44 LTCID^. 



parallel, each with nine parallel costge, the alternate ones less elevated 

 and sometimes very obscure. 



The type of this genus is erythropterum, Er. 



Porrostoma brevirostre. 



(Plate XI. fig. 4.) 



Waterk, Trans. Ent. Soc, 1877, p. 74, pi. i. iigs. 13-14. 



Nigrum ; elytris rufis. Long. 6 lia. 



Uab. N.W. coast of Australia, and Moreton Bay. 



Closely resembles P. ert/throptenim, Er., but has the rostrum 

 shorter, scarcely longer than broad. 



Porrostoma abdominals. 



(Plate XI. fig. 10.) 

 Waterh., Trans. Ent. Soc, 1877, p. 75, pi. i. figs. 19-22. 



Nigrum ; thoracis lateribus, elytris (apice excepto), coxis, femori- 

 bus basi abdominisque marginibus flavorufis ; rostro elongate, 

 sat acuminato ; antennis latis ; thorace septemareolato, postice 

 medio nigro ; elytris quadricostatis, interstitiis regulariter biseriatim 

 foveatis, seriebus costa tenuissima divisis, apice nigro. S , ? • 



Long. 6^ lin. 



Hab. East Australia, Queensland. 



J . Antennte broad, opaque, scarcely more than half the length 

 of the elytra ; the third joint about one third longer than its 

 greatest breadth, very little narrowed at the base, the lower an- 

 terior angle produced at right angles with the axis of the joint, 

 the produced part one third the length of the entire joint, obtuse 

 at its apex ; the fourth to eighth joints shorter, but of the same 

 form ; the ninth and tenth a trifle longer and having the produced 

 part more oblique. Thorax deeply bisinuate at the base. The 

 coxae, the femora (except at their apex), the sides of the first six 

 abdominal segments and the apical segments orange-red. 



The female has the antennae much less strongly dentate. 



Porrostoma elegans. 

 (Plate XI. fig. 6.) 

 Waterh., Trans. Ent. Soc, 1877, p. 75, pi. i. figs. 23-27. 



Nigrum ; thorace elytrisque ferrugineo-rufis, illo areolis poste- 

 rioribus in parte nigris, scuteUo nigro ; elytris parallelis, quadricos- 

 tatis (basi fere octocostatis), interstitiis regulariter biseriatim foveatis. 

 cT , $ . Long. 6 lin. 



Hah. Kockharnpton, Clai'cnce River, &c. 



