360 The Philippine Journal of Science 1923 



I have recently received material from Iligan, Agusan, Butuan, 

 and Surigao, Mindanao, and from Biliran Island that shows 

 a variability almost as striking as is shown by Prothyma 

 hopkinsi, but all these specimens are mere intermediate forms 

 between the type and my subspecies that may be characterized as 

 follows: Head often bulky and with the occipital portion dull, 

 densely but finely sculptured, dark coppery or lighter cuprescent, 

 with or without greenish blue reflections here and there and 

 with the lateral margin of the vertex broadly greenish or bluish. 

 Pronotum more or less convex, sometimes slightly globose, 

 densely but finely sculptured, semiopaque or brilliantly dark 

 coppery, with a narrow, greenish stripe near the lateral margins; 

 transverse sulci coppery or greenish, occasionally with the whole 

 surface, except the central disk, more or less bluish or greenish 

 and with the four borders broadly greenish. Elytra with a 

 short greenish stripe extending from the humeral angle halfway 

 to the median spot entad of the dark purple- violet margin, which 

 may be lacking. Sculpture of the distal half more or less 

 confluent but never deeply crenulated. Spots yellowish or whit- 

 ish; middle one sometimes longer or narrower, directed obliquely 

 caudad; anteapical spot frequently slightly prolongated in the 

 direction of the sutural spine. 



Subspecies coerulea Horn differs from the typical subspecies 

 heteromallicollis by being narrower and more elongated, the 

 middle portion of the pronotum being long, parallel sided, plane 

 dorsad, with fine, dense, transverse striations. Segments 2 to 

 4 of the antennae almost entirely, tibise often, yellow ; sculpture 

 of elytra denser, deeper, and more confluent. Middle spot of 

 elytra smaller than anteapical one. Dorsal surface more or less 

 blue. 

 Prothyma banksi sp. nov. 



Species quasdam generis Odontochilae simulans. Fronte in- 

 teroculos evidenter excavata ibique impressione discoidali in 

 forma "vestigii equi" (postice conclusi) ornata. Elytris im- 

 pressionibus 5 indistinctis ornatis: l a pone humeros oblique 

 suturam versus directa, 2 a longitudinali sat longa in disco laterali 

 juxta maculam median, 3 a parva juxta maculam ante-apicalem, 

 4 • parva sed prof undiore in angulo suturali, 5 a longa indistincta 

 levissima juxta suturam posita ; dimidia parte postica elytforum 

 longe et dense (praesertim trans versaliter) plicata: rugis valde 

 distinctis. 



