88 



FOREST ENTOMOLOGY. 



be made, taking the very lucid diagmmniatical plate from Judeicli and 

 Nitsche. In fig. 82, a, we get a simple single-armed mother-gallery, 



Pig. 82. — Typ'iad worliugs of Scolytidce. 

 3ingle-armed mother-gallery, showing equal larval galleries and pupal recesses ; b, short 

 mother-gallery and radiating larval galleries ; c, single-armed short horizontal mother- 

 gallery and long right-angled larval galleries ; d, double-armed lioriznntal mother-gallery 

 with right-angled larval galleries; e, two-armed mother-gallery of a polygamous species; 

 /, four-armed mother-gallery of a polygamous species ; g, five-armed mother-gallery of a 

 polygamous species ; h, star-gallery of a polygamous species ; i, ladder-gallery of a wood- 

 Isoring s))ecies ; k, forked mother and larval galleries ; I, an irregular ladder-gallery ; m, a 

 family gallery. Copied from Judeicli and Nitsclie. 



with tlie larval galleries radiating slightly from the mother- gallery. 



