1901-] , 249 



not have been detected before. It is so noticeable an insect, anel so 

 unlike any other British species, that it can scarcely have been over- 

 looked if met with. 



Miss Chavvner's two specimens differ a good deal in size — S mill, 

 and 12 mill. long, respectively ! but otherwise they are quite similar. 

 One was taken in her garden in August, 1S93, the other (the larger 

 specimen) on Lyndhurst liacccourse in August, 1899. Of the former 

 she writes to me, " It was running on a sandy flower-bed in this garden. 

 The sun was very hot at the time, and it was ilirtiiig its wings, so that 

 the white spots on them quite glistened. I think this is what attracted 

 my attention to it." 



Brunswick, Woking : 



September, 1901. 



ON AN ICHNEUMONID GENUS, AND TWO SPECIES NEW TO 



BRITAIN. 



BY CLAUDE MORLEY, F.E.S., &c. 



DINOTOMUS, Forst. 



Forst., Ver. pr. Eheinl., 1868, p. 188 ; Psilomastix, Tisclibcin, Stett. Ent. Zeit., 

 1868, p. 255 ; Troffus, Gr. I. E., ii, 371 (pars.). 



Head much narrower than thorax, constricted behind eyes ; labrum strongly 

 exserted ; clypeus apically truncate or emarginate. Antennae in both sexes filiform, 

 and not perceptibly centrally dilated. Thorax stout. Scutellum more or less 

 pyramidal or conical, apically immarginate. Abdomen aciculate or striate, with 

 more than three visible dorsal segments, very deeply iiicised and laterally bordered ; 

 lunula} on segments 2 — 4 vranting, or very indistinct. Legs slender, hind femora 

 reaching at most to apex of 4th dorsal segment. Wings dark ; areolet subpenta- 

 gonal or subrhomboidal. 



In the British list this genus is the next before Tragus, Panz. 



DiNOTOMUS LAPIDATOE, Fab. 



Ichneumon lapidator, Fab., M. I., i, 266, S ; Piez., 67 {nee Fab., E. S., iii. 160). 

 /. coeriilator, Fab. Piez., 68. I. caeruleator, Panz. Schref. Ic, cxxxv, f. 3 (?). 

 Trochus coeruleator, Trentep. Isis, 1826, p. 297. Banchns venator, Iliig. Rossi 

 F. E., n. 767. Tragus caeruleatar, Panz., F. G., pt. c, t. 13 : Rcvis., 80. T. lapi- 

 dator, Gr. I. E., ii 391 ; Wesm. Bui. Ac. Brux., 1854, p. 61, S ■ Psilomastix 

 lapidator, Tischb., Ent. Zeit., 1868, $ $ . Dinotomus lapidator, Berth., Ann. Soc. 

 Fr., 1896, p. 296. 



Head black, transverse ; eyes prominent ; face entirely black, somewhat pro- 

 minent longitudinally in the centre, strongly and evenly punctate ; clypeus black, 

 apically emarginate, slightly raised latci'ally, strongly punctate, with scanty white 

 hairs ; mandibles black, rufescent apically, punctate and margined, very obsoletely 

 bifid and much depressed apically ; labrum, ligula, maxillary and labial palpi 

 fulvous ; 2nd joint of maxillary palpi strongly lobed, apical long and cylindrical ; 



