Li/e-kistori/ ofDasjhQlea. ohscm'si, Winnertz. 583 



superposing one above tlie other, while the third pair (/. 3) 

 is curved and lies beneath the wings. 



The respiratory tubes or iiorus (PI. XX. fig. 15, p.li., and 

 fig. 21) show numerous scale-like triangular plates and bear 

 from 21 to 22 respiratory papillse. The abdominal segments 

 are divided, each by a row of dark strongly chitintzed hooks 

 and plates, into two portions, anterior and posterior (PI. XX. 

 fig. 19). The hooks grow in size near the lateral sides; of 

 the segments, and become flattened and almost scale-like 

 near the dorsal and ventral median lines. Each hook or 

 scale bears a sensory hair arising from a small circular pit 

 (PI. XX. figs. 17 & 18). In front o£ the row of hooks the 

 dorsal side of each abdominal segment shows 2 more or less 

 cliitinized spots and, more laterally, 2 short sensory papillae. 



The whole surface of the abdominal segments is covered 

 with short booklets or scale-like projections. 



The last abdominal segment shows ventrally a longitudinal 

 split and dorsally four pairs of strongly cliitinized papillae, 

 two of which are provided with sensory hairs (PI. XX. fig. 20). 



The pupal stage is of a very short duration — six or seven 

 days only. 



V. Larvae of other Species of Dasyitelea, recorded by 

 VARIOUS Authors. 



The genus Dasyhelea is composed of several species, some 

 of which are difficult to identify as there still remains 

 some confusion about their nomenclature. 



Mr. F. W. Edwards, of the British Museum, has kindly 

 supplied me with the following list and synonymy of a few 

 species of Dasyhelea, the early stages of which have been 

 recorded and in some cases described : — 



1. Dasyhelea flavifrons, Guerin, 1833. 



2. Dasyhelea dufouri, Laboulbene, 1869. 



3. Dasyhelea hippocastani, Mik, 1888. 



4. Dasyhelea obscura, Winnertz, 1852. 



D. homocera, Kieffer, 1919. 



5. Dasyhelea ubscura, \a,Y. goetghebueri, Kieffer. 



D. versicolor, Goetghebuer, 1914 and 1920. 



D. (joetghehueri, Kieffer, 1919. 



1). brevitihialis, Goetghebuer, 1919. 



6. D. versicolor, Winnertz, 1S52. 



D. sensualis, Kieffer, 1919. 



D. bilineata, Goetghebuer, 1920. 



7. Dasyhelea halophUa, Kieffer, 1911. 



8. Dasyhelea coarctata, Kiefter, 1913, 1914. 



9. Dasyhelea dlplosls, Kieffer, 1913, 1914. 

 10. Dasyhelea longipalpis, Kieffer, 1913. 



