269 
(fig. 7). The diameter of the gall is about twice that of the arm, 
and the parasite lies with the head turned towards the disk of 
the host (fig. 8). At the basis of the arm alongside the gall an- 
other gall, but smaller and totally collapsed, may be seen (fig. 8). 
F 8. 
Fig. 7. The gall of MARE ullerpen, including DE ERE RER appendicu- 
is losum (drawn by Dr. Th. M 
18.8. The gall Baskrarg showi lag the natural Saalllen et  Arthrochordeumium 
en 
appendiculosum. Above to the right a collapsed gall may be s 
at the basis of another arm. 
AÅrthrochordeumium appendiculosum n. gen., n. sp. 
ls ate ne RR On account of the great similarity of 
| the male to that of Chordeumium obesum, 
and of the distinct articulation in the 
thorax of the female, 1 propose the 
generic name Arthrochordeumium; the 
specific name appendiculosum refers to 
the appendices on the left side of the 
2. and 3. thoracic segment in the female. 
Male. (Figs. 9—12). Length 1,7 mm, 
breadth I mm. 
Exterior. The body is sausage-shaped 
or saccate, curved, somewhat broader 
than thick and without true segmentation. 
o eyes. A little unpaired wart is placed 
Fig. 9. The male from the left 
Side. 
