156 



APPENDIX. HYDBOMETRID2E . 



transverse purplish brown spot in each lateral area ; inesonotum 

 greyish white, with a broad longitudinal purplish brown fascia m 

 each lateral area : abdomen above greyish white, with transverse 

 segmental purplish brown spots; body beneath greyish white; 



Fig. 83. Fabattis servus. 



rostrum castaneous brown, the basal joint ochraceous ; legs dark 

 castaneous brown or shining piceous, bases of anterior femora 

 broadly pale ochraceous ; structural characters as in generic 

 diagnosis. 



Length 4^ to 5 millim. 



Hob, Andaman Sea (Indian Marine Survey, Alcock). 



Genus VENTIDIUS. 

 Ventidius, Dist. A. M. N. H. (8) v, p. 149 (1910). 



Type, V. aquariiis, Dist. 



Distribution. At present only known from Travancore. 



Head longer than broad, roundly truncate anteriorly ; eyes- 

 large, oblique, their inner margins rounded, directed backward 

 beyond the anterior margin of the pronotum ; antennae with the 

 first and second joints distinctly and somewhat longly hirsute, 

 second joint less prominently hirsute than the first which is about 

 as long as the anterior femora, second and third subequal in length, 

 each a little longer than the fourth ; pronotum about as long as 

 breadth between the pronotal angles, the lateral margins oblique, 

 the anterior narrowing to head, the posterior narrowing to apex, 

 which is broadly obtusely angulate ; hemelytra passing the 



