172 n)E. ST. GEOEGE MI V ART ON THE [Mar. 5, 



in that the crura of its parahyal arch where they meet are not 

 prolonged into a symphysis. It is possible that a prolonged 

 syiuphysial portion may have been broken oif, but I cannot detect 

 any trace of the fracture. 



The urohyal is very short, but slightly deflected ventrally towards 

 its truncated distal end. 



The ento(/lossum is rather more prolonged compared with the 

 basihyal. It presents all the characters already noted in Lorius 

 and Eos. The ventral prominences of the preaxiad expansions of 

 the two entoglossals are in contact. 



The hypohrancMals were broken in the specimen examined, but 

 seem much like those of Lorius domicella, but perhaps a little 

 stouter. 



Steingops habeoptilus. (Pig. 6, p. 173.) 



The hyoid of Stnngo2}s differs altogether from those of Lorius, 

 Eos, and Trichoglossus, and has a general resemblance to that of 

 Psittacus erithacus. 



The basihi/al has its anterior part ranch deeper and more later- 

 ally compressed than in P. erithacus, while its posterior, sub- 

 quadrate part is hardly so much expanded laterally. The superior 

 margin of the basihyal, when laterally viewed, is more concave 

 dorsaUv, while its inferior margin is more convex venti-ally, the 

 bone being more bent concave upwards. There is hardly a 

 perceptible concavity on the dorsum of the saddle's upper lip. 

 The two halves of the posterior margin of the basihyal are each 

 more concave and form a more marked angle with each other. 

 The parahyal processes are longer, stronger, and while proceeding 

 forwards and very slightly inwards, ascend much more sharply 

 dorsad and slightly expand at their extremities. 



The urohyal is much as in P. erithacus, only more inclined 

 ventrad towards its distal end. 



The entoglossum has a narrower median vacuity than in P. eri- 

 thacus, while each anterior and posterior extremity projects more 

 outwards, especially the two anterior extremities, so that the 

 anterior half of each lateral margin is much more concave. The 

 dorsal surface of the entoglossum is also very much more flattened 

 than in P. erithacus. Thus the bony isthmus formed by the 

 median junction of the two inwardly projecting portions of the 

 two entoglossals (just in front of the basihyal saddle) is quite on 

 the dorsal surface of the entoglossum, instead of being sunk at 

 the bottom of a strongly marked concavity — as it is in Psittacus, 

 Lorius, Eos, and Trichoglossus. The dorsum of each entoglossal 

 process projecting back behind the bony isthmus is also flattened, 

 though faintly grooved antero-posteriorly. 



Seen ventrally, each entoglossal presents a wide shallow concavity 

 at its laterally expanded preaxial end. Behind this is the 

 prominence of the anterior lateral process, and behind this again is 

 the marked concavity (looking externad as well as ventrad) of the 

 hindermost part of each entoglossal. 



1 



