CERAMBYCIDAE. 



143 



15. Prosoplus ventralis, sp. n. 



Subcylindricus ($) ant postice angustior (<$), piceus aut nigricans, pilositate 

 adpressa flavescente aut obsolete virescente plus minusve clensa vestitus 

 maculisque perpaucis flavidis conspersus, sub vestimento nitidiusculus. 

 Antennae unicolores, nec punctatae nec annulatae, infra ciliatae, corpore 

 parum (<$) vel vix ($) longiores. Palpi rufobrunnei. Labrum et clypeus apice 

 ciliis flavis instructa. Frons transversa, punctata, minus dense griseo- 

 pubescens. Genae lobis inferioribus oculorum subaequales. Caput supra 

 inter antennas latissime sulcatum sulco postice angustato, triangulo. Pro- 

 thorax transversus, utrinque prope apicem dente valido armatus, ante dentem 

 constrictus, unicolor, flavescens, remote punctatus, ad basin leviter bisulcatus, 

 in medio linea angusta nitida, interdum obsoleta aut interrupta instructus. 

 Scutellum semicirculare, flavido-pilosum. Elytra ad basin pronoto latiora 

 humeris obtuse rotundatis, apice late et obtuse rotundata, ad basin fortius 

 subgranulatim punctata punctis apicem versus sensim minoribus, pube vire- 

 scente-flavida maculisque paucis flavescentibus seriatisi vestita, pube flavida in 

 medio fasciam latissimam trans versam, latera versus dilatatam, male definitam 

 aut obsoletam formante. Pedes griseo-pubescentes. Latera pectoris (saepe) 

 maculaeque magnae transversae laterales segmentorum 1-4 abdominis dense 

 aurantiaco-tomentosa. 



Long, corporis 9-14 mm. 



3, Antennae apicem elytrorum articulo 8° attingentes. Pedes antici 

 validiores femoribus incrassatis coxisque spina armatis. Segmentum ultimum 

 ventrale subplanum, haud lineatum. 



Antennae corpore baud vel parum longiores. Femora antica minus 

 incrassata coxis inermibus. Segmentum ultimum ventrale leviter convexum 

 linea media impressum. 



Three males and four females, all from Tutuila : Pago Pago, 20-27.ix.1923 ; 

 Afono, 25.ix.1923 ; Amauli, 5.ix.l923 (Swezey and Wilders) ; 760-900 ft., 

 18.iv. 5 18.xii. (Kellers). 



Easily distinguished from other known species by the large, orange-yellow, 

 well denned spots on the abdomen. 



