Plate XXXVII 



IlUpoplHjidl <tnd Ahdowiitdl Dct<(ils of CMronomina' 



Fig. 1. Cricofoijus hicinctus, hypopygiuni, one side. 

 Fig. 2. Cricotopus trifasciatus, hypopvgiiim, apical poi'tion of lat- 

 eral arm. 

 Fig. 3. Orfliochidius nigrifus, hypo]\vginin, one side. 

 Fig. 4. Cricofopus fdvihdsis, hypoi)yginin. one side. 

 Fig. 5. Tricliocladius distinctus, hypopygium, one side. 

 Fig. 6. Tricliocladius distinctus, var. hicolor, hypopygium. one side. 

 Fig. 7. Tricliocladius infuscatus, hypopygium, one side. 

 Fig. 8. OrfliocJddiiis pilipes, hypopygium. one side. 

 Fig. 9. TrichovJddius poJitus, hypoj)ygium, one side. 

 Fig. 10. T. siridtas, hypopygium: d, inner production of liasal ]mrt 



of lateral arm; b, apical portion of lateral arm. 

 Fig. 11. Orllioclddius nivoriundns, antepenultimate abdominal seg- 

 ment of male. 



Orthoclddius nivoriundus, hypopygium, one side. 



Dacfylocladius pleuralis, hypopygium, one side. 



Psecfrocladiits vernalis, hypopygium, one side. 



Cdmptoclddius flavens, hypopygium, one side. 



Pscndocliironomus ricliardsoni, hypopygium, one side. 



