PSYCHODA. 2o:> 



dibles obsolete. Labruiri and maxilla; as long as the labium ; maxilla: 

 lancet-like. Palpi four-jointed, exserted, pubescent, curved downward ; 

 joints of equal length. Antennae with from twelve to sixteen joints, 

 porrect, moniliform, verticillate-pilose, a little longer than the thorax ; 

 first and second joints stouter than the rest. Thorax nearly round. 

 Wings obovate, broad, deflexed, very hairy, without transverse vein- 

 lets ; mediastinal vein rudimentary ; subcostal a little more than half 

 the length of the wing ; radial proceeding from near the base of the 

 cubital, forked before one-third of its length ; cubital ending at the 

 tip of the wing ; subapical ending at a little behind the tip ; two ex- 

 terno-medial veins formed by a fork of the prsebrachial ; anal, axillary, 

 and subaxillary veins complete ; humeral veinlet near the base. Areolets 

 thirteen, the humeral, the subcostal, which is mostly united to the 

 mediastinal, two radial, the cubital, the prsebrachial, which is very 

 short, the pobrachial, the subapical, two externo-meclial, the anal, the 

 axillary, and the subaxillary ; posterior margin not excavated, nor in- 

 dented towards the base. Halteres of moderate size. Abdomen cy- 

 lindrical, with eight segments. Legs short, unarmed, rather thick; 

 tibiae without apical spurs. 



The species of this genus resemble little moths ; their wings 

 being generally thickly covered with hairs. Some are very abun- 

 dant during the winter months when the weather is mild. When 

 walking up glass they move alternately from right to left and 

 from left to right, so as to describe small zigzags. 



The larva of P.phaltznoides and that of P. sexpunctata inhabit 

 dry cow-dung; they are long, subfusiform, depressed, with a slender, 

 straight, cylindrical tail, which is longer than the preceding seg- 

 ment. The pupa has two short appendages, thickened at the tips 

 behind the head ; the abdomen is tapering. 



1. phalaenoides, L. S. N. ii. 977. 47 (1767) ; F. ; D. G. ; Geoffr. ; 

 Schr. ; Miill. ; Gmel. ; Ret/, ; Lam. ; Latr. ; Gim. ; Ross. (V.) nervosa, 

 Schr. ; Meig. ; Mcq. ; Curt. ; Gim. ; Ferris ; Ross. (V.) ; Zett. muraria, 

 Latr. Canescens, antennis nigro-cinctis, alls immaculatis, halteribus 

 albis. Long. -| ; alar. 2 lin. 



Hoary. Antennae with black bands. Wings unspotted. Halteres 

 white. 



The most abundant species, occurring not only on walls and 

 windows, but on shrubs, etc., everywhere ; probably breeds in all 

 sorts of vegetable decay. (E. S. I.) - 



2. sexpunctata, Curt. \ B. E. 745. 6. pi. 745 (1839). phala- 

 noides, var. Scop. phalanoides, Meig. ; Mcq. ; Zett. marginepunctata, 

 Roser. Pallide ochraceo-cinerea, pubescens, alee fascia fusca, maculis 

 sex aut septem apicaUlus. 



Downy, very pale ochreous-grey. Antennas eleven-jointed ?, monili- 

 form. Thorax pale ochreous. Wings with some of the hairs black, 



