On a new genus of Ixodoidea. 
393 
scapulae = the anterior angles or “shoulders” of the scutum projecting on 
either side of the emargination and included in measurements of the 
length. 
cervical grooves = the term commonly applied to the pair of grooves 
running backward from the inner angles of the scapulae. 
lateral grooves = grooves running along the sides of the scutum in both 
sexes; they are spoken of as “complete” if they are continuous 
along the anterior border of the festoons. 
marginal grooves = grooves running along the sides of the body in the 
female. 
foveolae=t\ie “submedian dorsal porose areas” of Salmon & Stiles, 
two small spots often observable near the middle of the scutum 
in the male, posterior to the scutum in the female. 
VENTEK=the whole ventral surface of the body. 
spiracle= the “peritreme” or “stigmal plate” of some authors; we refer 
to the macula instead of to a “pore” in its centre. 
■vulva = the genital orifice of the female. 
The nomenclature employed for the other structures appearing 
on the venter: grooves, shields, anal ring, anus, etc., are those 
usually employed. 
plagues = chitinous patches on venter near festoons (see Fig. 30 B). 
Capitulum = the “rostrum,” “head” or “false head” of various authors. 
basis capituli or shortly base — the basal ring, etc., of most authors. 
It often shows a transverse elevated ridge dorsally with edge directed 
backward. The ridge may have protruding angles, the latter we 
term cornua. There may also be a ridge ventrally. When the 
length of the capitulum is given it is measured from the tip of 
the hypostome to the dorsal ridge in the median line. Where 
the dorsal ridge is absent it is similarly measured to the ventral 
ridge. When the measurement is made ventrally this is stated, 
the dorsal measurement being usually employed. The clear space 
between the porose areas of the $ capitulum is spoken of as the 
interval. 
hypostome = the “maxilla,” “ radula,” “labium,” or “ Unterkiefer ” of 
various authors. The dentition is indicated by figures on either side 
of a vertical line. Thus 3|3 means three longitudinal files of teeth 
on each half of the hypostome. 
chelicerae = the “mandibles” or “ pseudo-chelicerae ” of some authors. 
The terminology usually applied to the portions of the digit of the 
chelicerae appears to us wrong and confusing, and we prefer to 
recognize (1) an “internal article,” the latter bearing a “dorsal 
process ” which is a portion of it (not articulated), and (2) an 
“ external article ” which articulates with the internal article upon 
its outer side. 
internal article = “ median apophysis” or “immovable finger” of 
some authors. 
dorsal process = “ internal apophysis” of some authors. 
external article = u external apophysis” or “free” or “movable finger” 
of some authors. 
Legs. — We adopt the usual terminology for the parts of the leg : coxa, 
trochanter, etc., ending with the tarsi. All processes on the articles of 
the legs are termed spurs. We have not referred to the structure of the 
claws and pulvillum in our descriptions. 
N.B.— We do not consider further measurements than those mentioned 
above to be necessary in practice : viz. lengths of first article of chelicerae 
(an internal structure), hypostome, palps, legs, eyes, etc. ; but we have usually 
