214 Mr. E. Saunders' Synopsis of 



1st abdominal segment and fulvous beneath ; the thorax 

 closely and distinctly punctured ; the metathorax very 

 rugose, looked at from in front somewhat truncate, its 

 basal area indefinite, irregularly rugose ; the abdomen is 

 not very shining, distinctly punctured, the 1st segment 

 rather more sparsely so than the others. Legs with 

 the apex of the femora and the base of the tibiae, and 

 sometimes also the apex, and the tarsi, pale yellow ; 

 (for genitalia see pi. ix., fig. 11). Length 6 — 7 mm. 



Hah. Not common ; Isle of Wight, Chobham, &c. 



I believe this <? is the same as that described by Smith> 

 but I cannot follow him in the description of the meta- 

 thorax; he says, "the truncations irregularly trans- 

 versely striate," and I am not clear as to his meaning. 



15. Halictus imuxillus, Schenck. 



Schenck, Jahr. Ver. Nat. Herz. Nassau, xiv., 1859, 

 p. 287. 



Smaller than any of the preceding, and about the size 

 of nitidmsculus and minutus. 



<? only differs from that of the preceding species in 

 being smaller, with a rounder face, rather shorter an- 

 tennee, and almost impunctate 1st abdominal segment ; 

 the following segments also being more shining and less 

 closely punctured than in loiujulus ; (for genitalia see 

 pi. ix., fig. 10). 



? black ; head and thorax punctured, the latter more 

 remotely than in any of the other species of this group, 

 somewhat shining, and with a strongly marked dorsal 

 impression extending in some specimens to within a 

 third of the base of the mesothorax ; nervures of the 

 wings piceous ; metathorax clathrately rugose up to its 

 brow, which is somewhat rounded, without prominent 

 angles ; a slightly raised line runs below the brow on 

 each side, giving the metathorax, in certain positions, 

 a truncate appearance ; this character, however, seems 

 to var}'. Abdomen with the posterior margins of the 

 segments widely testaceous ; basal segment very shining, 

 almost impunctate ; following segments dull, clothed 

 with a fine greyish yellow pubescence, and under a 

 strong lens seen to be finely punctured ; 2nd segment 

 with a lateral spot of white pubescence at the base. 

 Legs inclining to be piceous, covered, as also the under 



