APPENDIX 
Vll 
Melipona basimaculata, sp. nov. 
$ . Black, the coxae and trochanters of the intermediate and posterior legs, the base of 
the first abdominal segment above, and the basal four ventral segments white. Head, thorax, and 
legs on the outside clothed with fuscous brown pubescence with a mixture of longer hairs of the 
same colour, the inside of the tarsi with dense, bright ferruginous pubescence, the outside of 
the posterior tibiae and the apex of the abdomen with sparse long black bristles ; the cerci 
testaceous ; wings hyaline, nervures and tegulae dark brown. Head and thorax finely and 
somewhat densely punctured ; the median segment above rather more sparsely punctured, the 
legs rather more coarsely punctured on the outside, the flattened, but slightly convex tibiae of 
the posterior legs bearing on the outside minute piliferous tubercles ; abdomen, the basal two 
segments smooth, highly polished and shining, remaining segments finely and closely punctured, 
basal segment concave anteriorly. 
Length, ^ , 7-5 to 8 mm. ; Exp., 17 mm. 
Habitat. Bisera t, Jalor ; Telom, Perak-Pahang boundary, 4,000 feet. 
LIST OF WATER BEETLES FROM THE PATANI STATES 
By D. sharp, M.A., F.R.S. 
DYTISCIDAE. Cybisw guerini ; C. sugillatus ; C. dehaani ; Eretes sticticus ; Hydaticus 
bivittatus (four specimens, of which one is a variety) ; H. rhantoides ; Lacconectus basalts ; 
Agabus dissimilis ; Copelatus pusillus. 
GYRINIDAE. Porrorhynchus marginatus ; Dineutes unidentatus ; D. subspinosus ; Orctogyrus 
discifer ; Stexothus cavisternum ; Sternolophus rujipes ; Berosus, s'p. rvov. (J) 
