176 THE ENTOMOLOGIST. 



frequently beaten from birch-bushes ; but D. stilata is certainly 

 rarer, since I have only swept it during the first half of June 

 from hazel, &c., at Monks Soham, Brandon, and Wroxham 

 Broad. Nor is the little Micronematus monogynies more plentiful 

 in the Bentley Woods and Matley Bog from the middle of May 

 to that of June ; and only one Cri/jytocamjms, which Mr. Morice 

 thinks is C. saliceti, has occurred to me at Barton Mills, Bentley 

 Woods, and Needham in Suffolk, and Calbourne in the Isle of 

 Wight, in May and June. Both Crosms septentrionaUs and 

 C. varus were not uncommon among alder at Matley Bog in 

 August, 1901, and the former is found at Brandon during the 

 same month. Stephens (Illus. vii. 39) records it somewhat 

 doubtfully from Bungay, apparently on Curtis's authority, and 

 Westwood exhibited a specimen "one of the hind legs of which, 

 although perfect, was considerably smaller than the other. From 

 the collection of Ptev. W. Kirby, F.R.S." (Proc. Ent. Soc. 1840, 

 p. v.). In August, 1898, I found a lot of larvae near Lowestoft, 

 which Mr. Bloomfield thought referable to this species ; C latipes 

 appears to be rarer, and I have only one, found at Oxshott by 

 Beamont, May 25th, 1901. Pontania bipartita is represented in 

 my collection by a single pair, swept in the salt-marshes at 

 Walberswick and Dunwich, on the Suffolk coast, at the end of 

 May, 1905 ; but P. leucosticta is sometimes in the utmost pro- 

 fusion on willow trees both in Suffolk and the New Forest often 

 as early as April 24th. P. viminalis is also very common, espe- 

 cially in marshes about Southwold, in June and July, and from 

 an old willow-stump I had brought indoors here on 10th of last 

 April a female had emerged, and was sitting on the bare wood at 

 11 a.m. on May 21st ; P. salicis and P. proxima are common in 

 similar situations in May and June, the latter extending to the 

 first week in August. 



The British Nemati, as now restricted, consist of but four, or 

 perhaps five, species, concerning whose appearance there seems 

 to be something peculiar, since I have taken both sexes of 

 N. abdominalis upon but one occasion in the Norfolk Broads ; 

 two A^. acuminatus on only May 29th, 1902, in the oft-worked 

 Bentley Woods by beating birch ; and three N. luteus together 

 on June 7th, 1903, on oft-beaten alders at Brandon. Pteronus 

 is a long genus of twenty-three species, of which I find only 

 fourteen represented ; the first, P. salicis, is very common on 

 osiers, and I watched a female laying her eggs in a leaf of this 

 tree on June 18th, 1903 — three or four are inserted in very 

 oblique rows on either side of the midrib in the apical half only. 

 P. ribesii has very uncommonly turned up, though of course 

 abundant in every garden. There is a capital account of it in 

 one of the old Entomological Magazines. In 1893 I took a single 

 Nematus consobrinus, Cam. (female), which Morice doubtfully 

 synonymises with P. leucotrochus, Htg., and in May and June, 



