re the chelipeds should be situated, but they are probably constric- 
s, due to the downward curvature of the rostrum. The organs 
1 which the leaves are punctured are two long, slender chelicerjp 
ph lie in the hollow snout, 'and extend beyond the tip of the 
ar when in use. The lower lip is a triangular body attached 
eath and at the base of the snout, covering the beginning of the 
ptudinal slit. Briosi says that it may be extended forward so as 
lose the slit when the snout is applied to the leaves for the pur- 
3 of sucking the sap. The adult Phytoptus has only four lec/s. 
h two or three exceptions, adult mites of other kinds have ei^ht 
, and their larvae never have less than six. Phytoptus is thuslm 
I option to the rule, in this respect. 
he developed limbs consist of five articles, with an appearance 
wo others; the first is stout and extends but little beyond the 
. At its extremity is a fold, which resembles a short article be- 
m the first and second. The second is longest and stoutest of 
In the first pair of legs, a short hair arises from the under side 
his article, and in both pairs a long hair arises at its apex above 
extends on over the succeeding articles. Then follow two arti- 
| the second (distal) of which bears a constriction at about its 
Idle, which gives it the appearance of two segments. Prom the 
article a long hair arises and extends forward over the tarsus, 
tarsus consists of a curved, cylindrical claw, slightly swollen at 
ip. Beneath it is the so-called feather-like organ, consisting of 
snder axis with a series of barbs arising from each side. The 
abdomen is transversely striate, the regular stride separating 
jiurface into narrow rings, which completely encircle the body. 
j.*e rings or interspaces are covered with a series of minute tu- 
les, only visible when highly magnified. The extremity of the ab- 
en is a sucker, which can be freely protracted and withdrawn. 
jie genital opening is situated just behind the margin of the 
! alothorax on the under side, and is covered by a shield-shaped 
A few slender hairs arise from the abdomen, and as 
i are quite constant in position, should be mentioned. There are 
:3 pairs of these above and three below. The first of the upper 
3 is long, and arises at the margin of the cephalothorax; the 
nd pair is the longest of all, being in some species a third of 
whole length, arises from the last interspace, and extends 
sriorily. Between them is the shortest pair of all, (frequently 
Rooked). In a species having 80 striae I find the most anterior 
le ventral pairs of hairs twelve, and the median twenty-four 
3 behind the cephalothorax, and the third pair six striae in ad- 
e of the sucker. 
ie internal anatomy of Phytoptus needs further study. The 
.entary canal has not yet been traced through all its course, 
ovary, when distended with ova, occupies nearly all of the ab- 
nal cavity, extending from the opening near the margin of the 
I alothorax backwards nearly to the tip of the abdomen. The 
pre comparatively very large, and lie in a single series of about 
I Those farthest forward, and thus nearest the genital opening, 
i ilways largest and farthest developed. The anterior two or three 
i distinctly the granular character of their contents, and differ 
j from eggs which have been laid.. Towards the hind end 
