156 



APPENDIX. — HYDROMETBlDiE . 



transverse purplish brown spot in each lateral area ; mesonotum 

 greyish white, with a broad longitudinal purplish brown fascia in 

 each lateral area : abdomen above greyish white, with transverse 

 segmental purplish brown spots ; body beneath greyish white ; 



Fig. 83. — Fabatus servus. 



rostrum castaneous brown, the basal joint oehraceous ; legs dark 

 castaneous brown or shining piceous, bases of anterior femora 

 broadly pale oehraceous ; structural characters as in generic 

 diagnosis. 



Length 4^ to 5 millim. 



Bah. Andaman Sea (Indian Marine Survey, AlcocJc). 



Genus VENTIDIUS. 

 Ventidius, Bist. A. M. N. H. (8) v, p. 149 (U)IO). 



Type, V. aquarius, 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 ; antennte 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 tliird 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 



