Anihsfa^ BRITISH ICHNEUMONS. 217 



a full series from the neighbourhood of Shere ; but it is not yet known 

 to occur on the Continent. Pilfard took both sexes with some fr(;(|uency 

 about Felden; I have met with the species about Stonehenge in Wilts to- 

 wards the end of June and beaten it from birch in Tuddenham Fen, 

 Suffolk, at the end of August. 



HOLOCREMNA, riiomson. 

 Thorns. O.E. xi. 1887, 1176. 



Head with the vertex nearly entire behind the hardly emarginate eyes, 

 not or but little constricted ; cheeks buccate and not short with costa in- 

 flexed, more rarely sinuately continuous, and not short ; clypeus apically 

 broadly rounded, subtruncate, margined, with small lateral foveae ; mandi- 

 bles somewhat stout and short, with teeth of equal length and peristo- 

 mium somewhat large. Antennal scape generally pale beneath ; flagellum 

 attenuate and somewhat elongate. Thorax gibbulous and not laterally 

 compressed; pronotum very rarely laterally striolate and epomiae usually 

 wanting ; metathoracic carinae stout, but the costulae generally wanting ; 

 areola often short, always laterally but not apically entire. Abdomen 

 \\ith the first segment with lateral petiolar sulci distinct and postpetiole 

 very strongly broader than petiole, not or hardly longer than apically 

 broad, usually laterally punctate, with spiracles at an appreciable distance 

 from the lateral scrobes ; second segment subquadrate, with somewhat 

 distinct thyridii and not or hardly longer than broad ; apical segment 

 laterally and the venter usually pale; terebra not or hardly extending 

 beyond the anus. Legs somewhat stout with the tibiae hardly spinulose, 

 the claws pectinate and unguiculi not stout. Wings with the stigma 

 narrow and very often dark ; areolet somewhat broad, irregular and 

 shortly petiolate, emitting the recurrent nervure with its small or puncti- 

 form fenestra beyond the centre; apex of discoidal cell acute below; 

 radial cell not broad with apical abscissa of radius usually straight and 

 much longer than the curved basal; cubital nervure generallv parallel 

 with the basal; nervellus neither oblique nor geniculate. 



Schmiedeknecht, following Thomson, remarks that this genus " is the 

 most diflicult to recognise of all the subgenera of the old genus Z/wz/f/vi/. 

 It is most like 0/tsiciiiiipa, but here the species are as a rule smaller, the 

 head is shorter behind the eyes and not cubical, the clypeus apically 

 rounded and the mandibular teeth of ecjual length; the stigma is usually 

 dark and the second segment is rarely distinctly longer than broad ; also 

 in the {)resent genus the abdomen is usually only laterally red. From 

 Aniliista it is be.st distinguished by the shape of the head and the buccate 

 cheeks; from Angifni, with which only the males can be confused (since 

 the terebra is always .short), the shape of the head and the colour o'i the 

 abdomen furnish distinctions. I will not omit to emphasise that it re- 

 quires a skilled eye to detect these difl'erences." It is said by Thomson 

 to attack larvae of Tenthredinidae. 



I have omitted H.canalicnlalo from our fauna, since the short diagnosis, 

 given by Hridgman (Trans. V.\\\.. Soc. 1SS2, p. 151) in introducing it, dis- 

 agrees in almost every particular, and especially the second segmental 

 length and lacking costulae, iVoin the description of authors; this was 

 raised from l.e|)i(lopterous l.irvac, and on the Continent it is onI\ known 

 from \i»hiliis fr,i.\i/ii and X. of>/>i n</i( u/ti/ns in I'ru^'-ia .iiul Uaxaria. 



