1918.1 225 



nigro-plceous, the latter with a hroad oblique fascia before the middle 

 (not reaching the suture), and a large spot on the disc towards the apex, 

 flavous. S. alhomaculatus Bourg., from Cambodia-, may be another 

 variety of tlie same species ? 



{To he contimied.) o4^ 



On Gyyiarchy in Cohoptera. — I wa.g very much interested in Dr. Sharp's 

 note on this subject {antea p. lo4); more especiall}' as I have been working at 

 the physiology of sex, in connection with ants, for some time past. In the 

 case of the latter insects, where under certain circumstances we have now 

 shown that workers will la}' parthenogenetic eggs which produce workers, one 

 might well repeat Dr. Sharp's question, "Why, then, do males exist?" 

 The following Coleoptera may be added to Dr. Sharp's list : — 



Malthodus atomus Th. — I only know of three males of this beetle : one 

 taken by Dr. Power at AVicken Fen, one by the late E. A. Waterhouse at 

 AVokingham, and one by Commander Wallcer at Wytham I'ark, Berks. 

 I have swept the species freely at Dulwich Wood, Wimbledon Common, 

 TJiclimond Park, Wicken Fen, the Isle of Wight^ etc., but have never taken 

 a male. 



Tillus elonyatiis L. — The male of this insect is considered to be more rare 

 than the female. I have taken the species at Oakham (Rutland), Owston 

 Wood (Leicestershire), Bradfield, Streatley, Oxford district, Epping Forest, 

 and frequently in the New Forest ; but I only once found tlie male, when it 

 occurred in some numbers with females on a dead tree in the Xew Forest. 



Other species in which I have found the male mncli less common than 

 the female are : Anthocomus terminatus INIen., Cj'yptocephalun sexpunctatus L., 

 Cteniopus sidphureus L., and Xylehorus disjjar F. ; these latter insects, how- 

 ever, may represent only my individual experience. — Hoeace Do^'isthorpe, 

 19 Ilazlewell Uoad, Putney Hill, S.W. 15. 



\_Malthinus haltecdus Suffr. is another insect of which the cT is extremely 

 rare.— G. C. C] 



Hammaticherus lacordairei Gahan at Swansea. — Several examples of this 

 fine Longicorn were picked up alive in Swansea docks earlier in the War. It 

 was ascertained that they came from a cargo of South American logwood on 

 board a German prize which was brought into the docks. I am much indebted 

 to Dr. Gahan for identifyin<< the species. — J. P. le B. Tomlin, Lakefoot, 

 Hamilton Road, Reading: Sept. 18M, 1918. 



Early appearance of Macroglossa stellatarum. — On March 21st I saw in 

 the public park here in the morning, about eleven o'clock (new time\ a speci- 

 men of Macroglossa stellatarum — quite perfect. I had a good opportunity of 

 observation, as it attracted my attention by its usual flight, and then settled 

 on a piece of earth on the border, and rested there for some minutes, and then 

 ••ook tiight to another quarter. I have never experienced this before, and a 



