408 
NEW SPECIES OF TICKS {IXODES, 
AMBLYOMMA, RIIIFICEPHALUS). 
By GEORGE H. F. NUTTALL, F.RB., 
Fellow of Magdalene College, Quick Professor of Biology, Cambridge. 
(With 7 Text-Figures.) 
The following descriptions relate to a new species of Ixodes, to a 
new variety of Ixodes loricatus, to new species of Amhlyornma and 
Rhipicephalus : 
Ixodes caledonicus n. sp. ( ? , 0 and larva), from Scotland. (961, 1142, 1200.)^ 
Ixodes loricatus var. spinosus n. var. ( $ ), from Mexico. (647.) 
Amhlyornma \-notatum n. sp. ( $ ), from Manaos, Bi’azil. (1149.) 
Rhipicephalus simpsoni n. sp. (d) ? )> from Oshogbo, West Africa. (1214.) 
(41 b, Eiit. Res. Committee.) 
Ixodes caledonicus n. sp. 
Figs. 1—3. 
Male : unknown. 
Female (gorged): body- 7'8 x 4 mm., oblong, with sides almost 
parallel, posterior border broadly rounded, covered with a few short 
white hairs. Scutum (1‘3 x 1 mm.): glossy, sub-oval, longer than broad, 
emargination slight, cervical grooves beginning as deep pits (giving the 
effect of sharp scapulae), then deep and distinct for about two-thirds the 
length, but slightly divergent and fading away toward the postero- 
* These figures refer to numbers in our collection. 
2 The capitulum is not included in our measurements of body-length, because it may 
be retracted, protruded or inclined so as to render the measurement difficult. We measure 
from a line connecting the scapular protrusions on the scutum (scapulae) to the posterior 
margin of the body. The greatest width only is given. 
The A and D alongside the figures of spiracles denote their orientation on the tick’s 
body A pointing anteriorly, I) pointing dorsally. 
