19U5.] 65 



these organs "' very slender, the basal joint nearly as long as the head 

 and thorax," and to Urochela those with the antennse " stouter, the 

 basal joint not twice the length of the head, much shorter than the 

 head and thorax.' In the B'auna of British India, Rhi/nchota, i, 1902, 

 p. 303, Distant maintains the same division. I may observe, by the 

 way, that he adduces as a character for the whole family the short 

 rostrum, although 1 have as early as in 18S I, in the Berl. ent. Zeitschr., 

 described a genus, EurhijncJdocori.s, whose rostrum reaches as far as 

 the point of the fourth abdominal segment. 



Mr. Schouteden has now sent to me for determination a species 

 belonging to this family (with a short rostrum), possessing distinct 

 ocelli, but whose first autennal joint is not twice the length of the 

 head and scarcely as long as the pronotum. It could not, therefore, 

 be referred to the genus Urostylis, and the body is more elongate and 

 the antennae are more slender than in Urochela. The whole habitus 

 reminds one of Urostylis. The characters given for these genera by 

 Dallas, therefore, require modification, as the new species is un- 

 doubtedly, notwithstanding its shorter antennae, a Urostylis. 



There is in fact a character, which seems to be of far greater 

 systematic value than the length of the antennse, the structure of the 

 spinous odoriferous orifices, a character which, indeed, is reproduced 

 in Distant's drawings of these three genera {J. c, figs. 191, 195, 196), 

 although he has not attached any particular weight to it. In Urochela 

 the basal portion is somewhat tumid and the sulcated spinous apical 

 piece short, in Urostylis and Urolabida this, on the other hand, is long. 

 Urolahida might almost be regarded as a blind form of Urostylis. 



The new species, whose diagnosis is given below, I have called 



UliOSTl'LlS INSTEUCTIVUS, Sp. n. 

 Viridis, glaber ; capite laevi, ocellis distinctis : proiioto remote nigro-punctato, 

 margine apicali reflexo, lateribus tenuiter marginatis, apicem versus leviter rotun- 

 dafcis, pone medium late sinuatis ; scutello area basali elevata, triangular!, remote 

 nigro-punctata, parte apicali depressa, parce fortius nigro-punctata ; hemelytris 

 laevibus, solum clavo serie scutellari endocorioque serie juxta suturam clavi crebre 

 punctatis, ectocorio remote fortius punctato ; membrana fumato-hyalina ; antennis 

 gracilibus, virescentibus, articulo primo pronoto longitudine subaequali, secundo 

 primo parum longiore, tertio secundo circiter duplo breviore, nigricanti (reliqui 

 desunt) ; rostro medium mesosterni attingente ; tibiis apice tarsisque superne nigri- 

 cantibus ; corpore inferne laevi ; mari segmento genitali utrinque processu horizon- 

 tali porrecto apicem versus incurvato. Long., (J , 'J mm. 



Hah. : India, Silhet. 

 Helsingfors : February , 1905. 



