494 Linnean Society. 
per dimidium posticum suture extensa ad apicem recurva et cum 
margine externo parallela fulva; pronoto linea impressa media; disco 
haud setoso, pedibus rufo-castaneis.—Long. corp. lin. 6. 
Hab. in Africa occidentali tropica apud “ Rio Grande,” inter Gambiam et 
Sierram Leonam. 
In Mus. D. La Fertei. 
Obs. The club of the antennz is 21rd longer than broad ; the ter- 
minal joint is equal in length to the ninth, eighth, seventh, and 4rd 
of the sixth joints. i 
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. 
Hab. apud Portum Natalensem Africe meridionalis. 
In Muss. Brit. et Fortnum. 
Obs. 'The club of the antennz is 21rd 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 antennz 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 precedentibus longi- 
tudine zequali, 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. 
Hab, 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 
clave latiori: ultimo angustiori longitudine vix tribus praecedentibus 
zequali, pronoto subquadrato punctato : angulis anticis rotundatis : disco 
haud longitudinaliter sulcato; elytris elongatis tenuissime punctatis : 
punctis ad basin majoribus castaneis : sutura magis fulvescenti, pedibus 
angustis; tibiis vix tarsis duplo latioribus.—Long. corp. lin. 7. 
Hab. in Nove Hollandiz Adelaide, D. Wilson. In Mus. Westw. 
Cerapterus (Arthropterus) subsulcatus, Westw. 
C. totus castaneus, capite punctato inter oculos haud 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 pracedentibus longitudine sub- 
zequali, pronoto punctato cordato-truncato: suleo longitudinali medio 
