136 LAMELLICOKNIA. 



zone. They differ from the Sericce of the Old World and temperate North America by 

 the somewhat narrower hind coxas and the diminished number of antennal joints, 

 viz. 8 or 9. 



1. AstaBna macilenta. 



A. cognatce (Burm.) affinis et similis ; differt corpore multo angustiore ; cylindrica sat elongata, senescenti-rufa, 

 pruinosa, sericeo-opaca ; capite nitido, sparsim*punctulato, clypeo transversim quadrato, angulis rotundatis, 

 margine alte elevato ; thorace lateribus medio angulato, antice et postice mediocriter angustato, angulis 

 posticis acutis ; elytris punctulato-striatis, interstitiis convexis ; pygidio laevi. 



Antennae 8-articulatae ; tibiae anticae 3-dentatae. Coxae posticae ventris segmentum primum haud tegentes. 



Long. 10 millim. $ . 



Hab. Costa Eica (coll. Bates). 

 One example. 



2. Astaena opalicauda. 



Serica holosericece (Scop.) subsimilis, sed magis elongata thoraceque medio angulatim dilatato ; fusco-rufa, opaca 

 pruinosa, elytris certo situ laete opalescentibus ; clypeo subquadrato, angulis rotundatis, fere laevi, margi- 

 nibus late et alte elevatis ; fronte nigra, punctata ; tborace et elytris passim discrete punctulatis, his 

 punctato-striatis, interstitiis paullo convexis ; pectore et ventre ( d 1 ) medio dense fulvo-pilosis. 



Antennae 8-articulatae ; tibiae anticae 3-dentatae ; coxae posticae extus latiores, medium segmentum secundum 

 tegentes. 



Long. 9 millim. $ . 



Hab. Nicaeagua, Chontales (Janson, coll. Bates). 

 One example. 



Subfam. MACBOBACTYLIN^. 



FAULA. 



Faula, Blanchard, Cat. Coll. Ent. i. p. 124 (1850). 



Ceraspis pars, Burmeister, Handb. der Ent. iv. 2, p. 100 (1855). 



Distinguished from Ceraspis, according to both the authors above cited, by the 

 uncleft tarsal claws. Blan chard erroneously placed F. cornuta (Ceraspis rufipes, 

 Burm.), which has bifid claws, at the head of the genus, guided doubtless by the 

 similarity of general form (the numerous spines of Faula being greatly elongated) and 

 the subglabrous surface. F. cornuta and its allies being excluded, the genus is not Well 

 demarcated by facies from Ceraspis, and is by some authors considered only as one 

 of the groups of that genus. So far as at present known, Faula is restricted to the 

 northern part of Tropical America. 



l. Faula pilatei. (Tab. VIII. fig. 11.) 



Ceraspis pilatei, Harold, Ann. Soc. Ent. Er. 1863, p. 174 \ 

 Hah. Mexico, Teapa *, Juquila (Salle). 



