58 NORTH AMERICAN FEVER TICK AND OTHER SPECIES. 
taken on dogs, though as yet not a single nymph. This suggests the 
remote possibility that the species may pass from the larval to the 
adult stage at a single molt. 
m l LPTURED TICK. 
/ -/-A .•>• sculptus Neumann.) 
This species was described in 1904 from a female specimen taken 
with a female /. ricinus in the Santa Cruz Mountains of California. 
So far as known it had not been taken since until Mr. F. C. Pratt col- 
lected it on prairie dogs at Sherwood, Tex., November 2, 11)06. 
More extensive eollection will undoubtedly show a wider distribution 
than i- now known. 
Genus AMBLYOMMA. 
The species of the genus Aniblyomma are distinguished by the 
palpi, which are long and cylindrical. The male has the first and 
fourth coxre armed with a long spine; the female has only the first 
coxae with a spine, the others with tubercles. As far as known all the 
species drop from the host for each molt. Lounsbury has found 
Amblyomma liebr&um to be the transmitter of heart water in cattle, 
sheep, and goats, and has carefully worked out its life history. 
The genus is represented in the United States by four species — 
americanum, cajennense, maculatum, and tuberculatum. A fifth 
species, A. multijmnctum, is described by Neumann from two speci- 
mens taken on a tapir and an antelope (Dicranocc t u s furcatus) in 
"North America." These are reported as collected by Donckier. 
As no species of tapir is found north of Nicaragua it seems probable 
that A. multipunctum must have been taken from that section of 
North America. 
Table for Separating the Species of Amblyomma of the United States. 
(Adapted from Neumann. 
males. 
1. Marginal groove extending around the posterior border 2 
Marginal groove not extending around the posterior border t. tuberculatum. 
2. Coxse I bicuspid 3 
Coxae I armed with one long spine L. maculatu m. 
3. Punctations of scutum lacking from the triangular projections, flat, radiating on 
posterior half 1. caji nm nsi . 
Punctal ions distributed over entire surface of scutum A. americanum. 
i i males. 
1 . Coxse 1 bicuspid. 2 
Coxa' I armed with one very long spine I. maculatum. 
2. Scutum triangular, posterior-lateral herders nearly straight 3 
Scutum cord ii'or m. oval, or pentagonal, posterior-lateral borders convex. 
.1. tuberculatum. 
3. Eyes in iron i of anterior third of scutum 1. caji nru nse. 
\'.\ es ai phi no of or behind anterior third of scutum 1. americanum. 
