6+ THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
the antennal groove, there being three more short bristles further upwards, between 
the second bristle and the dorsal edge of the head. The strongly curved first 
segment of the maxillary palpus is much longer than the second and also than the 
fourth, the third being about half the length of the first. The proportions are : 
i r, 9, 5, 8J. The maxilla is very different from that of the other species, being 
long and pointed, with the narrow apical half slightly curved backwards, as shown 
in the figure (PI. 1, Fig. 4, max.). 
Thorax. — The pronotum bears a row of four bristles on each side, the most 
ventral bristle being the longest. The interspace between this ventral bristle and the 
next is wide, and there is an extremely minute hair halfway between these two 
bristles. On the mesonotum there is one long bristle, the episternum bearing also a 
bristle. The metanotum has a few small hairs on the back, while there is one 
minute hair on the episternum of the metathorax, and a bristle on the sternum. 
The metathoracical epimerum bears from four to six bristles. The presternum is 
produced backwards into a rather long process, while the mesosternum and the meta- 
thoracical episternum are produced" into a short blunt process. 
Abdomen. — The first and second tergites bear each a row of four to six bristles 
near the base on the two sides taken together. Tergites 3 to 6 have no bristles, 
tergite 7, however, bears one small hair near the base. The sternites have no 
bristles. The stigmatical cavities of the abdomen are larger than that of the meta- 
thoraxic epimerum. 
Legs. — The hind coxa is longer than in H. psitlaci. The hind femur has a row 
of four or five bristles on the inner side. The tibiae are essentially as in H. psittaci, 
the tarsi being, however, different. In the fore tarsus the first and second segments 
are about twice as long as they are broad, the third segment is half as long again as it is 
broad, and the fourth one-third longer than it is broad. The third segments of the 
mid and hind tarsi are also much longer than in //. psittaci. The fifth segment of all 
the tarsi is again slenderer than in H. psittaci, bearing on each side five bristles, and 
a long hair (PI. IV, Fig. 31). There are no ventral apical bristles on this segment 
as there are in //. psittaci. The claw is very slender and nearly straight, bearing a 
very small basal projection, which is not nearly so prominent as in H. psittaci. The 
measurements of the mid and hind tarsi are as follows : — 
First Segment 
Second Segment 
Third Segment 
Fourth Segment 
Fifth Segment 
Mid tarsus 
>4 
I 2 
I I 
16 
Hind tarsus 
27 
18 
'5 
I I 
20 
