22,4 Horn: The Genus Prothyma and other Cicindelinas 359 



as bakeri, but with most of the frons, vertex, and pronotal disk 

 coppery. The disk of the elytron in this specimen shows a color 

 intermediate between the forms already described. The blue 

 of the bases of the elytra is very variable (sometimes the base 

 and the lateral areas in the anterior two-fifths are blue; occa- 

 sionally there is only a broad blue stripe surrounding the whitish 

 humeral macula (all maculae are whitish in bakeri) and extend- 

 ing caudad toward the disk, terminating before the median spot ; 

 sometimes the blue has the same distribution as in typical P. 

 hopkinsi. 



Luzon, Tayabas Province, Malinao. 

 Prothyma hopkinsi subsp. rotundato-cuprescens subsp. nov. 



Diff ert a forma prioritatis sagitalli labri parte inf uscata ; tota 

 corporis superficie laetius aureo-cuprascente ; elytris subniten- 

 tibus; capita pronotoque valde splendentibus ; pronoto sat con- 

 vexo; elytrorum maculis testaceis, paullo majoribus; media lata 

 obliqua, multo breviore; ante-apicali plus minusve rotundata; 

 primo antennarum articulo testaceo. 

 Long 11-12 mm. (sine labro). 



Insula Biliran (McGregor) a Dom W. Schultze mihi comuni- 

 cata ; $ in collectione mea, 2 in collectione W. Schultze. 



The dorsal surface is golden coppery; head and pronotum 

 very brilliant, elytra a little duller, with larger but shorter yellow 

 spots; pronotal sulci greenish blue in their depths. Lateral 

 border of pronotum narrowly greenish or bluish. Borders of 

 elytra dark copper violet, on the first fifth with a greenish or 

 bluish submarginal stripe. 

 Prothyma lucidicollis Chaud. 



The typical P. lucidicollis has a strongly globose pronotum, 

 very convex dorsad ; rather convex elytra, with moderately con- 

 fluent sculpture. Frontovertical area and pronotum golden cop- 

 pery, very brilliant, with fine sculpture intermittently obsolete. 

 Prothyma heteromallicollis Horn, described originally as a 

 species, is but a subspecies of P. lucidicollis, although the typical 

 form differs as follows : Middle portion of pronotum cylindrical, 

 plane dorsad; elytra less convex, with deep sculpture and with 

 strongly confluent punctures. Dorsal area of frons, vertex, 

 and pronotum dull and densely finely sculptured. 



Both of these typical forms are from unrecorded localities in 

 the Philippine Islands. 



