M. H. Jekel on the Pollinosity of the Genera Lixus and Larinus. 13 



versies of MM. Coquerel and Laboulbene, and the experience of M. 

 Rojas*, all recorded in the ' Annales de la Societe Entomologique de 

 France,' 1851-1857. 



Hence the results in pollinose species are these : specimens may 

 have their pollinosity more or less rubbed off, and show underneath 

 part of the ground squamose tomentosity ; others may be completely 

 deprived of that pollinose efflorescence, and show the ground tomen- 

 tosity only ; finally, others, still more rubbed, show only a portion of 

 the latter, &c. Any entomologist, therefore, in describing either 

 squamose, tomentose, or pollinose species, should not content him- 

 self with the description of so variable a substance only, but note 

 also if there is another layer beneath it, and, in fine, should lay 

 bare the derm in order to display its characters. 



Exclusive of hair or pile, to which (like naked Coleoptera) squamose, 

 tomentose, or pollinose species are Liable, one might divide them, 

 according to the composition of their clothing, as follows : — 

 1. Col. Monolepida : having a single layer of squamosity or tomen- 

 tosity, with or without denser markings. 



* One of M. Rqjas's observations bears on a species of Lixus, inhabiting Vene- 

 zuela, that I called L. vittatus in lift., intending to describe it in its proper place in 

 ' Insecta Saundersiana.' I think it now preferable to profit by this opportunity to 

 give a complete diagnosis of the species, and change its name, 1st, in honour of 

 that zealous entomologist ; 2ndly, because, as that gentleman observes, very fresh 

 specimens are so densely covered with sulphureo-ochraceous pollinose dust, 

 and others, entirely rubbed off, are so completely destitute of it, that the vitta 

 are hardly discernible. 

 Li-rus Eojasi, Jekel (L. vittatus, Jekel, litt. ; Rojas, Ann. Soc. Entom. France, 



1857, p. 330, without description). 

 Elongatus, postice latior, niger, subnitidus. polline sulphureo-ochraceo in maculis 

 lateralibus inferis vittisque elytrorum densius tectus ; rostro terete, arcuato, 

 leviter punctulato et canaliculato ; capite profundius punctulato ; thorace 

 elongato, angusto, dorso densissime levissimeque punctulato, cum punctis 

 majoribus remotis, medio linea tenuissima basi ante scutellum profunde im- 

 pressa, lateribus lrevioribus, politis ; scutello haud conspicuo ; elytris pone 

 medium ampliatis, lateribus paulo compressis, apice conjunctim obtuse acutis, 

 ad suturam tantum paulo divergentibus, dorso bifariam pimctatis, sutura, 

 margine, interstitiis duobus ilia connexis alternisque dorsalibus elevatis, sub- 

 politis, alternis angustioribus, impressis. praesertim antice et postice, fundo 

 polline plus minusve repletis. 

 Longit. (rostr. 4-5=| mill, excl.) 16-22. Latit, bas. thor. "et elytr. 4^-5^ — pone 

 med. elytr. 6-7 mill. 



$ minor, angustior, rostro thorace breviore, minus arcuato ; thorace sub- 

 cylindrico, h. e. ante medium haud angustiore quam basi ; elytris modice 

 convexis, ante medium haud fornicatis. 

 $ rostro longitudine thoracis; thorace lateribus versus apicem conico- 

 angustatis ; elytris ante medium subfornicato-convexis. 



