400 Mr. G. J. Arrow on Rutelid Coleoptera. 



Pseudosinghala conjuga, sp. n. 



Breviter cylindrica, pallide testacea, iibique metallico-nitens ; pro- 

 thorace (lateribus exceptis), scutello, elytrorum sutura (antice et 

 posticc latius), abdominis medio, tibiistarsisquo maris nigro-ajneis, 

 feminne rufo-testaceis ; capite rugoso, cly-peo late arcuato ; pro- 

 thorace valde convexo, subtiliter punctate, margine postica regu- 

 lariter arcuata, lateribus fortiter arcuatis, angulis anticis acutis, 

 posticia valde obtusis ; scutello fere requaliter trilateral!, vix punc- 

 tato ; elytris fortiter punctato-striatis, macula lata suturali vix 

 ad margines anticam et posticam attingente medio utrinque 

 abrupto interrupta ; pvgidio disperse punctato, cum pectoris et 

 abdominis lateribus femoribusque pallidis ; corpore toto nudo ; 

 tibiis anticis fortiter bidentatis, tarsorum 4 anteriorum unguibua 

 externis fissis. 



Long. 6 mm. 



Hab. S. India, Nilgiri Hills. 



In this species there is a slight metallic gloss over the 

 entire surface, but the dark markings are in tlie male deep 

 blackish bronze and in the female reddish, becoming in the 

 latter regularly paler from the head backwards, until the 

 posterior division of the broad sutural mark becomes indis- 

 tinguishable from the testaceous ground-colour. The femora 

 in both sexes are pale and the tibiae and tarsi of the colour of 

 the dorsal markings according to the sex. 



As the result of a study of further examples I have to 

 confess to having, in the case of Hylamorpha rujtmana, 

 Arrow, fallen into the trap against which 1 have warned 

 others, this being nothing but a sexual form — the female of 

 //. elegans, Burm. My error is due to tiie fact that the two 

 specimens from which my description was drawn up were 

 from a separate collection, and the only two females in the 

 British Museum collection, as compared with a large series of 

 the other sex. This is very strange, especially as in a collec- 

 tion lent to me by Mr. H. S. Gorham, which I have recently 

 examiried, the males are less than twice as numerous as the 

 females. Burmeister a|)parently did not know the latter, for 

 he has described the sexes as " ? bright green ; (^ with legs 

 and elytra olivaceous," which is quite wrong, the discoloured 

 forms occurring equally in both sexes. The real distinction 

 consists in tiie front legs of the female being of a castaneous 

 colour and the middle and hind tibise brilliant golden green. 

 I'he front tibiie are also shorter and more strongly toothed in 

 this sex, the third tooth being past the middle. In the male 



