l-i'.H.l 17 



ueutal P. Llchtensteinil are its greater size, the more abundant and 

 yellower frontal pubescence, the greater narrowing o£ the thorax in 

 front and its sparser and leas rugose punctuation behind. 



PiTYOPHTHORUS PUBESCENS, Marsham, Stephens. 



Ips pubescens. Marsh., Ent. Brit. Col., p. 58 (1802). 



P. ramuloriim, Perris, Ann. Pr., 1856, p. 192. 

 Somewhat elongate, obscure fuscous-brown, shilling, with thin grey pubescence, 

 antennae and legs testaceous, femora and tibi^ with fuscous tinge. Head in female 

 with a conspicuous brush of grey-yellow hair. Thorax as long as broad, narrowed 

 in front with apex rounded, asperate in front, behind sliining, with large deep 

 punctures and smooth central line. Elytra cylindrical, with conspicuous rows of 

 strong punctures ; the interstices with slight transverse wrinkles. Sutural stria not 

 depressed, suture slightly raised at apex with a narrow, somewhat rounded, depres- 

 sion on either side, whose lateral walls are only slightly raised, and are punctured 

 by the continuation of the lateral striae of the elytra, without conspicuous setigerous 

 tubercles. Length, 1-3— 1'5 mm. 



Commonly distributed in iir woods in the South of England, 

 Shirley, New Porest, &c. 



Similar to the foregoing species, but much smaller, without im- 

 pressed sutural striae, and without the deep and wide apical impression 

 or its marginal tubercles. 



PiTYOPHTHORUS MICROGRAPHUS, Gyll. 



Elongate cylindrical, reddish or pitchy-brown, moderately shining. Antennae 

 and legs reddish-brown. Thorax longer than broad, hardly narrowed in front, apex 

 bluntly rounded, anterior exasperations concentrically disposed, punctuation of 

 hinder part fine and scattered. Elytra produced at apex, not obtusely rounded, with 

 fine punctuation. The apical depressions distinct, deep, rather dull, their outer 

 margins raised, convex, shining, without punctures, but with distinct setigerous 

 tubercles, as have the raised sutural margins. Length, 1"3 — I'o mm. 



I know of no authentic British specimens. The species is es- 

 pecially attached to the spruce fir. 



Its longer shape, brighter colour, and finer punctuation will di.stin- 

 guish it from either of the other species, as will the acuminate elytra. 



Ill the identification of the sexes I follow EichhofE's views in his 

 " Europaischen Borkenkiifer " (Berlin, 1880). He there reversed his 

 earlier opinion, which agreed with Thomson's, in accordance with ob- 

 servations and dissections whic he had recently made. 



The sj)ecics of Fiiyoplttliorus can be taken in localities where they 

 occur by examining the smaller terminal joints and branches of Conifer 

 brushwood. jMost species breed in these, and do not touch the bark 

 of large branclu's. P. iiiicruf/raphuti is, however, an exception. 



