356 APHANIPTERA. 



to the negative evidence, and the Jigger be put down as one of 

 the worst of insect pests. 



Although I shall be very glad if some other member of this 

 Society will take up this subject, I must point out that it has its 

 drawbacks. During the winter I could obtain very few specimens, 

 but with the arrival of the warm weather the fleas arrived, mostly 

 the dog-flea, by hand and by Parcel Post. I now look on any 

 unknown small box with considerable suspicion, and open it with 

 as much care as a policeman examining a box which he thinks 

 may contain an infernal machine. 



Besides a number of slides, the following photographs were 

 shown to the members : — 



Pulex in-itans^ man, 



P. fasdatus, rat. 



P. sciurorwn, squirrel. 



P. avium, sand martin. 



P. serraticeps, cat. 



P. erinacet, hedgehog and dog. 



P. goniocephahiSy rabbit. 



Typhlopsylla assimilis, mole. 



Ditto ditto turkey. 



P. avium, $ , mouth organs. Mandibles like long fine bristles. 



X lOO. 



Ditto, Mandibles, labium, with 5-jointed palpi; Maxilla, with 



palpus, X 100. 

 P. erinacei (from dog), mouth-organs complete, tongue serrated 



as well as mandible, x 100. 

 P. goniocephalusy $, mandible serrated, x 200. 

 Ditto, antenna in groove behind eye, x 100. 

 Ditto, I St ventral plate, or rudimentary wing, showing spiracle, 



X 50. 

 Ditto, one of the dorsal plates, x 50. 

 P. avium, portion of head with antennae, showing articulations, 



X 200. 

 P. goniocephalus, $ , antenna, x 200. 

 P. avium, $ , portion of head with antenna, x 200. 

 P, erinacei, antenna, x 200. 



