106 



The following species were examined : 

 Stenoma schlaegeri Zeller 

 Menesta albaciliaeella Chambers 



Family Cosmopterygidae 



This family name as used by most authors is equivalent to Laver- 

 nidae or Momphidae, and the genera included under all these names 

 are usually associated with each other. The Cosmopterygidae 

 are much more specialized, however, as they retain neither visible 

 labial palpi nor prothoracic femora (Fig. 99). The appendages are 

 firmly soldered to each other and to the body wall as far as the caudal 

 margin of the sixth abdominal segment, which allows freedom of 

 movement to this segment. There are some generalized characters 

 present, however — the length of the first six abdominal segments, 

 which are as long as in Yponomeutidae, and the shape of the pro- 

 thorax, which is shorter on the meson than at each lateral margin. The 

 abdominal spiracles are slightly produced and tubular. There is a very 

 short cremaster present bearing eight hooked setae, of which four are 

 longer than the remainder. The pupae are about 4 mm. in length. 



The following species was examined : 

 Cosmo pteryx clandcstinclla Busck. 



Family Elachistidae 



This family has been variously subdivided in the past few years, 

 for, like the Tineidae, it included a large number of species which did 

 not form a natural group. Some authors do not retain this family 

 name, but as the nomenclature of the group appears to be still in a 

 rather unsettled condition, this name is retained for the present to in- 

 clude the genus Elachista. The appendages are arranged as in other 

 gelechiids, but there is no trace of maxillary palpi (Fig. 100). The 

 surface of the body is covered with large rounded tubercles and the 

 dorsal surface shows three distinct longitudinal elevations or ridges, 

 one on the meson and one near each lateral margin, bearing the spir- 

 acles on the summit. The wings and other appendages are firmly sol- 

 dered to each other and to the body wall, and there appear to be no 

 free segments. The prothorax is typically gelechiid and the meso- 

 thorax shows a decided alar furrow on each side. There is a distinct 

 cremaster present, but it shows no hooked setae. The pupae are sus- 

 pended from a stem or leaf after the manner of some papilionids, with 

 a silken girth around the body. The pupae average 3.5 mm. in length. 



The following species was examined : 

 Elachista praelineata Braun. 



