144 MR. BOLD ON THE ACULEATE HYMENOPTEHA 



It nests in a great variety of situations ; in woods it is commonly- 

 found in decaying wood, or beneath the bark of decaying trees. 



2. M. scabrinodis, Nyl. Nyl., 1. c, 930, 3. ; Smith, Monog., 



21, 2. 



Also a common insect, but not so abundant as No. 1. I have 

 specimens from Gosforth, Heaton, South Shields, Whitley, &c. 

 At Whitley I found a colony beneath a stone, within a few feet 

 of a very large nest of the next species. 



3. M. IcBvinodus, Nyl. Nyl., 1. c, 1052, 18; Smith, Monog., 



23, 3. 



The most abundant species of the genus in our district, occur- 

 ring nearly everywhere, but most copiously on the sea coast. 

 Behind the ballast heaps at South Shields it is found, nesting 

 beneath stones in immense profusion, and there I have often 

 taken a large beetle, Staphylinus stercorarius, in its nests. 



4. M. lobicornis, Nyl. Nyl., 1. c, 932, 4; Smith, Monog., 



25, 5. 



This appears to be a rare insect everywhere. With us it has 

 only been found on the sea coast, and there very sparingly. 

 On the sand-hills near South Shields I found a female and a 

 worker, in April. On Whitley links, in May, I got other work- 

 ers, and in August met with a nest beneath a stone, but it only 

 contained about a dozen of the same sex. I have also an indi- 

 vidual from Lanercost, in Cumberland. 



5. M. acervorum, Fab. Fab., Ent, Syst., II., 358, 38; Smith, 



Monog., 29, 8. 



Somewhat rare in the district. I have the sexes from G-os- 

 forth Woods. It occixrred, in some plenty, on the shore at 

 Tain, in Rosshire, in September, nesting beneath stones. 



Note. — I have, in former times, seen an Ant or Ants very 

 abundant in stoves and hot-houses, but latterly I have not been 

 able to meet with them. 



