Gr. H. F. Nutt all 
317 
Ixodes analis Chilton 1904. 
Figs. 18-19. 
Lit. and Icon.: Chilton, C., 1904, pp. 201-202, Pi. X, figs. 1-6. 
The description of this species was not included in Ticks, Part n., 
the publication by Professor Chilton having unfortunately been over¬ 
looked. The tick was described by Chilton in 1904 from specimens 
found on Anas superciliosa, the grey duck, and received by him in May, 
1903, from Mr W. W. Smith of Ashburton. The author’s description 
and figures, whilst insufficient for identification, give certain precise 
data: Ixodes ?, size, when replete, 10 x 5 mm.; palpal article 2 twice 
as long as 3, article 1 massive; hypostome with dentition 2|2, as long 
as the palps. Smaller specimens, measuring 3 x T5 mm., similar to 
the female, were thought by Chilton to be males. Mr Smith reported 
of their colour when alive: “Females dull-green, males brownish 
green.” (It is clear that the supposed males were nymphs.) 
Through the courtesy of Professor Chilton I received, in 1913, 
(1) a perfect ? co-type on loan from the Canterbury Museum for purposes 
of examination, (2) parts of a second $ (type from which his figures 
were drawn) mounted in balsam, and also, in 1912, the rest of this 
female together with (3) a nymph preserved in alcohol. 
These specimens agree with 2 ?s since received (1914) from 
Professor Chilton, one of which is herein figured by me. The scutum 
is mutilated in the type, but as also in the co-type, it is more bluntly 
rounded posteriorly than in my figure and the shallow cervical grooves 
attain or nearly attain the posterior borders; the porose areas are 
rounded instead of somewhat angular; the distal pseudo-article of 
tarsus 4 is somewhat longer. All of these differences are slight and 
merely individual and but for them my figure agrees with the appearance 
of the co-type and what can be made out from the remains of the type. 
If the types of the purely nominal species 7. apteridis Masked 1897 
(from Apteryx mantelli, inland from Mt Egmont, New Zealand; Masked, 
p. 291) and I. aptericola Masked 1897 (from Apteryx australis , Dusky 
Sound, New Zealand; Masked, p. 292, PI. XVII, figs. 7-8) should 
ever be found, it is reasonable to suppose that I. anatis Chilton and 
I. aptericola Masked will fad into the synonymy of I. apteridis Masked. 
Prof. Chilton informs me, however, that there is little hope of recovering 
the types of Masked’s species here referred to. (The last remark also 
holds for 7. mashelli Kirk 1887, from the albatross, Diomedea exulans, 
