Trunratipennes.'] adepiiaga. 133 



1. Basal joints of antennae pubcsceut; apex of elytra 



membranous PoLYSTlcntrs, Bon. 



2. Basal joints of antennae glabrous j apex of elytra 



not membranous. 



A. Penultimale joint of tarsi strongly bilobed. 



a. Tarsal claws simple ; paraglossse projecting 



considerably beyond ligula, crescent-shaped AiiTOPHOEUS, Schm.-Goeb. 



b. Tarsal claws pectinate; paraglossaj not or 



hardly projecting beyond ligula .... Demeteias, Bon. 



B. Penultimate joint of tarsi not bilobed but 

 plainly emarginate J tarsal claws strongly pec- 

 tinate Lebia, Latr. 



C. Penultimate joint of tarsi simple. 



a. Tiusal claws simple LlONYCHCS, Wiss. 



b. Tarsal claws pectinate. 



a*. Base of thorax with an indistinct fringe 

 of short hairs ; labial palpi of male some- 

 times strongly dilated and securiform ; 



length 8-10 mm Cymindis, Lair. 



h*. Base of thorax without trace of fringe 

 of short hairs ; labial palj)i always simple ; 



length 6-6.V mm. at most. 

 af . Posterior tarsi with the last joint 



about equal to the first ; base of thorax 



truncate Deomujs, Bon. 



bf. Posterior tarsi with the last joint 



plainly shorter than tlie first ; base of tho- 

 rax extended behind posterior angles. 



aj. Mentum not toothed Blechuus, Mots. 



bj. Mentum toothed Metauleivs, iickm.-Goeb. 



MASOREINA. 



The Masoreina are distinguished by the long spurs of the tibia?, and 

 transverse thorax which is slightly produced in the middle of base ; they 

 are placed l)y Bates among the true Truncatipennes, to which grouj) they 

 certainly belong, although tluiir elytra are only subtruncate ; Horn, fol- 

 lowing Thomson, classes them with the Anchomenina, and regards 

 them as separated fronr the Anchomeni by the slightly lobed base of 

 thorax ; they may be looked upon as a transitional genus (in which light 

 liedel eviilently regards them, as he places them between Olisthopus and 

 Anchomenus on the one hand, and the Lebiina on the other), but 

 this may be more ti-uthfuUy said of other undoubtetl Truncatipennes, 

 e.g. genera of Thyreopterinre, which are exactly like Anchomeuiua, and 

 can only be distinguished by dissection of the mouth. 



MASOREUS, Dejean. 



This genus comprises abt)ut twenty species, which are widely dis- 

 tributed over Africa, Asia, and Europe, two or three o-^curring in Java, 

 one in Cuba, and one in the Canary Isles ; they live in sandy districts, 

 and are found usually at the roots of grass and plants or under stones in 

 sand-hills and other dry localities ; we possess but one species, which 

 when alive has very much the appearance of a large TrechuK viiiiiif/t.-'. 



