142 LAMELLICOBNIA. 



11. Macrodactylus zunilensis. (Tab. VIII. fig. 23.) 



Gracilis, fulvus, pilis recumbentibus Mvo-cinereis dense, elytrorum lateribus late sparsius, vestifcus ; antennis 

 rufis, clava nigra ; pedibus rufls, tibiis apice tarsisque ruf o- vel nigro-piceis ; clypeo qnam in M. subspinoso 

 angustiore,trapezoideo,apice truncato, angulis rotnndatis ; thorace angusto, medio minus dilatato et lateribus 

 post angulum band sinuatis ; corpore snbtns viridi-metallico, longe adpresso piloso. 



S . Prosterni spina postcoxali elongata, apice obtuse truncato, fulva ; ventre biseriatim pauciter (utrinque 2) 

 fulvo-setoso, versus apicem longitudinaliter canaliculate. 



Long. 9-10 millim. 



Hah. Guatemala, Cerro Zunil 4000 to 5000 feet (Champion). 



About 200 examples, presenting no noteworthy variation. The integument of the 

 thorax, as well as of the elytra, is testaceous-red and not metallic slaty-green, as in the 

 allied M. fulvescens. 



In profusion on flowers of arborescent Composite in the dry season (Champion). 



12. Macrodactykts siibmarginatus. 



Subgracilis, scbistaceo-viridis, elytris rufo-fulvis pilis brevibus recumbentibus flavo-cinereis vestitis; elytris 

 utrinque fere dimidio laterali suturaque denudatis, sericeo-nitidis ; antennis pedibusque rufis, tarsis 4 posticis 

 (et raro tibiis apice) rufo- vel nigro-piceis ; clypeo alveolato-punctato, anguste trapezoideo, recte angustato, 

 apice truncato, angulis rotundatis ; tborace sicut in M. mexicano et affinibus. 



J . Prosterni spina postcoxali mediocri, apice obtuso ; ventre utrinque seriatim uni- (bic illic bi-) spinoso ; 

 metasterno breviter setoso. 



Long. 10-11 millim. 



Hah. Mexico, Juquila (Salle). 



The pile is fine and scanty, leaving the colour of the integument, especially of 

 that of the lateral half of the elytra, and the metallic underside plainly visible. 

 I have adopted the MS. name given to the species in the Salle collection. 



13. Macrodactylns sericeicollis. (Tab. VIII. fig. 24.) 



M. submarginato proxime affinis. Obscure viridi-seneus (medio tborace aurato), pilis recumbentibus dense 

 vestitus, apud frontem et thoracis discum lsete fulvis, tborace lateribus corporeque subtus flavo-cinereis, 

 elytris denudatis, rufo-fulvis, sericeis (interdum metallescentibus), vitta lata snturali flavo-cinerea solum 

 vestitis ; antennis rufls, clava apice nigra ; pedibus nigris, femoribus (tibiisque anticis basi) rufis ; clypeo 

 sicut in M. submarginato, sed versus apicem paullo rotundatim angustato apiceque subsinuato, minus 

 distincte alveolate. 



S . Prosterni spina postcoxali rufa, apice obtuso ; ventre utrinque pauciter (1 vel 2) fulvo-spinoso. 



Long. 10-11 millim. 



Hah. Guatemala (Salle), San Geronimo, Purula, Coban, and Cubilguitz in Vera 

 Paz (Champion). 



A very large number of examples. The metallic colour of parts of the integument is 

 generally darker than in M. submarginatus, but is sometimes brighter golden-green. 



A specimen from Purula is figured. A common insect in various parts of Vera Paz 

 in the dry season (Champion). 



