G. H. F. Nuttall 
297 
surface of the base; (Ventral aspect) auriculae well marked but basis 
capituli narrower posteriorly than in the $. 
Described from a $ found on the collector's person at Rook Island, 
Friedrich Wilhelmshaven, German New Guinea, ix. 1913 and several 
unfed o’s found on a Kingfisher, Manus, Admiralty Islands, ix.-x. 1913 
by Mr A. F. Eichhorn after whom the species is named and to whom I 
am indebted for the specimens. Considering the part of the world they 
come from and the remarkable agreement in structure between the 
$ and o I attribute them to one species although they were collected 
from different hosts. The only species hitherto known to possess circular 
anal grooves is I. rasus Neumann, 1899, from Africa, which differs 
from 7. eichhorni in numerous respects, the coxae being unarmed and 
trenchant, etc. 
The types (N. 2672, 2675) are in Cambridge. 
Ixodes victoriensis n. sp. 
Fig. 3. 
Male : Unknown. 
Female (Fig. 3): Hard parts amber yellow, except spurs, cornua, 
etc., which are chestnut. Body (gorged) 8-5 x 5 mm. ( Dorsal aspect) 
Scutum about as broad as long, T25 x 1*31 to 1*2 x T36 mm., with 
moderate emargination, scapular angles rounded at the tips; cervical 
grooves broad and distinct, almost straight, but slightly divergent 
behind and attaining the posterior border; medium-sized punctations 
evenly distributed. Capitulum remarkable, with short broad base, 
large blunt incurved cornua, arising from ridges which, antero-laterally, 
bound the depressed area occupied by the porose areas which are of 
irregular form, far apart; the anterior portion of base forming a concave 
ridge. Palps with article 1 very large, hollowed inwardly, curving about 
the chelicerae, with pointed postero-external slightly incurved process; 
articles 2-3 fused, very broad distally and curved dorsally (see profile 
in Fig. 3); ( Ventral aspect ) article 1 protruding backward and outward 
with retrograde pointed process, with a flange protruding ventrally 
and nearly parallel to hypostome; basis capituli narrowing posteriorly, 
small blunt auriculae; hypostome arising from a broad base and 
narrowing greatly to where the first basal teeth occur, very broad 
distally, dentition 5|5 then 4|4 very fine pointed teeth, about 12 per 
outer file. Venter: vulva facing coxa III (in gorged specimens); anal 
