70 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 
nearer the caudal* end than the cephalic end of the ring, is the 
anal aperture. The inner circle of pores is closed at the 
forward end and bulges out between the two anterior sete 
forming a marked concavity. Posterior to the caudal pair of 
sete the inner circle of pores continues on each side for about 
one-third of the are of the circle bounded by these two sete. 
The pores of this circle are irregular in shape and size and are 
large. Near or between the caudal and median sete there are 
usually one or more elongate pores which project in in a 
striking manner from the circle and which have been given 
the name of denticulate pores. These denticulate pores may or 
may not indent the membrane of the orifice. Outside of this 
inner circle of pores and only very slightly separated from 
them are the six sete of the anal ring. Outside these sete and 
separated by a very narrow margin is the second circle of wax 
pores or the outer circle of pores. These may be limited 
cephalad and caudad by the anterior and posterior pairs of 
sete or may extend a very short distance beyond them. These 
pores have a different appearance from the inner circle. They 
are more regular in shape and arrangement and smaller in size 
than are the pores of the inner circle. Also they usually have 
the peculiar appearance of having a light or dark spot in them 
which undoubtedly is due to refraction. 
This in general is a generic description of the anal ring of 
Pseudococcus. The following is a discussion of the specific 
variations of this ring. 
Longispmus Targ.—(Fig. 5). The caudal pair of sete is 
nearer the median pair than is the cephalic pair. The outer 
cirele of pores is limited by the caudal and cephalic pairs of 
sete and is a single row for its entire length. Projecting from 
the inner circle of pores at the caudal sete are two prominent 
denticulate pores which indent the membrane of the anal orifice. 
*The terminology of cephalic and caudal for the ends of the ring is largely one 
of convenience. The ring is usually on the apex of the abdomen and so the ends 
would really be dorsal and ventral. However, in the majority of Coccide the anal 
ring is dorsal. According to this terminology the anal ring is assumed to be dorsal 
also. Thus the closed end of the ring which is usually dorsad of the open end is 
here spoken of as the cephalic end of the ring. 
