80 JOURNAL OF ENTOMOLOGY AND ZOOLOGY 



Crawii Coq.— (Pigs. 7, 12, 13, Table V). Fig. 12 .shows the 

 first cerari. The wax pores are few and scattered. The 

 niiral)er of conical setae varies from four to seven, usually more 

 than four; the second and third cerari have 4-8 conical setae, 

 usually more than four ; the fourth cerari has 5-8 conical setae ; 

 the sixth cerari has 5-7 conical setfe; the seventh cerari 4-7 

 conical sette; the eighth cerari has 1-4 conical setse, usually 2-3. 

 The cerari caudad of the eighth and to the seventeenth usually 

 have 7-8 conical setae. The anal cerari has from 11-19 conical 

 setae, usually 13-15. 



Fig. 13 shows an anal cerari. The bases of the conical setae are 

 seen to be but little larger than in the first cerari. The number 

 of wax pores is large, but the arrangement is scattering. The 

 space covered by the cerari is much greater than in any other 

 species studied, usually covering most of the dorsum of the anal 

 lobe. Five robust ordinary setae of the first cerari are 4-5 

 microns in diameter and 23-25 microns long. The conical setae 

 of the anal cerari are 5-6 microns in diameter and 28-30 microns 

 long. The most striking character of this species is the large 

 number of conical setae in the cerari. 



The above discussion shows that the cerari as specific charac- 

 ters are very promising. The conical setae are easily seen and 

 counted in ordinary mounts. When the seta is broken off the 

 base can easily be distinguished. The groujiing of the wax pores 

 is a distinctive specific character. It is believed that the charac- 

 ter of the cerari will be very useful in the formation of analytical 

 tables and the identification of .species. 



Berkeley, California, March, 1913. 



