250 [October, 



labial palpi with joints soiuewliat iiionilifonii. AiiteiDKe rather short, entirely 

 black above, funiculus ferrugineous below towards base ; darker with joints more 

 cylindrical in ? . Thorax black ; mesonotum finely, evenly, and distinctly punc- 

 tate, with an anterior central depression in ^ ; mesopleurae finely scabrous, divided 

 from the more shining mesosterna by an ill-defined sulcatula, intcrpectoral line 

 smooth and narrow ; metathorax strongly punctate, with black pilosity ; areola very 

 short, triangular, tlie posterior area only well defined. ScuteUum black, strongly 

 punctate, with black pilosity, tumidulous, apically acuminate. Abdomen violaceous- 

 or cairuleous-black, longitudinally rugose, the sculpture much coarser in ? , incisures 

 deeply impressed, dorsum of central segments depressed ; petiole bicarinate, much 

 cxplanate apically, central area narrow, aciculate in $ , rugose in ? ; gastrocaeli 

 normal, deeply impressed ; two apical segments small and inconspicuous ; S with 

 ventral fold on segments 2 — 5, $ on 2 — 3 ; terebra scarcely visible and barely 

 exserted beyond apex of last ventral segment. Legs fulvous, coxa; and trochanters, 

 except apex of hind pair, black ; hind tarsi more or less nigrescent, onychiura red. 

 Wings somewhat infuscate ; costa and tegulse piceous, radix ferrugineous ; basal 

 nervures piceous, the apical and stigma ferrugineous ; areolet distinctly subpetiolate, 

 its sides converging. Length, $ , 15 mm. ; (J, 13 mm. 



The 5 \ar.fuscipennis, Grav. I. E. ii 389, has the wings very dark with a 

 violet reflection. 



This species is a well-known parasite of Papilio Machaon ; it is 

 solitaiy in its parasitism, and the imago emerges from the pupa through 

 a large irregularly-circular hole, often in the right wing-case. All the 

 British examples have heen bred from the above host. 



There is a $ in Eev. T. A. Marshall's collection (Mus. Mason) 

 labelled " British, 1893," and others m those of Messrs. A. Beaumont 

 and W. AV. Esam. The latter received twelve larvae, of which onlj 

 three pupated, two of these producing the sexes of lapidator (above 

 described). There is little doubt these also are British, since they were 

 obtained from a collector in the Cambridge Fens, in June, through 

 Edmonds, who had no Machaon from the continent till the autumn. 



On the continent it is very rare in Sweden, where Holmgren 

 never met with it, and uncommon in central and southern Europe, 

 extending to Algeria. It has been bred from Argynnis Pandora by 

 Mocsary. Gravenhorst says, " Habitat in floribus, in dumetis, in 

 regiouibus sylvaticis." 



UiNOTOMUs picTus, Kricchb. 



Psilomastix pyramidalis, Tischb., Ent. Zeit., 1868, ? (sic g). P. lapidator, 

 var. 19, lih. cit., 1874, ^ $ . P. pictus, Kricchb., Nachr., 1882. Dinotomus pictus, 

 Berth., Ann. Soc. Fr., 1896, p. 297. 



YcYy like the preceding, from which it may at once be known by its truncate 

 clypeus and flavous markings, as well as by the following points : — Head concave 

 behind the eyes ; facial, geual, and vertical orbits broadly fulvous ; clypeus apically 



