BY W. MACLEAY, ESQ., F.L.S. 361 



horns, the middle one straight, the others diverging ; in front of 

 this elevation, and near its base, there is a triangular transverse 

 " carina," joined at the apex of the triangle by a straight carina 

 proceeding from the middle horn ; behind this the head is 

 smooth and concave on each side. The thorax is shortly retuse 

 and perpendicular in front from side to side, and is armed on the 

 summit of the retuse portion with four strong pointed horns ; 

 two near the centre, diverging considerably, and one near each 

 anterior angle. The sides are roughly punctuate, and behind 

 and a little outside of each of the centre horns there is a very 

 deep fovea. The elytra are very finely striated, with the inter- 

 stices smooth. 



BOLBOCERAS PDNCTICOLLB. 



Long. 6|lin. 



Piceum nitidum capite antice transversim semicirculariter 

 elevato apicibus productis postice inter oculos bicornuto, 

 thorace antice parum retuso pone oculos alte foveato 

 omnino intervallis punctatis parce instructo, elytris sti'iato- 

 punctatis tibiis anticis extus 5 dentatis. 

 Femina capite antice transversim elevato tridentato, postice 

 inter oculos bituberculato, thorace vix retuso haud alte 

 foveato. 

 Hab. South Australia. 

 The male has a transverse elevation in front, produced at each 

 side into a strong horn, and behind, between the eyes, two 

 strong, conical horns. The thorax is a little retuse in front, with 

 a very deep fovea on each side of the retuse portion, and with 

 patches of rough punctures in various portions of the surface. 

 In thefemale, the head is tridentate in front, and bituberculate 

 behind, and the thorax is without the deep fovea. 



BOLBOCERAS LATICORNE. 



Long. 6 lin. 



Piceo-rufum nitidum capite antice punctato bicornuto — cornu- 

 bus fortibus subdivergentibus— postice Isevi ad latera 

 utrinque bidentato, thorace brevi punctato antice medio 



