46 
Psyche 
[March 
Trinidad, Grenada, Tobago, British Guiana, Peru, and 
Brazil. Neumann includes the Philippine Islands in the 
range, but I have difficulty in believing that this is cor- 
rect. This tick attacks many different cold-blooded verte- 
brates, showing no decided host preference, although being 
found perhaps most commonly on the large toad, Bufo 
marinus Linne (often erroneously referred to in the West 
Indies as the “bullfrog’'). At the snake farm of Lance- 
tilla, near Tela, Rep. of Honduras, I found the snake pen 
literally infested with A. dissimile at all stages of develop- 
ment. I was told that any snake placed in the pen would 
soon carry a few of the ticks. 
The northernmost localities of A. dissimile known to me 
in Mexico are Perez (in the State of Vera Cruz), on the 
Atlantic side (many males and females off Bufo marinus , 
collected by S. E. Meek.— Field Mus. N. H.) ; and the 
Islets of Tres Marias (opposite the State of Tepic), on the 
Pacific side (several males and one nymph, off Constrictor 
constrictor imp er at or (Daudin), from Maria Madre Isl.— 
M. C. Z.) . Robinson (1926) records the species from 
Frontera in Tabasco. 
I may use this opportunity to publish an interesting 
photograph which I owe to the courtesy of Dr. Thomas 
Barbour. It shows an Iguana rhinolopha Wiegmann bear- 
ing on the dewlap an engorged female and a male (to the 
right of the female) of A. dissimile. The host was brought 
alive from Ruatan Island, Rep. Honduras, to the Museum 
of Comparative Zoology, Cambridge, Mass., where it was 
photographed by Mr. G. Nelson. 
POSTSCRIPT 
Since my note was sent to the printer, I have found, at 
the Museum of Comparative Zoology, two females and two 
males of A. dissimile , taken by Mr. G. Nelson, in February, 
1909, from a gopher snake, Spilotes corais couperi (Hol- 
brook), at Sebastian, Indian River Co., Florida. It would 
seem therefore that this tick is by no means rare in Florida, 
but has merely been overlooked. 
