JOURNAI^ OF ENTOMOLOGY AKD ZOOLOGY 71 



This circle continues in an irregular single row eaudad of the 

 caudal setfe for the usual distance as mentioned in the general 

 description. The anterior concavity of circle is very marked, 

 the posterior lips being prominent. The concavity is formed by 

 a single row of pores for the entire distance. 



Citri Risso — (Fig. 4). The cephalic, median, and caudal pairs 

 of setfe are equidistant from each other. The outer circle is 

 limited cephalad by the anterior pair of setae. C'audad of each 

 posterior setae is a single pore belonging to the outer circle of 

 pores. Between the caudal and median setae this row is irreg- 

 ularly double for some distance. The anterior concavity of the 

 circle is not so marked as in the preceding species. The anal 

 orifice is narrower but of the same length as in the preceding 

 species. 



Craicii Coq. — (Fig. 3). The relative distance of the pairs of 

 setse from each other was apparently not constant. Good 

 mounts of this species were difficult to make because of the 

 prominence of the anal lobes. The outer circle is single for the 

 entire distance. In the inner circle the arrangement of the 

 denticulate pores varies slightly. This circle continues eaudad 

 of the posterior setfe, in a regular single row for the usual dis- 

 tance. The anterior concavity is not so marked as in either of the 

 preceding species. 



Ohscunts Essig — (Fig. 2). The caudal pair of setfe are 

 nearer the median pair than is the cephalic pair. The outer circle 

 of pores is single and is limited by the caudal and cephalic setfe. 

 It is single for the entire distance except for a single pore just 

 eaudad of the median sets. In the inner circle at the caudal setae 

 there are several denticulate pores, the cephalic one indenting 

 the membrane of the orifice. Caudad of the posterior sets the 

 circle extends in an irregular double row for the usual distance. 

 The anterior concavity is not marked, the concavity being par- 

 tially filled by pores which form an irregular double row between 

 the cephalic sets. 



Agrifoliae Essig— (Fig. 1). The anal ring is considerably 

 larger than those of the preceding species. The cephalic pair 



