192 
HYMENOPTERA. 
antennae of the male are plumose in some families, the eyes are larger 
and more closely approximated on the frons in others, and there are in 
some cases very distinct claspers. In Neuroptera , it is necessary to 
look for male claspers, which, however, are not always present. 
Thynnid^e. 
Pronotum reaching the base of the wings , basal abdominal 
segment not constricted . Posterior legs short , 
female apterous. 
A small family containing two Indian genera and six species, none 
common or generally to be found. The winged males have a distinct 
upturned spine at the apex of the abdomen (as does also Apterogyna ); 
the recorded species are Methoca bicolor, Cam. (Barrackpore) ; M. orien¬ 
tals , Sm. (N. India); M. smithii , Magr. (Bengal, Burma) ; M. rugosa , 
Cam. (Ceylon); Iswara luteus, Westw. (Sind) ; Iswara fasciatus, Sm. 
(Sind). Any observations on the habits of these insects will be of value 
as nothing appears to be known. ( Methoca is by some authors (e.g. t 
Andre) classed with Mutillidce). 
SCOLIID M. 
Pronotum reaching the tegulce. A constriction between first 
and second abdominal segments. Middle coxce 
separated. Both sexes winged. 
This family includes a number of moderate sized flying insects 
classed generally among wasps ; none are very small, while some are 
amongst the largest of the Aculeates. 
The colours are usually warning to a 
greater or less degree, black with 
yellow or orange predominating. The 
head bears the antennae, which are 
larger and more slender in the males ; 
there are the usual three ocelli on the 
vertex ; the mandibles are large ; the 
thorax and body is robust, heavier 
in the female and usually clothed with 
rather thick hair. The legs are short and spinose, the wings well 
developed, the venation valuable for the discrimination of genera. 
