February, 1 907.] 25 



SYNOPTIC TABLE OF BRITISH HOPLOCAMPA spp. 



1. Clypeus deeply emarginate or excised. Head never entirely black above, thorax 



with at least the pronotura pale, dorsum of abdomen black only at the base 

 (except in testudinea) 2. 



— Clypeus scarcely emarginate. Head, thorax, and abdomen, except its extreme 



apex, black above 5- 



2. The largest of the species (6—7 mm. long). Stigma black at base, pale at apex. 



Body pale fulvous-brown, with the vertex and the dorsal surface of the thorax 

 and abdomen for the most part black and shining testudinea, Klug. 



— Smaller species (3 — 5 mm. long) stigma unicolorous or only a little darker at 



its base 3. 



3. Stigma slightly darker at base ; ? with a large mark on the breast and the apex 



of the saw-sheath black. (Above, the thorax is mostly black ; the abdomen 

 80 only at the extreme base ; the head testaceous in the $ with a black spot 

 enclosing the ocelli, blackish in the ? with two little yellow spots between 

 the ocelli and the antennae) pectoralis, Thorns. 



— Stigma unicolorous. Body beneath entirely pale 4. 



4. Clypeus roundly excised. Head and mesonotum very shining, practically 



impunctate. (Colour above very variable— thus the thorax may be mostly 

 black, or black at the sides and testaceous in the middle, or streaked with 

 black on the side lobes only, or testaceous altogether) cratxgi, Klug. 



— Clypeus angularly excised. Head and mesonotum dull, strongly and very 



densely punctured. (Thorax generally almost immaculate, sometimes, at 



any rate in the <?, with black markings on the mesonotum)... 



ferruginea, Pz. 



5. Abdomen testaceous beneath. Antennae, at least above, and stigma brownish. 

 (Breast red in the <?, black in the ?) chrysorrhoea,'K\\xg. 



— Abdomen black beneath, testaceous only at apex. Antennse distinctly reddish- 



yellow above and beneath. Stigma yellowish, rather darker at the base. 

 (Breast, in both sexes, black) riitilicornis, 'K\\xg. 



Mr. Cameron records also as British species — gallicola, Cam., 



from Devonshire, alpina, Thorns., from various Scotch localities (and 



also from England, " in Mr. Marshall's collection "), and (in vol. ii, 



pp. 221-2) plagiata, Klug, from Weybridge. Of these, (1) gallicola 



is not represented in the South Kensington coll. Konow believes it 



to be identical with pectoralis, and to have been probably only a 



chance visitor in the galls from which Mr. Parfitt reared it : and in 



fact Mr. Cameron himself says that these galls were " undoubtedly 



c 



