Trigonophorus and Rhomborhina. 91 
Syn. Rhomborhina microcephala, Westw. Arc, Ent. 1, pl. 30. 
fig. 3. 
Anomalocera Meares. Burm, Handb, d. Ent. 3, p. 781. 
The habit of this species is so entirely that of the other Rhom- 
borhine that I cannot agree with Dr. Burmeister in removing it to 
the genus Anomalocera, especially as the form of the mesosternal 
process is variable in the other Rhomborhine. It is proper, how- 
ever, to add, that females only have yet been received of this spe- 
cies. The male, when known, will more satisfactorily enable us 
to settle the question. 
XX. Description of an Asiatic Genus of Lamellicorn Beetles 
belonging to the Family Rutelide. by J.O.Wexstwoop, 
Poke: 
[Read July, 1841.] 
Family RUTELIDZ. 
Genus Parastasia, Westw. (PI. VI. fig. 1, 2, 3.) 
Corpus supra valde gibbosum, pedibus brevissimis. 
Caput mediocre humile, antice in medio bituberculatum, tuber- 
culoque minori utrinque supra originem antennarum (fig. 2a). 
Antenne breves, 10-articulate. 
Labrum bilobum, sub clypeum bilobum, fere occultum, ciliatum 
(fig. 2b, Ze). 
Mandibule (fig. 2d, 2e) cornee, ad apicem extus curvatee 
(fig. 2c), angulo externo in dentem subrecurvum et promi- 
nentem producto, margine externo in medio subangulato, 
interno membranaceo et ciliato, portio molaris (fig. 2/) parva 
transverse strigosa, carina elevata fere rotundato-ovalis in 
medio notata. 
Mazxille cornex, lobo externo producto tridentato (interdum 
4-dentato), dente interno obsolete tridenticulato vel trifido 
(inde maxilla 5- vel 6-dentate evadunt) (fig. la, 1b, 2g). 
Palpi maxillares 4-articulati, articulo 2do praecedenti majori ; 
apicali longo-ovali, apice subacuto (fig. 2). 
Mentum oblongum, lateribus versus basin rotundato-dilatatis 
(fig. 2h). Palpi labiales ante apicem inserta, 3-articulate. 
Labium supra vix videas, margine antico ciliato. 
