ORNITHODOROS.—AMBLYOMMA, 49 
ORNITHODOROS, Koch. 
1. Ornithodorus coriaceus. 
Ornithodoros coriaceus, C. L. Koch, Arch. f. Naturg. x. Bd. 1, p. 219, no. 1; Ubers. d. Arachniden- 
. syst. Heft iv. pp. 12, 31, t. 1. figg. 2, 3. 
Hab. Mexico (teste Koch). 
Berlese, in his ‘ Acari Austro-Americani,’ p. 23, mentions Ornithodoros coriaceus, 
Koch, from Rio Apa (Paraguay), but without entering into details. 
IXODES, C. L. Koch. 
1. Ixodes boarum. 
Ixodes boarum, Stoll, anted, p. 18, Tab. XIII. figg. 1-le, and Tab. XIV. fig. 4. 
Hab. GuateMaa, Retalhuleu. 
2. Ixodes pygmeus. 
Ixodes pygmeus, C. Lu. Koch, Arch. f. Naturg. x. Bd. 1, p. 233, no. 18; Ubers. d. Arachnidensyst. 
Heft iv. pp. 22, 107, and t. 22. figg. 81a, b (2). 
Hab. Mexico.—Braziu (teste C. L. Koch). 
AMBLYOMMA, C. L. Koch. 
1. Amblyomma mixtum. 
Amblyomma mixtum, C. li. Koch, Arch. f. Naturg. x. Bd. 1, p. 227, no. 17; Ubers. d. Arachniden- 
syst. Heft iv. pp. 74, 75, t. 13. figg. 47 (¢), 48 (2); Stoll, anted, p. 19, Tab. XII. 
figg. 1-1i (¢), 2-25(¢). 
Hab. Mexico (teste C. L. Koch); Guatemaua, Retalhuleu, Antigua; Nicaragua, 
Chontales; Costa Rica, Caché. 
2. Amblyomma dissimile. 
Amblyomma dissimile, C. L. Koch, Arch. f. Naturg. x. Bd. 1, p. 225, no. 10 (8 2); Ubers. d. 
Arachnidensyst. Heft iv. pp. 17, 64, 66, t. 12. figg. 837 (¢), 88 (9). 
Hab. Mexico (teste Koch). 
3. Amblyomma tenellum. 
Amblyomma tenellum, C. L. Koch, Arch. £. Naturg. x. Bd. 1, p. 227, no. 16 (¢); Ubers. a. 
Arachnidensyst. Heft iv. pp. 17, 78, 79, t. 14. fig. 51 (3). 
Hab. Mexico (teste Koch). 
4, Amblyomma ovale. 
Amblyomma ovale, C. Li. Koch, Arch. f. Naturg. x. Bd. 1, p. 227, no. 20; Ubers. d. Arachniden- 
syst. Heft iv. pp. 18, 79, 80, t. 14. fig. 52 (¢). 
Hab. Mexico (teste Koch). 
BIOL. CENTR.-AMER., Arachn. Acar., January 1893. H* 
