Meniscus.] BklTlSH ICHNEUM0^5S. 235 



sexes in August ; and on 13th August, 1907, Bankes sent me two males 

 and six females 3.\i\e, which had just emerged from mid- Kent Trochilium 

 andrenaefonne ; one of these females lived in a dark pill-box till 23rd inst. 

 and I noticed that when just dead the eyes of this species are of a beautiful 

 peacock blue and iridescent. 



6. impressor, Gvav. 



Lissonota impressor, Gr. I.E. iii. 50, excl. varr. 1 et 2. Meniscus impressor, 

 Tasch. Zeits. Ges. Nat. 1863, p. 289; Schm. Opusc. Ichn. 1275, i ? . Lissonota 

 impressor, Thorns. O. E. xiii. 1419, ? . (?) Var. L. suborbitalis, Gr. I. E. iii. 

 42, i . 



A slender, black species with the mouth and legs alone red, and the 

 terebra elongate. Head evenly and distinctly punctate throughout ; frons 

 neither impressed nor striate ; all the orbits immaculate ; J with mouth 

 except apices of mandibles flavous, 9 \\ith the clypeus and palpi testa- 

 ceous and mandibles black. Antennae subfiliform ; of ^ apically rufes- 

 cent beneath and fully as long as, of 9 longer than half, the body. 

 Thorax gibbous, subparallel-sided and immaculate ; notauli obsolete and 

 Acrv broad ; metanotum rugulose and somewhat distinctly sulcate cen- 

 trally, with tlie base more evenly punctate ; petiolar area basally entire 

 and in J strong ; spiracles distinctly oval. Scutellum black and evenly 

 punctate. Abdomen subcylindrical, of 9 longer and hardly narrower 

 than head and thorax, of J narrower, linear and nearly double length of 

 head and thorax ; basal segment elongate, sulcate to beyond its centre 

 and, like the following, finely punctate-reticulate ; apex of basal segment 

 strongly elevated and nitidulous in the centre ; following apically sub- 

 elevated, with the second longer than broad ; terebra slender and dis- 

 tinctly longer than the body (body 13, terebra 15, mm.), with the spicula 

 castaneous or testaceous. Legs somewhat slender, red ; hind tarsi and 

 whole of their basally arcuate tibiae nigrescent ; ^ with the anterior 

 coxae and trochanters rarely paler beneath ; tarsal claws distinctly and 

 evenly pectinate. Wings normal and slightly clouded with stigma and 

 radius luteous, radix and tegulae substramineous and sometimes dark- 

 marked ; areolet regular and subpeliolate, emitting recurrent nervure 

 from almost the centre ; nervellus intercepting at the lower third. Length, 

 12 — 13 mm. 



At once known by its slender body, the entirely immaculate face and 

 thorax, the linear ^ abdomen and elongate 9 terebra. Schmiedeknecht 

 says the 9 occasionally has the scutellum pale-marked. It is far less 

 like J\/. se/osa than Thomson would lead one to supjjose. J/, suborbi/alis 

 is probably a good and distinct species, of which 1 have several J 6 from 

 Shere, but the 9 is i'liU unknown. 



