PHILIPPINE SPECIES OF THE GENUS PROTHYMA AND 

 OTHER CICINDELINJE 



By Walther Horn 

 Of Berlin-Dahlem, Germany 



It has not been possible until recently to obtain a correct idea 

 of the specific values of the various species of Protkyma from 

 the Philippine Islands, owing to the fact that the material 

 collected was far too scant. Localities given by Cuming, Semper, 

 and others have but little value. Collecting by Whitehead, 

 Everett, Doherty, Banks, Baker, and Schultze has resulted in 

 obtaining material with exact localities and, consequently, the 

 specific features have begun to clear up. 



At various times I have received material from European 

 dealers in insects. Such material is usually not very valuable, 

 as one can place little confidence in the localities mentioned by 

 them. 



The result of the study of these collections is that we note a 

 most extraordinary degree of variability within the several spe- 

 cies. This makes them still more difficult to study, as the 

 number of characters used for diagnosis has always been very 

 small. Herewith I give a resume of these characters and the 

 variations that may occur. 

 Prothyma hopkinsi Horn. 



Labrum with the brownish sagittal stripe sometimes well 

 developed, sometimes lacking. The portion bearing the three 

 middle teeth sometimes long and narrow, sometimes short and 

 broad ; sagittal tooth of variable length, first segment of antennae 

 entirely yellow or almost entirely dark metallic, but its dorsal 

 surface frequently dark, its ventral surface distad usually yellow. 

 The frons and vertex are usually metallic coppery, with the 

 antennae, ocular region, portions of the orbit, and disk of vertex 

 frequently greenish. The pronotum may be longer or shorter, 

 its middle portion usually cylindrical or converging caudad. 

 Dorsal surface moderately or strongly convex, but sometimes 

 quite plane (especially on the caudal half) ; its sculpture fine 



