new genera and species of Cryj^tocephalidcB. 229 



on the outer margin, but narrowed and interrupted towards 

 the suture, abbreviated at some distance from the latter, 

 dull fulvous-yellow; outer edge of epipleural lobe, together 

 with the inflexed limb from its base nearly to its apex, 

 pale yellowish-white. Body beneath pale yellowish -white, 

 clothed with adpressed griseous hairs; the middle of the 

 breast, the pleurae and a transverse basal line on the second 

 and third abdominal segments, black. Pygydium rugose- 

 punctate, yellowish-white, two small spots on either side 

 and another at the base', black. 



Genus AcoLASTUS, Gerst. 

 Acolastus Simonsi. 



Anguste oblongus, subcylindricus, niger, pube adju'essa 

 albida vestitus; subtus nitidus, genubus tarsisque auran- 

 taceis ; supra subnitidus, capite thoraceque rugosis; illo 

 fortiter punctato, mandibulis basi, labro, clypeo postico 

 punctisque duobus inter oculos aurantaceis; hoc transverso, 

 aurantaceo, lateribus antice rectis, basi oblique rotundatis 

 aut obliquis; dorso rugoso-punctato, parce albido setoso, 

 ante basin transversim depresso ; utrinque vitta lata 

 irregulari, ante apicem desinenti, una ante scutellum 

 brevi (his vittis basi connexis), nigris; scutello transverso, 

 trigonato, basi leviter elevato, ad apicem excavato ; elytris 

 glabris, crasse rugoso-punctatis, hie illic elevato-\attatis ; 

 aurantaceis, sutura, callo humerali, macula inter basin et 

 medium maculisque tribus pone medium, harum macula 

 medial! communi, lateralibus ad marginem adfixis, fasciam 

 interruptam formantibus, nigris, ornantibus. 



Var. A. Thorace nigro, lateribus, apice intus dilatatis, 

 maculaque apicali, disci medio posita, aurantaceis. — Mas. 



Long. 2 lin. 



Hab. — Lake Nyassa ; collected by Mr. Simons. 



Head strongly and closely punctured, sparingly clothed 

 with white hairs ; clypeus more distinctly punctm-ed, its 

 apex deeply emarginate; eyes oblong-ovate, moderately 

 sinuate, antennas black, the third to the sixth joints obscure 

 piceous. Thorax at itsAvidest part nearly twice as broad 

 as long; sides obliquely diverging for one-third their 

 length, thence straight and scarcely converging to the 

 apex;* basal margin distinctly siiuiate on either side the 



* In one of the two specimens before me the liasal tliird of the lateral 

 b():iler is obtusely rounded ; in the other it is neaily btraiglit, and loniis 

 a distinct angle with the anterior portion. 



