126 ENTOMOLOGICAL SOCIETY 



half of femora and apical parts of hind tibiae, tarsi pale, faintly marked 

 with dark at extreme tip of joints. Wings of a uniform brown, without 

 marks, but seen to have many short golden hairs, fringe dark brown, 

 hind wings dark gray, with a longer, blackish fringe. Fore wings rather 

 long (longer than in H. borealis}, hind wings much shorter, and acute 

 at tips ; the middle tibiae have beneath a row of about twenty-five short, 

 but stout, black spines. 

 Length, 8 mm. 



Three examples from Nogales, Ariz. (Oslar), in July. Dif 

 fers from H. borealis and H. calif ornicus by annulate antennae. 



Family SERICOSTOMATIME. 



TABULAR VIEW OF THE GENERA. 



1. A cross-vein connecting radius to radial sector near discal cell 2 



No such cross-vein present 4 



2. The cross-vein above discal cell ; five apical cells in fore wings. 



Notidobia. 

 The cross-vein is beyond discal cell ; seven apical cells in fore wings. 3 



3. In hind wings only one pedicellate apical cell, seventh apical broadly 



truncate at base; joints 2. and 3 of maxillary palpi barely longer 



than j oint 4 Namamyia. 



In hind wings two pedicellate apical cells (5 and 7) ; maxillary palpi 

 with joints 2 and 3 plainly longer than 4 Nerophilus. 



4. Discal cell in hind wings closed; basal joints of antennae long, and 



densely hairy ; spurs I (2)-4~4 or 1-3-4 5 



Discal cell of hind wings open n 



5. Ocelli present ; spurs 1-3-4 Thremma. 



No ocelli ; four spurs on middle tibiae 6 



6. Discal cell in fore wings much longer than pedicel; a small cell on 



posterior margin of fore wing beyond middle; male with maxil 

 lary palpi small, erect, appressed; no scales on hind wings. 



Notiopsyche. 

 Discal cell in fore wings not, or barely, longer than pedicel 7 



7. Discal cell about as long as pedicel; in hind wings first apical cell 



scarcely extends back of second; male with anal vein of fore 

 wings running into margin, and not connected near tip to cubitus. 8 

 Discal cell plainly shorter than pedicel; male without scales on 

 hind wings, neither labial palpi nor tarsi I enlarged ; the connec 

 tion between median and cubitus beyond middle of wing 9 



8. Male with labial palpi and first joint of tarsus i much enlarged 



(female unknown) Nosopus. 



Male without such parts enlarged; scales on hind wings; female 



