174 
Psyche 
[June 
the male genitalia of closely related species of living psychopsids 
occur in Silveira judging from Tjeder’s (i960) revision of these 
species. It is possible that additional material may show other im- 
portant differences in such non-sexual features as the fore wing 
pattern and may reveal whether the apparent difference in the degree 
of development of the terminal gradate series of the fore wing is 
real or not. 
The two psychopsid larvae are rather poorly preserved and show 
no important differences from each other. As noted above, Hagen’s 
specimen is now contained in the Museum of Humboldt University, 
Berlin, while the second specimen is from the collection of the 
Museum of Comparative Zoology. As our knowledge of the tax- 
onomy of the larvae of this family is so scanty, being confined to 
the brief accounts of Froggatt (1902, 1907), Gallard (1914, 1922, 
1923), and Tillyard’s more extensive study of 1918b, there is no 
real reason for referring the amber larvae to the amber genus, and 
I do so here only as a bookkeeping measure. 
?Propsychopsis sp. (Larvae) 
(figs. 12-14) 
“Larva”. Hagen, 1854, Verhandl. zool. bot. Vereins Wien 4: 228; 1856, in 
Berendt, Die im Bernstein befindlichen organishen Resten der Vorwelt 
2: 90; Scudder, 1891, Index Fos. Ins., pp. 330, 337; Handlirsch, 1906, 
Die foss. Ins., p. 909. 
Description. Head capsule: nearly quadrate in dorsal view, 
widest at about level of antennal bases, narrowing somewhat an- 
teriorly to jaw bases and much more gradually posteriorly to distinct 
occipital corners, beyond occipital corners head abruptly constricted 
to form short tubular section anterior to cervix; anterior margin 
with a distinct, triangular labrum-like projection between jaw bases; 
ventral surface (best seen in Berlin specimen) with sclerites of 
maxillary bases and labium small, confined to anterior portion of 
head capsule; surface of head capsule covered with small papillae, 
imparting a rugose texture to cuticle. Appendages : antennae slender, 
with flagellomeres much longer than wide, length of antennae about 
equal to jaws; jaws smoothly curved throughout length, straight-line 
length from base to tip slightly shorter than length of head capsule; 
labial palpi short, slender, segmentation indistinct 1 but with at least 
three palpimeres. 
Body: widest at methathorax (approximately twice as wide as 
head in Berlin specimen, narrower in MCZ specimen), parallel 
