1885.] 177 



KEYISION OF THE BRITISH SPECIES OF SPSECOBUS, LATR. 

 (INCLUDINO NINE ADDITIONAL). 



BT EDWAED SAUFDEES, F.L.S. 



(^Concluded from page 151.) 



4. spinulosus, v. Hag., Deutsche Ent. Zeit., xix, 1875, p. 317; Deutsche 



Ent. Zeit., xxvi, 1882, p. 216, pi. vi, f. 3. 



The largest species of the genus, and easily known by the spinose tibise of the 

 <J , and the closely punctured thorax, and almost entirely red abdomen of the ? . 

 Antennse in the ^ shorter than in the preceding species ; 3rd joint of flagellum 

 scarcely longer than the Ist and 2nd together ; thorax closely punctured, rather 

 densely clothed with grey hairs ; wings with the 2nd sub-marginal cell wide, being 

 as wide at the base as long ; alar hooks 10 ; abdomen coarsely punctured, wider 

 than in the gihhus group : armature with the lacinia short and pointed, with a mem- 

 branous wing, produced along the inner margin of the stipes ; tibiee with fine pale 

 spines on their outer edge. 



? resembling pilifrons in sculpture, but known at once from it by the larger 

 number of alar hooks, viz., 7 ; the head and thorax are closely punctured, and clothed 

 with short grey hairs, giving them quite a greyish tint, the wings are dark smoky- 

 brown ; the abdomen has the first three segments entirely, and the sides of the 4th, 

 red ; the apical valve is wide, and slightly narrowed to the apex, which is rounded, 

 and the sides slightly refleied. Length, 11 — 12 mm. 



Apparently rare. I have a $ taken at Littlehampton in July, 

 1878, and a ^ and $ without note of locality. Mr. Y. E. Perkins has 

 taken both sexes in Gloucestershire. 



5. puncticeps, l:\iomB., Op., 99, 6 ; Hym. Scand., ii, p.- 157. E. Saund., 



Trans. Ent. Soc, 1882, p. 198, pi. viii, fig. 1. v. Hag,, Deutsche 



Ent. Zeit., xxvi, 1882, pi. vii, f. 24. 



This species resembles the species of the ephippium group, but 

 the wide 2nd sub-marginal cell in both sexes, and the simple, finely- 

 pointed mandibles of the ? , will easily distinguish it. 



The <J has the pubescence of the base of the antennal joints extending to about 

 the third of their length ; the vertex is closely punctured ; thorax shining, rather 

 remotely and strongly punctured ; wings with the 2nd sub-marginal cell as wide at 

 the base as high, slightly narrowed to the apex ; sides of the metathorax strongly 

 rugose ; abdomen with the apex of the Ist segment, the whole of the 2nd, and base 

 of the 3rd, sometimes red, sometimes entirely black or piceous ; armature orange- 

 red in colour ; the stipites finely rugulose ; the lacinia simply triangular and sub- 

 membranous. 



? rather more brightly and clearly coloured than in many of the species ; 

 mandibles long and pointed, without any tooth near the apex ; thorax shining, dis- 

 tinctly and rather strongly punctured ; wings very clear, the 2nd sub-marginal cell 

 shaped as in the $ ; abdomen with the 4th and following segments black ; the apex 

 of the 3rd also more or less clouded ; apical dorsal valve narrow, punctured, with 

 I a rather deeply impressed line parallel to its margin. Length, 6 — 7 mm. 



