Until other insects allied to Strepsiptera be found, its natural 

 affinities must remain very doubtful, from the imperfect and 

 peculiar structure of the mouth ; and there is not a single 

 Order perhaps that might not be assumed to be related to it 

 by analogy. As I have taken the greatest pains with the dis- 

 sections, it is hoped they will require no comment in this 

 place : after therefore observing that I consider the third joint 

 of the antennae merely eccentric, — that it is doubtful whether 

 the horny substances are mandibles or maxillae, since I be- 

 lieve the palpi to be biarticulate ; and that it has been my 

 good fortune to -prove that the appendages are anterior wings 

 or elytra, — -I shall pass on to give Mr. Dale's valuable facts 

 relating to our insects. 



" Every specimen of Andrena harbilabrh I have seen this 

 year, from the 27th April to the 4th June, have contained 

 larvae, pupae, or exuviae of Stylops, from one to three in each. 

 On the 5th May I picked one out with a pin, on the seventh 

 another rather immature, and caught one flying in the hot 

 sun-shine over a quickset hedge in the garden ; it looked milk- 

 white on the wing, with a jet black body, and totally unlike 

 any thing else ; it flew with an undulating or vacillating motion 

 amongst the young shoots, and I could not catch it till it settled 

 on one, when it ran up and down, its wings in motion, and 

 making a considerable buzz or hum nearly as loud as a Sesia : 

 it twisted about its rather long tail, and turned it up like a 

 Staphylinus. 1 put it under a glass and placed it in the sun ; 

 it became quite furious in its confinement, and never ceased 

 running about for two hours. The elytra or processes were 

 kept in quick vibration, as well as the wings ; it buzzed against 

 the sides of the glass, with its head touching it, and tumbled 

 about on its back. 



" By putting two bees {A. lahialis) under a glass in the sun, 

 two Stylops were produced ; the bees seemed uneasy and went 

 up towards them, but evidently with caution, as if to fight, 

 and moving their antenna? towards them retreated. I once 

 thought the bee attempted to seize it; but the oddest thing 

 was to see the Stylops get on the body of the bee and ride 

 about, the latter using every effort to throw his rider. A large 

 hole is left in the tail of tlie bee when the Stylops escapes, 

 which closes up after a time. I have found five species of 

 Andrenae infested." 



The specimen figured was bred from A?idrena labialis, and 

 presented to me, together with others, for dissection, by my 

 esteemed friend J. C. Dale, Esq., in honour of whom I have 

 named the species. The minuteness of the second joint of 

 the antennae, the small size of the second joint of the palpi, 

 and the differently formed wings, are sufficient characters to 

 distinguish it from any species hitherto described and figured. 



