Grimshaw: Lincolushtre Diptera. ; 163 
Rhingia rostrata L. Well, 5th June 1887 (Mason, 1896, sub 
nom. R. campestris Mg.). Theddlethorpe, ¢ and ?, June 
1896. Torksey, one ¢, May 1896. Mablethorpe, two ¢s, 
June 1897 (Thornley). 
Volucella bombylans L. Well, one, roth June 1888 (Mason, 
1890). Mablethorpe, one 2, June 1897 (Thornley). Near 
Louth (Kew, 1888). Near Louth, with var. p/umata DeG., 
6th July 1886 (Kew, 1886). 
Volucella pellucens L. Claythorpe, 6th July 1887 (Mason, 
1896). An example picked up drowned on the shore at 
Mablethorpe, June 1897 (Thornley). Near Louth, 6th July 
1886 (Kew, 1886). 
Eristalis sepulchralis L. Theddlethorpe, one ¢, June 1896 
(Thornley). 
Eristalis tenax L. Greenfield, hee, Sth June 1887. Alford, 
September-December 1886. Alford district, one (Mason, 
1896). Louth, 27th March 1887 (Kew, 1888). 
Eristalis intricarius L. Mumby Chapel, both sexes, 31st July 
1888 (Mason, 1890). 
Eristalis arbustorum L. Rigsby, 13th September 1886 (Mason, 
1896). Mumby Chapel, August 1887 (Mason, 1896). 
Torksey, one ¢, June 1896 (Thornley). Kenwick, Louth, 
12th August 1886 (Kew, 1888). 
Eristalis pertinax Scop. Grimsby, one ¢ and one ? , September 
1896. Theddlethorpe, one 2, June 1896 (Thornley). Ken- 
wick Lane, Louth (Kew, 1 
Eristalis horticola DeG. Grimsby, one ?, September 1896 
(Thornley). 
Helophilus hybridus Lw. Theddlethorpe, four, June 1896 
(Thornley). 
Helophilus pendulus L. Mumby Chapel, August 1887 (Mason, 
1896). Theddlethorpe, three ¢s and two @s, June 1896. 
Torksey, four ¢s and three ¢s, June 1896. Grimsby, 
one ¢, September 1896. Mablethorpe, one ¢, June 1897 
(Thornley). 
Helophilus frutetorum Fab. Theddlethorpe, one, June 1896 
(Thornley). 
Tropidia milesiformis Fin. Theddlethorpe, one ¢ and one ¢, 
June 1896. Mablethorpe, six ¢s and two ?s, June 1897 
(Thornley). 
_ Xylota segnis L. Greenfield, 8th June 1887 (Mason, 1806). 
June 1898. 
