276 THE ENTOMOLOGIST. 



Lend. (IBfil, pi, viii., figs. 9, 9 a). Considering the size of the 

 genus it is remarkable how few specimens have been bred. We 

 have been able to find the hosts of twenty-eight species recorded, 

 but these are mostly from single scattered records ; we only know 

 of five specimens, each belonging, however, to a distinct species, 

 that have been bred in Britain. Ratzeburg says, " It is strange 

 that a genus which is so extraordinarily rich in species, and of 

 which numerous individuals live in certain forest insects pro- 

 duces so few species, I have not a single new species to mention 

 in this volume" ('Die Ichneumonen,' iii. 140). Many of the 

 larger Diptera are known hosts of several species, and it is not 

 improbable that in some instances where Lepidoptera are given 

 that the Ichneumon was itself parasitic on a parasitic dipteron 

 {TachinidcB, &c.). Several species have been bred from sawflies, 

 and one from a beetle larva [Hypera rumicis), according to 

 Kawall, who records that he saw a pair of the same species 

 {P. rufulus) in copula for fifteen seconds on July 23rd, 1852 

 (Stett. Ent. Zeit., xix. 67). The male is still undescribed. 

 Ratzeburg gives the life-histor}'^ of P. pteronorum, Hart, {basi- 

 zonus, Gr.), as bred by hundreds from Lophyrus pini, pointing 

 out how its economy resembled that of a Tryphon (' Die Ichneu- 

 monen,' i. 143-4) ; and Bouche describes the larva and cocoon of 

 P. curvus, Schrank, parasitic on Fidonia piniaria (' Naturge- 

 schichte der Insekten,' p. 144). 



The following British species have been bred : — 



3. nigrita, G'r. from Eristalis florens ; (Kunckel) Giraud. 



4. flavimanus, 6'r. ,, Emphytus serotinus; Cameron. 



5. dumetorum, Gr. ,, Stratiomys chameleon ; Giraud. 



7. rufulus, Ginel. „ Hypera rumicis ; Kawall. 



8. fumator, Gr. „ Mamestra brassicse ; Parfitt. 



9. tenuipes, Gr. „ Fumea nitidella ; Siebold. 



10. troglodytes, Gr. „ Emphytus serotinus ; Cameron. 



12. sereus, Gr. ., Aporia crataegi, Pieris brassicae (hyperparasitic), 



Eupithecia centaureata, Botys verticalis ; 



Brischke. 

 26. brevis, 6^r. „ Carpocapsa pomonana ; (Bouche) Ratzeburg. 



29. flagitator, Gr. „ Depressaria heracliana ; Boie. D. depressella ; 



Rondaui. 

 32. profligator, Fair. „ Depressaria nervosa; Bouche (teste Curtis' 



' Farm Insects '). 



37. cinctorius, Fabr. Geoffroy bred from Sclrpus stem 



38. parviventris, Gr. „ Lophyrus pini or similis ; Brischke. 



39. quadrispinus, 6^?-. „ Eristalis sp. ?; Marshall. 



