218 



THE ZOOLOGIST. 



19. Cercopid^e.* f 

 Ashmead, as last referred to, includes this family in his above 

 vague remark. 



20. Penthimia nigra, Goeze.* 

 Penthimia air a is said by Lichtenstein ('Naturaliste,' 1880, 

 p. 206) to be parasitised by the Proctotrypid, Phanurus pen- 

 thimia, Licht. 



21. Athysanus. 



From an undetermined species of this genus, Mik (Wien. Ent, 

 Zeit. 1882, p. 215) bred the Proctotrypid, Gonatopus pedestris, 

 Dalm. [Cf. also Perkins, Keport of Experiment Station of 

 Hawaiian Sugar Planters' Assoc., Divis. Entom. Bull. i. (1905), 

 which I have not seen.] 



22. Athysanus plebejus, Fall. 



I took a specimen of this species near Ipswich on Sept. 13th, 

 1904, bearing a larva similar to that found on Psallns variabilis 

 (ante). 



23. Athysanus obsoletus, Kbm. 



I swept a specimen of this species, bearing a black larva, 

 probably of the same genus as the last-named Proctotrypid, from 

 Carex paniculata, at Foxhall, Suffolk, on Aug. 13th, 1904. Mr. 

 Butler tells me he has specimens of this species bearing Gonatopus 

 larvae, and remarks that all the species upon which he has noted 

 such occur almost exclusively in the wettest situations. 



f The Fossorial genera Gorytes, Hoplisus, Harpactus, Alyson, and 

 Stizus are known to provision their nests with Cicadince, thus : — G. cam- 

 pestris and G. mystaceus provide the larvae of Philcenus spumarius for their 

 own grubs to feast upon ; Hoplisus punctulatus gathers Selenocephalus 

 obsoletus; H. laticinctus and H. sulcifrons get Philcenus spumarius, and H. 

 punctuosus provisions its nest with various Tettigometrce ; Harpactus con- 

 cinnus, H. elegans, and H. Iccvis with Selenocephalus obsoletus ; H. exiguus 

 with Acocephalus nervosus', H. elegans also with Athysanus variegatas, 

 Hysteropterum liliimacula, and a species of Deltocephalus; H. l&vis with 

 Goniagnathus brevis and Athysanus variegatus ; and H. tmnidus with 

 various Cicadince. Alyson ratzeburgi preys upon Falcidius apterus ; 

 and A. fuscatus upon Agallia venosa, Athysanus sordidus, Bythoscopi, 

 Grypotes, &c. Stizus tridens attacks Idiocerus tamiops, Thamnotettix mar- 

 tini, &c. ; and Crabro gonager, like Sphecius nigricornis, also captures 

 " Cicadines " (cf. Gaulle, Cat. 133-7, &c). This association cannot, however, 

 be termed parasitism. 



In like manner Psen (Mimesa) ater provisions its nest with Macropsis 



