250 [November, 



Bonhill, Dumbartonshire (these have just been determiued by Konow 

 as saxeseni, Htg.) ; and \di^i\j pcedidus, Knw. (taken by myself while 

 visiting; Mr. Cliitty at Huntingfield, near Faver.-^ham, and recorded in 

 a previous number of the Ent. Mo. Mag.) Another species (Jaricis), 

 of which I have a good many British specimens, does not seem to 

 appear as a Lygceonemaius in the Monograph. But Konow refers to 

 it the ohlongus (?) and funerulus of that work, whicb, however, are 

 both classed in vol. iv under Pristipliora. 



Even with the help of Konow's very recent and complete Revision 

 of his genus, T have found it very difficult to get satisfactory characters 

 on which to base the Table which follows. And I ought to say that 

 in the case of two species {pini and amliguus) I am acquainted only 

 with the ^ ^, and have only been able to tabulate the ? $ by 

 picking out from Konow's descriptions such characters as it seemed 

 to me likely that my readers would be able io make practical use of 

 in determinations. 



Certain species of Lygceonemaius (among them the most brightly 

 coloured) are distinguished from the rest by a peculiar truncation of 

 the ? saw-sheath (in the lateral view) and also by a difference in the 

 sculpture of the last ^ ventral segment. These seem to be generally 

 (or always ?) attached to conifers. The characters are striking, but 

 difficult to describe briefly ; and I have therefore made less use of 

 them in my Tables than would have been desirable if I had aimed at 

 scientific completeness. In Konow's work the main division of the 

 genus is based upon them. 



SYNOPTIC TABLE OF BRITISH LYG^ONEMATUS, spp. 



1. Abdomen beneath (and usually also the breast) light yellow, praeticallly 



throughout 2. 



— Abdomen beneath (and breast) quite black, or the former black with the apical 



segments (entirely or partly) fulvous i. 



2. Larger (6-8 mm. long), vertical area only twice as broad as long. Abdomen above 



testaceous at the sides with only a black central vitta. ? abdomen evidently 

 (but not abruptly) con^pressed towards its apex saxeseni, Htg. 



— Smaller. Vertical area thrice as broad as long. Abdomen above black entirely 



(from side to side) 3. 



3. Antennae longer than abdomen. Frontal area distinct. S with large sub- 



semicircular central impression occupying the whole length of the eighth 

 dorsal segment (long. 5^-6^ mm.) pini, Retz. 



— Antennae as long as abdomen. Frontal area scarcely defined. <? with two very 



short sub-parallel impressions at apex of eighth dorsal segment. Saw-sheath of 

 ? (as seen from above) very long, thick, and parallel-sided, with a rounded 

 apex (5-6 mm. long) amhiguiis, Fall. 



