COLEOPTERA SCOLYTID.E. 107 



species is double -brooded, whereas it was possiljly due to erratic 

 swarming. 



It may be noted that the larvaj work iu tlie bast and on tlic sur- 

 face of the wood. The bast is a lightish- 

 cream colour, and the frass from the larv;e 

 is a deep dark chocolate. 



The mother-gallery is two-armed, the total 

 length being about l-^ inch. The larval gal- 

 leries are at right angles Avith the mother- 

 gallery, and vary in length from ^ to i- an 

 inch. The workings are generally in com- 

 paratively small branches (fig. 99). 



The beetle (fig. 100) is the smallest species 

 of the group, and, viewed with a strong lens, 

 certainly the prettiest. The form is more Fig- loo -Hyiesimis vittatus. 



'' ^ (From Barbey.) 



linear than any of the other species. The 



thorax is slightly grey, and the elytra are beautifully variegated, — 

 so much so, that the colouring is suggestive of a moorfowl's egg. 

 The antennse are lightish-brown, and the whip portion is compar- 

 atively long. The legs are also light-brown. 



Geiius Hylurgus. 



Upper side of body clothed with scanty hairs ; thorax long hairs at 

 the sides. Eyes entire and longish. AVhip of antenn?e thread-like 

 and six-jointed ; club ovate. First tarsal joint longest ; third very 

 broad. Elytra extremely punctured. 



Hylurgus piniperda (Linn.) 



MijeJophilus jmiipenJa, L. (Eichhoff and Fowler). 



Hijlesinus pinipo-ila, L. (Judeich and Nitsche). 



The aljove synonyms show that leading entomologists use different 

 generic names. The practical forester of this country has always under- 

 stood it as Hylurgus, but Fowler adopts Myelophilus as the generic term. 

 The genus contains two species, and Fowler^ gives the following 

 key — viz, : 



I. Second interstice of elytra fiattened, and without tubercles at 

 apex . . . . . . H. innipenla, L. 



II. Second interstice of elytra not depressed, and with a row of 

 small tubercles at apex . . . //. minor, Hart. 



^ British Coleoptera, vol. i. p. 419. 



