118 [May, 



Reference has already been made to the resembhince between this 

 species and F. morula (Subsect. C, 25), which likeness suggested its 

 name. In the field, the place of insertion of the radius cannot, of 

 course, be made out ; but the difference in position of the pobrachial 

 bifurcation, mentioned above, and the black spot of bristling hair on 

 the axillar standing inwards out of line with the other spots of 

 bristling hair, suffice for the recognition of P. frntercuJa while in the 

 tube of the collecting bottle. 



28. Peuicoma caliginos.\, Etn. 

 P. calirjinosa, ante, 2ud ser., vol. iv, 128, and vol. v, pi. iii, P. 28 

 (detail). 



Bifurcation of the pobrachial nervure distinctly interior to the shortest line 

 drawn from the axil of the radial fork to the end of the axillar nervure. The fascia 

 across the bases of the forks marks the exterior limits of the ranks of bristling hair 

 from the anterior radius to the postical nervure ; it is interrupted at the prffibrachial 

 and anal nervures (where the hair is smooth and not denser than elsewhere), and is 

 completed posteriorly by the dense decumbent hairs beyond the bristling hair on the 

 axillar nervure. Except on the mediastinal nervure, a well-marked parting divides 

 the bristling hair from that beyond it, and the exterior hairs next to the parting lie 

 outwards in fascicles so as to produce the outer fascia from the end of the postical 

 nervure, which is interrupted at the prsebrachial nervure ; beyond this fascia the 

 hairs spread more thinly, except just at the endings of the pobrachial branches and 

 prsebrachial nervure, where they again lie close together in the usual fashion ; fringes 

 very long towards the base at the posterior margin, and long at the base of the costa. 

 Hair of the head and body fuligineous, very long at the sides of the abdomen ; $ 

 genitalia of the usual pattern. Hair of the antennae warm sepia-brown ; indumen- 

 tum of tiie scape in the $ black, spreading at the apex of the 1st joint. Legs black- 

 brown or fuliginous, with a relatively dull gloss on the tarsus. 



Beneath, at the base of the wing, the distribution of scales in both sexes is 

 much the same as in P. incerta (29), q. v. Season, June to August. 



Psychoda hicolor. Banks, " The Canadian Entomologist," xxvi, 333 

 (1894), may be suspected to be related in some degree to P. caliginosa 

 and its kindred ; but the descriptions of this author are too pre- 

 Schinerian in style for purposes of classification, and leave open the 

 alternative possibility of its having nearer affinity with species 

 scheduled above under Pericovia, Section III, Subsection E, especially 

 with the Algerian species No. XIII. 



29. Pericoma incekta, Etn. 



P. incerta, ante, 2nd ser., vol. iv, 128, step 3«, and vol. v, pi. iii, 

 P. 29 (detail). 



Pobrachial bifurcation very little interior to the shortest line drawn from the 

 axil of the radial fork to the end of the axillar nervure. The broken light haired or 



