some British Guiana Hymenoptera. 321 



Family ICHNEUMONIDAE, Leach. 



« 



SubfamUy OPHIONINAE. 

 Genus Eiphosoma, Cresson. 



E. azfecum, Cress.? Issororo, N.W.D. 



E. texamim, Cam. Botanic Gardens, Georgetown. 



Genus Henicospilus, Stephens. 



H. major, Morley. Attracted to artificial Hght. Eock- 

 stone, Essequebo River. 



H. nigricornis, Brulle. Attracted to artificial liglit. 

 Rockstone, Essequebo River. 



H. flavoscutellatus, Brulle. Attracted to artificial light. 

 Rockstone, Essequebo River. 



H. maculiceps, Cam. Bred from the pupa-case of a 

 Noctuid moth, Amyna octo, Guen. An unconnnon species 

 on the coast lands. 



Genus Itoplectis. 

 /. })latana, Morley. 



Subfamily ICHEUMONINAE. 

 Genus Joppa, F. 



/. anfennator, F. Rockstone, Essequebo River. 

 J. geminata, Vriich. Courantyne Coast, Berbice. 



Explanation of Plates XXI-XXIII. 



PLATE XXI. 



Fig. 1. Synoeca surinama, L. 



2. Sceliphron fislulare, Dahlb. 



3. Xylocopa fimbriata, F. $. 

 -4. „ „ F.^. 



5. IMud nest of Melipona gmanae, t'kll. 



6. Mud nest of Tri/po.ri/lori brevicarinatum, Cam. 



7. Eumenes canal iculata, Oliv., on its mud cell. 



Figs. 1, 2, 3, 4, 5 and 7 are about the natural size. Fig. 6 is 

 considerably reduced. 



PLATE XXII. 



Borings of Xylocopa fimbriata, F.,in softwood. Note the "wad " 

 of sawdust which divides the cells. Considerably reduced. 



PLATE XXIII. 



Mud nest of Sceliphron fislulare, Dahlb. Slightly smaller than 

 natural size. 



