256 PHLEBOTOMISE. 



forming a pale fuscous fascia before the middle, across which runs an 

 angular mark, white in some lights, as well as six or seven spots along the 

 margin at the apex of the veins ; three veins on the costa bearing a black 

 dot each, also three of the alternate veins on the interior margin ; cilia 

 pale fuscous. Legs unspotted. 



The larva is figured by Bouche and by Perris. " Respiratory 

 auricles of the pupa filiform-curved, communicating with the main 

 trachea by a dilated cylindrical portion of the latter. In the larva 

 ready for transformation they may be seen, through the skin, form- 

 ing an interrupted ring round the first part of the prothorax, be- 

 ginning close to the spiracle and bent down till they nearly meet 

 below, the thickened part of the trachea being also visible. Ac- 

 cording to my observations, the main tracheae rise from the pro- 

 thoracic spiracles to the anal points without any intermediate lateral 

 spiracles as Perris has already stated, differing from Bouche. 1 

 found in the larva a pair of glands (ending in a filament at each 

 end) lying loose among some elongate, subcylindric, white, fatty 

 masses in the neighbourhood of the small intestines, nearly as in 

 Tipula. These are the rudiments of the reproductive organs/' 

 Hal. 



Not rare. (E. S. I.) 



Genus II. PERICOMA. 



PERICOMA, Hal. MSS. Psychoda p., Meig. ; Mcq. ; Zctt. Trichoptera 

 p., Meig. Kl. Tipula p. ? L. ; Gmel. ; Lam. 



Proboscis brevior, non compressa. Labrum breve. Maxilla) obso- 

 letae. Antennae moniliformes. Ala3 maris et fccminae sequales. 

 Proboscis shorter than in Psychoda, not compressed. Labrum short. 



Maxilla3 obsolete. Antennas moniliform. Wings tense. Larva with 



rows of hairs ; inhabits water, bent into a ring, the tufts of curved hairs 



detaining a covering of mud. 



a. Forked veins unequal. The anterior fork of the radial vein much 

 more distant from the base of the wing than the posterior fork. 

 Wings pointed at the end of the second simple intermediate vein 

 (i. e-. the first externo-medial). (Wings as in Psychoda.) Species 

 1-3. [The first is the only species of which I have examined the 

 mouth detached, so that probably some of them should be placed 

 with Psychoda, agreeing in the wings.] 



a a. Anterior fork nearest the base of the wing. Preebrachial areolet 

 closed distinctly at about one-fourth of the length of the wing, nearly 

 opposite the anterior fork. Wings pointed at the end of the first 

 intermediate simple vein (i. e. cubital). Antennae with the first joint 

 elongate. Species 4. 



