RHAPHIDORRHYNCHUS LINEARIS. '217 



indicate undoubtedly R. linearis Senna. If we compare this 

 female with that of R. panamensis Senna, the differences 

 are the following: the head is broader, with the external 

 angles of the base less distinct, the antennae are longer 

 and have the 2^^ joint also longer, the elytra are not 

 spinous at the apex , the 2'"1 interstice along the suture 

 is more raised, and not depressed at the base, the 3rd 

 narrower; the disposition of the coloured lines is also 

 different. 



Rhaphidorrhynchus mexicanus Senna. 

 (I.e. p. 608). 



A male from Mexico , with a very shallow impression 

 on the vertex. — Length 17 mill. 



Rhaphidorrhynchus consanguineus^ n. sp. 



(ƒ. Capite, prothorace, rostri parte basali aeneis, laevi- 

 gatis; rostri parte antica, antennis, interdum etiam capite 

 et prothorace nigris ; elytris et pedibus nitidis, brunneo- 

 aeneis vel bruuneo saturato leviter aeneo , corpore infra 

 aeneo , nitido ; capite quadrato, angulis posticis rotundatis, 

 supra convexo, fronte plerumque distincte- raro obsolete 

 canaliculata, oculis modice prominentibus; rostro basi ca- 

 pite vix longiore , lateribus subparallelis , supra sulcato , ad 

 antennarum insertionem rotundato-ampliato, elevato, tuber- 

 culato ; parte antica longiore, quadrangulari, marginibus 

 elevato-dentatis , apicera versus leviter ampliata , scabrius- 

 cula; antennis elongatis, articulis 1° — 3° leviter scabris, 

 2° minime breviore quam 3°, casteris cylindricis, apicali 

 acuminato ; prothorace elongato-conico , laevi, parum nitido; 

 elytris basi emarginatis, humeris rotundatis modiceque cal- 

 losis, lateribus leviter curvatis, e tertio basali gradatim 

 attenuates, apice subtruncatis, in medio breviter emarginatis, 

 angulo externo retrorsum spinoso ; supra modice convexis, 

 juxta suturam anguste sulcatis, sulco 1° impunctato usque 

 ad declivitatem apicalem , interstitio 1° angusto; externe 



Notes frora the Leyden ]Museuixi, Vol. XVI. 



