144 LAMELLICOBNIA. 



5000 feet (Salvin), Duenas, Coban (Champion); Nicaragua, Chontales (Belt); Costa. 

 Eica (Salle, Van Patten), Volcan de Irazu 6000 to 7000 feet (Bogers). 



17. Macrodactylus suavis. (Tab. IX. fig. 1.) 



M. costulato affinis, adhuc gracilior ( S angustus, elongatus) ; tborace subovato, medio rotundato-dilatato 

 parum angulato ; scutello cinereo-pubescente. Viridi-seneus, elytris dimidio basabi fulvis raro toto viridi- 

 seneis, tborace lateribus et vitta interrupta dorsali cinereo-pilosis ; elytris utrinque bicostulatis, sutura, costa 

 exteriore et lateribus (late) denudatis, interdum costa prima autem nuda, raro costis totis pube fulvo- 

 cinerea tectis ; antennis (clava interdum inf'uscata) pedibusque rufis, tibiis 4 posticis apice tarsisque 

 nigris ; pygidio seneo (interdum rufo vel flavo), polito, parce punctato-piloso ; clypeo angusto, trapezoideo, 

 lateribus versus apicem rotundatis, apice obtuse sinuatim truncato. 



c? . Prosterni spina postcoxali valida, setosa, apice obtuso ; ventre biseriatim fulvo-setoso, setis utrinque 1 vel 2. 



Long. 9-10 millim. 



Hab. Costa Eica (Van Patten), Volcan de Irazu 6000 to 7000 feet, Cache (Bogers); 

 Panama, Bugaba, near the city (Champion). 



Var. Paullo major (11 millim.), tibiis 4 posticis nigris. 



Hob. Nicaragua, Chontales (Belt). 



Examples with yellow or obscure reddish pygidium are from Bugaba only, mingled 

 with others of the normal colour. 

 A specimen from Bugaba is figured. 



18. Macrodactylus sericinus. (Tab. IX. fig. 2.) 



M. suavi proxime affinis ; differt corpore robustiore ; elytris glabris, sericeis, castaneo-rufis, dimidio posteriore 

 nigris, interstitiis sequalibus, paullo convexis ; capite tboraceque fusco-seneis vel cupreis, boc alutaceo et punc- 

 tulato, pilis nonnullis cinereis apud marginem et lineam dorsalem; antennis pedibusque rufis, tarsis 

 omnibus tibiisque 4 posticis nigris : pygidio nigro-seneo, medio cinereo-piloso. 

 S . Prosterni spina postcoxali apice angustiore ; ventre biseriatim pauciter (utrinque 1 vel 2) setoso. 



Long. 10 millim. 



Hab. Nicaragua (Salle), Chontales (Belt, Janson). 



The thorax in this species has a similar subovate outline to that of M. suavis. 



19. Macrodactylus sylphis. (Tab. IX. fig. 3.) 



M sericino affinis; magis elongatus, angustus; elytris glabris, fulvis, lsete sericeo-nitentibus, plerumque versus 



basin et suturam setis validis nigris obsitis; tborace medio rotundato-angulato, (cum capite) viridi, 



lateribus vittaque dorsali (et scuteUo) cinereo-pilosis ; antennis pedibusque rufis, tarsis tibiisque posticis apice 



nigris • corpore subtus viridi-ameo, cinereo-piloso ; pygidio testaceo-rufo senescente. 



J. Prosterni spina postcoxali nulla; ventris setis paucis, parvis et subtilibus ; pedibus posticis maxime 



elongatis. 

 Var. Pygidio nigro-aeneo, medio cinereo-piloso. 

 Long. 11-14 millim. 



Hab. Nicaragua, Chontales (Belt, Janson) ; Panama, Bugaba (Champion). 

 The form or variety with dark brassy pygidium appears confined to Chontales, that 

 with yellow pygidium to Bugaba; one of the latter is figured. 



