106 Mr. Malcolm Burr’s Preliminary Revision of the 
TABLE OF GENERA. 
1. Elytra haud carinata . . . . . 1. SARAKAS, n. 
1.1. Elytra carinata. 
2. Elytra tantum per dimidium 
longitudinis carinata . . 2. OSTEULCUS, n. 
2.2. Elytra per totam lonaieuea 
carinata. 
3. Elytra trapezoidea; rudiment- 
aria ; ale nulle Pista) Oe L RAOS. ome 
3.3. Elytra perfecte explicate. 
4, Abdomen lateribus iner- 
mibus.iy ii eines 2. ives me 
4.4, Abdomen  lateribus in 
spinas et mucrones pro- 
ductis .. . . . . 5. ANcISTROGASTER, Dohrn. 
Genus 1.—SARAKAS,* nov. gen. 
Ancistrogastri vicinum genus, sed :—elytra haud carinata ; lateri- 
bus abdominis minus fortiter armatis, vix tuberculatis, vix 
mucronatis. 
Type of the genus. —Opisthocosmia _devians, Dohkrn., 
1865, Stett. ent. Zeit. vol. xxvi, p. 79. (Brazil.) 
The genus is characterised ‘by the absence of keels at 
the shoulder of the elytra; the sides of the abdomen 
are not strongly hooked but armed with tubercles. 
It includes also Opisthocosmia atervima, Borm., Ann. 
Soc. Ent. Belg. xxvii, p. 83 (1883), and perhaps 0. longipes, 
Haan. 
Genus 2.—OsTEULCUS,} nov. gen. 
Antenne gradatim elongate ; pronotum sublatius quam longius, 
planum: elytra punctulata, Spree ee brevia, margine postico 
oblique truncata ; costa humerali ad humeros carinata, carina in 
medio elytri evanescenti; ale null; pedes graciles, sat longi; 
abdomen basi angustum, medio fortiter dilatatum, sat depressum ; 
apicem versus attenuatum ; segmentum ultimum dorsale subangus- 
tatum, transversum, latum ; tuberculis lateralibus distinctis ; seg- 
mentis 5, 6 et 7 etiam tnberciilsta 5 pygidium haud perspicuum ; 
forcipisbracchia ¢ sat robusta, depressa, basi remota et divergentia, 
* gdpaxas = wood-eater. 
{ doreovAKés = forceps. 
