140 MR. E. M'lACHLAN ON EXTRA-EUROPEAN TRICHOPTERA. 



purple reflections ; fringes long and grey; veins blackish. (PI. IV. 

 fig. 23, details.) 



I have one c? and two £ from California, sent by Mr. Henry 

 Edwards. The insect is a true Agapetus in every respect. The 

 species of this genus are all small and obscure, and can only 

 be separated by the forms of the ventral tooth or teeth, and 

 of the appendices of the male ; and even then, to ensure cer- 

 tainty, it is advisable always to examine living specimens when 

 that is possible. 



EXPLANATION OF THE PLATES. 

 Plate II. 



Fig. 1. Grammataulius brevilinea, M'Lach., <j> , appendices, from side, 



2. Stenopliylax limbatus, M'Lach., $ , appendices, from side. 



3. Neophylax concinnus, M'Lach.,^, neuration of wings; 3 a, maxillary 



palpus ; 3 b, labial palpus ; 3 c, appendices, from above ; 3 d, extremity 

 of abdomen and appendices, from beneath; 3e, app. intermed., more 

 enlarged. 



4. Notidobia griseola, M'Lach., $ , neuration of wings; 4 a, appendices, 



from side ; 4 b, app. inf., seen internally, more enlarged ; 4 c, $ , extre- 

 mity of abdomen, from above. 



5. Notidobia nigricula, M'Lach., <J , appendices from side ; 5 a, app. inf., 



seen internally, more enlarged. 



6. Nosopus podager, M'Lach.,^, neuration of wings; 6a, head; Gb, an- 



terior leg ; 6 c, appendices, from above. 



7. Dinarthrum ferox, M'Lach., $ , neuration of wings ; 7 a, head; 7 b, ap- 



pendices, from side. 



8. Perissoneura paradoxa, M'Lach., $ , neuration of wings ; 8 a, basal 



portion of antenna ; 8 b, maxillary palpus ; 8 c, labial palpus ; 8 d, 

 extremity of abdomen, from beneath. 



Plate III. 



Fig. 9. Ascalaphomerus finitimus, M'Lach., (J , neuration of wings; 9a, head; 



9 b, maxillary palpus ; 9 c, labial palpus ; 9 d, appendices, from above ; 

 9 e, appendices, from side ; 9/, app. inf., from beneath, more enlarged ; 



9 g, $ , head ; 9 h, extremity of abdomen, from above ; 9 i, the same, from 

 beneath. 



10. HeteropJectron californicwn, M'Lach., <? , neuration of wings; 10 a, 

 basal portion of antenna ; 10 b, maxillary palpus ; 10 c, labial palpus ; 



10 d, posterior leg ; 10 c, appendices, from above. 



11. Ganonema vicarmm, Walk., $ , appendices, from side. 



12. Ganonema molliculum, M'Lach., S > appendices, from side. 



13. Setodes argentifera, M'Lach., <J , neuration of wings; 13 a, appendices, 



from side. 



