1917] Cockerell—Arthropods in Burmese Amber 43 
COLEOPTERA. 
Dermestes larvalis sp. nov. (Dermestidz). 
A minute larva, about 750 microns long (not counting hairs); 
head, legs and hairs ferruginous; apical half of mandibles piceous, 
exactly as in modern Anthrenus larvee; body covered with spinulose 
hairs, the dorsal ones 
very long and abun- 
dant, not tufted; 
longest hair from vi- 
: cinity of head about 
Fig. 4. Dermestes larvalis n. sp. A, hind leg; B, 960 microns; caudal 
end of front leg; C, mandible; D, hair. end mithitestraordie 
narily long hairs, the longest 3200 microns, not forming a distinct 
tuft; legs as in modern Anthrenus larvee, with single sharp claw; 
femora with short hairs, tibize with bristles, hind tibize with small 
spines. The hind legs are about 320 microns long. The body 
is without corneous plates. 
Burmese amber, from R. C. J. Swinhoe. In same slab as type of 
Cryphalites rugosissmus, and 33.5 mm. from it. The characters 
are exactly those of modern Dermestid larvee, but the generic ref- 
erence is of course not precise. The long hairs suggest Dermestes 
rather than some of the other common genera. Evidently the 
museum curator and entomologist, had they existed in Tertiary 
times, would have been troubled by Dermestids as they are today. 
HYMENOPTERA. 
Scleroderma (?) quadridentatum sp. nov. (Bethylide). 
Q. Apterous. Head and thorax 1.7 mm. long; abdomen be- 
yond first segment missing, but total length was probably about 
3.5 mm.; head and thorax black, legs 
and abdomen ferruginous; antennze 
pale ferruginous at base, the flagellum 
darker; mandibles ferruginous, at least 
3-dentate, the outer margin strongly 
and evenly curved; antenne 10- 
jointed, the scape extremely large and 
thick, fully twice as wide at apex as Fig. 5. Scleroderma quadri- 
aks dentatum. A, prothorax; B, base 
the next jomt; head subquadrate, of antenna: C, hind femur. 
