324 Mr. W. F. H. Blandford on 



symmetrical ; and though they do not occur in any Ceylonese 

 or Burmese examples, do not appear to be indicative of a new 

 species. 



Tn a previous paper on the Scolytldai of Japan (Trans. 

 Ent. Soc. 1894, p. 127) I suggested that there were grave 

 doubts as to the accuracy of the application of the sexual 

 characters throughout Chapuis's 'Monographic des Platypides.' 

 The hesitation I then felt as to the necessity of reversing the 

 sexual dfstinctions throughout his work has since been dis- 

 pelled. Hopkins, in a paper on the sexual characters of 

 North-American Scolytids as ascertained by dissection 

 {Canad. Ent., Oct. 1894), reverses tlie sexes of the species of 

 Platypus therein dealt with. I propose in future to do the 

 same throughout the subfamily, with the exception, perhaps, 

 of one or two monotypic genera which are not available for 

 dissection. 



Crossotarsus venustus, Chap. 

 Crossotarsus venmtm, Chap. Mon. Plat, p. 88, S {^^9^ $ )• 



(S . Ferrugineo-piceus, capita et elytrorum apice infuscatis ; fronte 

 subconcava, opaca, posterius profunde punctata, striga media 

 longitudinali impressa ; Tertice subopaca, subtilius irregulariter 

 punctata, liuea media nitida obsoleta ; prothorace latitudine sub- 

 longiore, subtiliter irregulariter punctato, sulco brevi baud pro- 

 fundo, disco ante sulcum subimpresso ; elytris lineato-punctatis, 

 lineis ad basin impressis, interstitiis planis tenuiter Hneato- 

 punctatis, apice declivi, convexo, striate, interstitiis elevatis, 

 seriato-tuberculatis et pilosis, angulis externis productis, margine 

 externo singulo a lateris apice crena acuta separate, inde intus 

 curvato, serrato, cmarginatione media profunda, angulis sutu- 

 ralibus productis acutis, impressione apicali lunata, nitida, sub- 

 concava. 



Long. 4 mm. 



Hah. Ceylon, Dikoya. A pair. 



The male, the characters of which must refer the species to 

 the Crossotarsi suhdepressi^ appears to be nearly allied to 

 C. terminatuSy Chap., which it resembles in shape, having 

 the apical processes of the elytra incurved and separated by a 

 narrow deep emargination. It differs from the description 

 and figure of that species (I have not seen the type) in the 

 tact that the elytra are abruptly narrowed at the commence- 

 ment of the declivous portion, the outer margins of which are 

 separated from the sides by a sharp toothed angle. 



