 

 by these painful bites, I lighted a candle, and found that I had 



Argas (Ornithodoros) talage. 

 Copied from Gutrin. 



