li'^'-l 258 



punctured, with miuute punctures intermixed, tlie lateral margins narrowly 

 sinuato-explanate, the anterior angles obtuse but prominent, the hind angles 

 subrectangular, the basal groove nari'owed at the middle ; elytra long, sub- 

 parallel, very deeply crenato-striate, the interstices almost smooth, flat on the 

 disc and carinifoi'm at the sides, the humeri with a prominent tooth ; anterior 

 tibiae with three long, subequidistant teeth ; intermediate and posterior tibiae 

 much widened outwards, sharply dentate externally, ihe spurs very long, 

 unequal in length, the longer one reaching beyond the second taisal joint. 



Length 3| mm. 



The species of Saj)rosites live under bark, and how one of them 

 could have been introduced into Arundel Park is a mystery. It may be 

 observed, however, that S. peregrimis must have been brought over with 

 orchids, and that one or two species of the allied genus Afaenius Harold 

 have been carried into Europe in some way or other. Plevropliorus 

 caesus Panz. and Oxyomus porcatxis F. (as well as seven Apliodii'), are 

 common to Europe and N. America. The only species on the British list 

 at all resembling the Sajyrosifes is P. caesus, and this latter is probably 

 an introduction here. — G. C. C] 



IPS {T0MICU8) EBOSUS Woll. IN BEITAIN. 

 BT DENIS J. ATKINSO]S'. 



In August last, Avhile collecting in the Forest of Dean, I was tVr- 

 tunate enough to take i^js erosns Woll. breeding in large numlx'rs in 

 felled Scots pine. With it was also taken /. sexdentatus Born., a beetle 

 sufficiently uncommon as to be considered rare, but which latterly has 

 seemed to be spreading. Both were taken in large numbers on tne same 

 logs, erosus in all its stages and sexdentatus as pupae and adults. 



I. erosus is in appearance very similar to I. laricis F., w'ith which 

 it is very likely to be confused at first sight, but is somewhat smaller 

 than the latter, the sutures of the antennal club are curved instead of 

 straight, and the armature of the apical declivity of the elytra is 

 different. The teeth in laricis are vei'y similar in the two sexes, and are 

 three in number, situated close to the margin of the declivity, at the ends 

 of interstices 1, 3, and 6 respectively. In erosus the sexes differ con- 

 siderably : the 2 is armed with three small teeth, placed at some 

 considerable distance from the margin ; in the c? the teeth are four in 

 number and close to the margin, as in laricis, and lie at the ends of 

 interstices 1, 3, 4, and 5 respectively. The 2nd tooth is large and rect- 

 angular at the apex (whence is derived the natue rectangulus Eichhoft"), 

 and the lowest tooth, being at the end of interstice 5, is higher up on the 

 side-wall than the corresponding tooth in laricis. 



