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and united to the band by green-blue silvery atoms along 

 the nervures ; the base is darkest ; between the median 

 and submedian nervures (in reality on the upper part of 

 the abdominal pouch) is a brilliant silvery ultramarine 

 blue, greenish towards the base, and modified midway by 

 black atoms. Indeed the colours all over the insect are 

 remarkably like those of the richest humming-birds, and 

 are modified in a similar manner. The chief veins are 

 well expressed. 



Under surface of Secondaries : Warm purplish velvety- 

 black ; with an extensive mark composed of silver blue 

 atoms between the costal and median veins, most dense 

 and brilliant towards the base — a similar spot almost 

 filling the precostal cell ; an elongate congeries of blue 

 atoms between the 1st and 2nd subcostal branches, and 

 a rather obscure and narrow elongate congeries within 

 the basal part of the cell ; a submarginal row of 4 or 5 

 very small cuneiform spots, divided by the nervules, runs 

 parallel to the hind margin : these are reddish white. 

 The black of the hind margin of the wing is subdued by a 

 whitish gloss ; the crimson scales of the thorax encroach 

 prominently on to the base of the wing. 



Thorax : With a broad crimson pronotal collar ; the 

 thorax below the neck is of a deep pilose velvety-black. 



Head : Eyes castaneous and large ; the tuft between 

 the eyes is black and prominent ; antennas very black, and 

 straight. 



Underside of thorax : the legs are all stout and 

 intensely black : the femora almost entirely concealed in 

 the black and crimson scales, which also encroach slightly 

 on the 1st articulation of the abdomen ; the legs are 

 reddish black; the spirotromp reddish black. 



Abdomen, above and below, a silky-greenish black ; 

 abdominal fringe long, curved, and black. 



The abdominal pouch or fold, produced as it is by a 

 long, nearly lenticular continuation of the abdominal 

 margin, folded over away from the body, lies very close 

 to the under part of the wing — so close indeed that it is 

 difficult even to insert a needle, if the specimen be a new 

 one, and the reddish ochraceous androconia are packed 

 far away in the pouch ; the abdominal fringe is greyish- 

 black, and fairly long. [See PI. 27, fig. 4.] The under 

 surface of the fold is velvety black, with the fringe looking 

 very silky. [PI. 27, fig. 5.] 



The pseudoneura in the primary cell are very obscure ; 

 but they closely resemble that of T. Brookeana. 



Expanse of costa, 95 mms. : width of primary wings, 

 45 mms. ; length of secondary wings, 45 mms. ; width, 

 35 mms. ; length of outer margin, 73 mms. 



Length of abdomen, 32 mms. ; of thorax with head, 

 27 mms. ; of antennae, 37 mms. Articulations of antennas, 

 54 in number. 



Hab. Palawan, Philippine Islands, situated about 100 

 miles from the North Coast of Borneo. 



In the museums of Mr. H. Grose-Smith, the Hon. 

 Walter Rothschild, Mr. George Semper, Herr Honrath, 



j &c. 



A comparison of this species with T. Brookeana furnished 

 1 several important differences, sufficient to entitle it to a 

 \ separate specific rank — that is, as species are made ; 



though perhaps we may readily regard it as only a local 



form of the former. 



1st. The insect is larger and altogether more massive 

 in appearance than T. Brookeana. 



2nd. The beautiful green hastate marks are relatively 

 shorter and broader, and more leaflike. 



3rd. They are broadly separated from each other, while 

 in Brookeana these are near each other ; and the two lower 

 ones actually coalesce. 



4th. On the secondary wings there is only a moderately 

 narrow discal green band, while in Brookeana the green 

 occupies all the centre of the wing, leaving a broad sub- 

 marginal black band, and only a narrow area of basal black. 



5th. The abdominal fold is violet-green and black — the 

 black prevailing ; in Brookeana it is entirely green. 



6th. The abdomen is longer relatively than that of 

 Brookeana, and more slender ; while the red pronotal 

 collar is broader and not divided into two parts as in 

 Brookeana. 



7th. The abdominal fringe is denser than in Brookeana. 



8th. On the underside of the wings, the green discal 

 marks of the primaries are more slender, and the pairs 

 are not united as in Brookeana, they are also shorter ; in 

 the latter also are 2 vein-divided white submarginal spots, 

 but these are absent from T. Trojana. 



gth. On the secondaries the submarginal vein-divided 

 white spots are small, and do not form an entire band 

 parallel to the margin of the wing, but in Brookeana they 

 do this, are larger and more conspicuous, and are flanked 

 with an inner series of white hastate discal marks. 



10th. The antennas are longer than the abdomen ; in 

 Brookeana they are the same length. 



This splendid species was first sent to Herr Honrath 

 by Dr. Platen, who at an early period discovered and 

 sent to Dr. Staiidinger the interesting species of 

 Pompeoptera P. Plateni, Staiidinger, which seems so 

 remarkably like a transitional form towards P. Doherty, 

 Rippon, and P. Iris, Robur. 



The 2 of this species has yet to be discovered ; but 

 it will probably resemble that of T. Brookeana. 



