1885. J 231 



[I am not disposed to question the correctness o£ the conclusions 

 at which Mr. Edwards has arrived respecting my Dicr. citrinella and 

 D. mollicula, supported as they are by the identity of structure in the 

 ^ genitalia ; for my identification was founded mainly upon the 

 difference in the apical cells of the elytra, which was very apparent in 

 the examples I then possessed, but in some taken since I have noticed 

 the' existence of the intermediate gradation of neuration mentioned. — 

 J. W. D.] ==_==___========= 



Occurrence of Andrena nigrocenea and Nomada alternata in December. — On 

 December 30tli, 1884, I made a tour of inspection of the various banks in this 

 neighbourhood where I find Att/pus piceus in plenty. Many of the " tubes," or 

 nests having been frequently examined and changes noted dovrn since April 13th, 

 1882, the date when first I turned up this noble spider in Woking. 



On touching the loose sand close to one of the tubes, some of it was displaced, 

 and fell down. I was surprised to notice an Andrena walk out of it, and after 

 shaking the sand from his wings, he attempted to fly away, but was quickly boxed, 

 and before I had time to pocket it, a gay Nomada appeared from the loose sand, and 

 succeeded in flying a few inches before I captured it. The day had been beautifully 

 fine and spring-like, the night following we had a sharp frost, and on examining the 

 pot, into which I had put the bees, found both had disappeared under the sand ; the 

 Nomada came up again in two or three days, quietly resting on some damp moss 

 until January 21st, when I took it out, and the next day I found the Andrena four 

 inches under the sand, it was rather sluggish at first, but soon revived, attempting to 

 fly ! I sent both specimens to Mr. E. Saunders, who has kindly named them for me : 

 $ Andrena nigrocenea, and ? Nomada alternata. — F. Enock, Woking : Feb., 1885. 



Spanish insects and stridulating species. — The past summer I collected numerous 

 insects, more especially Lepidoptera, in north-western Spain. I had drawn up a list 

 of the latter indeed for publication, but as it appeared a little long, I thought it would 

 be better to incorporate it in an account of my summer rambles I am working at for 

 the press. I might, however, mention that melanism was frequent in Asturian 

 insects, the Orthoptera in the mountains being as a rule blackish compared with the 

 same species from the corn fields in the plains of Leon and Castille. The large white 

 Polyommatus Corydon from the same limestone plains is also quite a feature in 

 Spanish entomology, it is, it seems to me, even larger and whiter than in the 

 Apennines ; when I saw it flying I took it for L. sinapis; in the Asturias, however, 

 it has its usual appearance. I gave what attention I could to the stridulation of 

 insects. Crioceris 12-punctata, L., kindly determined for me by Mr. Waterhouse, I 

 found to stridulate as the rest of the genus, by rubbing the apex of its abdomen 

 against the tips of the elytra. I had no idea that this was a British insect, but it 

 appears to be recognised as such by Stephens, who gives Bath and Bristol as localities. 

 I rather suspect that both it and C. merdigera are imported into the country, and not 

 natives so to speak. I do not think that the C. asparagi, L. stridulates as these 

 other two which compose the genus Lenta of Dr. Sharp. Another stridulating insect 



