Oresbhts.\ BRITISH ICHNEUMONS. lOQ 



Metathorax black. Legs wiiii the coxae and trochanters red-ljrown. 

 Length, 5-8 mm. 



This species is said to differ from Aptesis only in the unicolorous 

 antennae. 



Two specimens of the above variable size were taken by Marshall be- 

 neath stones at the top of (Jarbhavel, near Loch Rannoch, in July, 1866. 

 The author adds : " 'I'he species may be suspected of being a parasite 

 of Nel'ria, Patrobus or Otiorhyuchus maurtts. These are aliout the (;nly 

 insects occurring at that elevation (some 3,500 feet) capable of maintaining 

 such a creature. No spider of sufficient size was to be found." Dr. .Shar[) 

 (E. ALM. iv. p. 18) adds that he captured an example of this species some 

 years before on Goatfell, in the Isle of Arran. 



HEMITELINI. 



This tribe is to be distinguished from the preceding specifically by the 

 externally incomplete areolet and collectively by the slender legs and 

 antennae. There is, however, a great similarity in its species with those 

 of Panan^yrops and the smaller Phygadeitones, and it is only by their 

 general facies that distinction is possible. Hemiteles and its immediate 

 genera resemble, usually excepting their areolet, both Crypfus and P/iVi^a- 

 deuon (sensu lato) in miniature : not all the species have longitudinal 

 metathoracic costae, in fact the majority of Pezoiiiachi of both se.xes bear 

 no trace of areolation upon the propodeum. The lack of a definite line 

 of demarcation is to be much deplored ; but, of the whole Ichneumonidae, 

 no group is more difficult of discrimination generically than the present, 

 though undoubtedly very highly specialized as a whole to perform the 

 indis{)ensal)le duties assigned to it by Nature, nor has any at present 

 attained less distinct evolution infer se throughout the whole Liserta, 

 excluding certain sections of the Clialcididae. 



HEMITELOIDES. 



This group remains very much in the condition it had assumed when 

 Marshall's last catalogue was published thirty years ago ; many species 

 have been added to the British fauna since that time, but it is still what it 

 was then designated (cf. Ent. Ann. 1874, p. 123), "a receptacle for all the 

 species, however otherwise dissimilar, which have an imperfect areolet." 

 None of the much-too-elaborate seventy-two genera into which it was 

 distributed by Forster in 1868 have been adopted by the most recent 

 Continental authors, though they have been tabulated (for what lliey may 

 be worth) by Ashmead in 1900; and it is with some hesitation that I here 

 introduce two of them as sufficiently distinctive. An unknown male 

 example of Forster's sub-genus Aschistiis was bred from Cohop/iora caesf'iti- 

 tiella found at King's Lynn and Mousehold near Norwich by Ihidgman, 

 who says (Trans. Norf Soc. 1893, p. 617) that it is evidently the male of 

 some species of Pezomathini. Probably several more species at present 

 standing under Hemiteles will have to be transposed to Ceiidono/niis, when 

 that still somewhat ill-defined genus Is more fully known. 



The Pezomachoides may be distinguished from the present group with 



