494 Linnaan Society. 



per dimidium posticum suturae extensa ad apicem recurva et cum 

 margine externo parallela fulva; pronoto linea impressa media; disco 

 baud setoso, pedibus rufo-castaneis. — Long. corp. lin. 6. 



Hah. in Africa occidentali tropica apud " Rio Grande," inter Gambiam et 

 Sierram Leonam. 



In Mus. D. La Fertei. 



Obs. The club of the antennae is 2^rd longer than broad ; the ter- 

 minal joint is equal in length to the ninth, eighth, seventh, and ^rd 

 of the sixth joints. 



Cerapterus (Orthopterus) concolor, Westw. 



C. totus obscure castaneus nitidissimus, elytris magis nigricantibus ; pro- 

 noto linea media longitudinali vix distincta ; elytris basi et lateribus 

 punctis setiferis instructis ; disco magis evidenter punctato, tibiis rufo- 

 castaneis. — Long. corp. lin. 6. 



Hah. apud Portum Natalensem Africae meridionalis. 



In Muss. Brit, et Fortnum. 



Obs. The club of the antennae is 2|rd times longer than broad ; 

 the seven intermediate joints are of equal breadth, the last joint is 

 rather convex, and as long as the ninth, eighth, seventh, and half of 

 the sixth united. 



It is impossible, without a comparison with Mr. W. S. Mac- 

 Leay's original specimen of C. Smithii, to determine whether this 

 species may not prove a concolorous variety of that insect. Judging 

 from the description and figure of the antennae however, this suppo- 

 sition appears very doubtful. 



Subgenus Arthropterus. 

 Cerapterus (Arthropterus) denudatus, Westw, 



C. piceo-castaneus subnitidus tenuissime punctatus, elytris magis nitidis, 

 antennis angustis planis ; articulo ultimo duobus praecedentibus longi- 

 tudine aequali, capitis angulis posticis porrectis, prothorace capite 

 paullo angustiori supra subdepresso truncato-cordato linea media 

 impressa, pedibus subangustis ; tibiis omnibus angulo externo apicali 

 acuto. — Long. corp. lin. 6. 



Hah. in Nova Hollandia, ad ripas fluvii " Mundarra " dicti. 



In Mus. F. Bond. 



Cerapterus (Arthropterus) Wilsoni, Westw. 



C. totus castaneus nitidus, capite parvo punctato et inter oculos bi- 

 impresso : angulis posticis vix ultra oculos lateraliter porrectis, anten- 

 narum clava subangusta sub lente tenuissime granulata ; articulo 3tio 

 clavae latiori : ultimo angustiori longitudine vix tribus praecedentibus 

 aequali, pronoto subquadrato punctato : angulis anticis rotundatis : disco 

 haud longitudinaliter sulcato ; elytris elongatis tenuissime punctatis : 

 punctis ad basin majoribr.s castaneis : sutura magis fulvescenti, pedibus 

 angustis; tibiis vix tarsis duplo latioribus. — Long. corp. lin. 7. 



Hab. in Novae Hollandiae Adelaide, D. Wilson. In Mus. Westw. 



Cerapterus (Arthropterus) subsulcatus, Westw. 

 C. totus castaneus, capite punctato inter oculos baud impresso : angulis 

 posticis pone oculos valde porrectis, antennis tenuissime punctatis clava 

 sensim a basi ad articulum ultimum latiori; articulo ultimo sexta parte 

 latiori quam longo tribusque articulis praecedentibus longitudine sub- 

 sequali, pronoto punctato cordato-truncato : sulco longitudinali medio 



