Predaceous Insects and their Prey. 369 
Especially is this true of the female, which with a red 
band across the abdomen, strongly suggests the appear- 
ance of a large group (Trans. Ent. Soc. Lond., 1904, pp. 
647, 648) of similarly banded Aculeates. Out of 29 
Aculeate victims three belonged to the group in question, 
—Pompilus viaticus, Sphecodes gibbus, and Ammophila 
hirsuta. All three were captured by female Asilids. 
With the exception of a single Bombus these three victims 
are the most conspicuously marked of all the prey of 
D. diadema, and the most suitable models for mimetic re- 
semblance. (Trans. Ent. Soc. Lond., 1904, pp. 661-662.) 
Remaining genera of the Dasypogonine. 
Of these there is not much to be said, inasmuch as the 
number of records is insufficient to justify conclusions as 
to preferences. Especially is this the case with Saropogon, 
Nos. 56, 57, and Lsopogon, No. 66; while the three exam- 
ples of a single species of Tipulid prey seized by the bee- 
like Lasiopogon cinctus, Nos. 76-78, were all observed in 
the same locality and at nearly the same time. How- 
ever, so far as it goes the evidence certainly suggests a 
mainly Dipterous diet for this latter species. The seven or 
eight victims recorded for the genus Mierostyluwm, Nos. 
58-65, indicate comprehensive tastes; including 3 beetles, 
2 or 3 Cicadas (or possibly a Vespid), 1 grasshopper and 1 
Asilid fly. The huge Microstylum dux appears to be an 
Aculeate mimic. Stenopogon, Nos. 67-69, twice captured 
the specially protected Melyride among the Coleoptera, 
and once a well-defended bug, Thyanta. In Seleropogon, 
Nos. 71-78, alone among the Dasypogonine, we meet with 
the record of a butterfly victim, a species of the distasteful 
sub-family Danaine, The two remaining captures recorded 
for this genus are Asilid flies. One of these offers an 
example—so far unique—of a female Asilid preying upon 
another female of the same species. ‘The two species of 
Damalina, Nos. 74, 75, are probably specialized foes of the 
Dammar-bees (Melipona), and both are beautiful mimics 
of their victims. The two tabulated examples support 
this conclusion, but further observation is greatly wanted. 
Colonel C. T. Bingham, to whom we owe both the records, 
has however recorded that flies of this genus “ persist- 
ently hover round the nest-mouth of the dammar bees, 
and catch the latter on the wing as they issue from the 
nest.” (Trans. Ent. Soc. Lond. 1902, p. 336.) 
