76 f-^P"!' 



and the bee was extremely common ; but elsewhere in that district I 

 took none stjlopized. Since then I have only come across one or two 

 parasitized examples, in Somerset and Kent. I regret that I no longer 

 possess specimens of other Halicti that I have found st3'lopized, 

 e.g., II. xantliopus. 



I should be very glad to receive stylopized bees from any Hymeno- 

 pterist who does not want them, in order to continue my studies of the 

 S'l/Iojn'dae. As mere specimens in a collection, stylopized bees are not 

 of much value, now that the external features of stj'lopization have been 

 so closely studied by Perez and others. There is, however, need for a 

 further stud}^ of the internal organs of such bees, but this cannot be 

 done except from fresh specimens, or those preserved in liquid. For 

 systematic study the extraction of large numbers of indi\4duals and 

 their proper preparation for microscopic examination is necessary in the 

 case of female parasites. In conclusion it should be stated that the 

 descriptions of the so-called female are made not from the female, but 

 from the puparium of the female. It is easy enough for anyone with 

 ordinary capacity for dissecting work to extract the true $ from her 

 puparium, 



EXPLANATION OF PLATE I, 



Fig. 1. Head of Stylops aterrima viewed from the front to show the ap- 

 pendages, drawn from a specimen in alcohol. 



The antennal joints (except the small i^nd) are numbered 1-6 ; the 

 first and second joints of the so-called maxillae of some describers, 

 the palpi of others, are lettered a and b. The narrow pointed 

 mandibles overlie the suture between these joints. 



1 a, antennal joints from Newport's type of S. ateiTima. 



1 b, aedeagus of the same specimen. Though broken at the base 

 the parts are connected by the duct. 



„ 2. Two views of the antenna of S. spencii. 



2 a, aedeagus of the same. 

 „ 3. Antenna of S. Simaculatae. 



3 ff, aedeagus of the same. 

 „ 4. Antenna of S. nevinsoni. 



4 a, aedeagus of the same. 

 ,, 5. Antenna of S. hammella. 



5 a, aedeagus of the same. 

 „ 6. Antenna of S. melittae. 



6 a, two views of aedeagus of the same, 

 „ 7. Antenna of S. thicaitei. 



7 a, aedeagus of the same, 



Paignton, 



January.^ 1918, 



