COLEOPTERA 265 



(19) TJiriscotJiorax pcrkinsi, sp. nov. 



Fuscus, supra vix subaeneus, abdomine et pectore nigricantibus, antennarum 

 basi palpis pedibusque fusco-testaceis, femoribus extrorsum flavis ; elytris profunde 

 abnormaliter sculpturatis, profundissime striatis, interstitiis subsymmetrice fractis. Long. 

 4^ mm. 



Plate VII. fig. 13. 



Antennae dark, with the basal joint yellow, and the following two more or less 

 yellow. Thorax strongly transverse, sides greatly rounded, much narrowed behind, 

 the base constricted, the hind angles rectangular, the disc shining, slightly wrinkled 

 transversely, the median channel and anterior impression very deep, the base punctate, 

 deeply impressed on each side. Elytra with very peculiar sculpture, the striae or 

 grooves very deep, the sutural two interstices angular, those more external broken 

 here and there, and where broken rendered irregular, so that some of the fragments 

 connect with their lateral neighbours ; near the base on each side a peculiar Ioojd is 

 thus formed. 



I have much pleasure in naming this remarkable little insect after its discoverer. 

 It is, I suppose, next to impossible to attempt any explanation of these remarkable 

 freaks of sculpture. This sculjDture varies a little. We have a small series of eight 

 individuals. 



Hab. Molokai, 5000 ft., in the autumn of 1893 (Perkins). 



(20) Thriscothorax variipes, sp. nov. 



Niger, politus, antennis, palpis pedibusque testaceis, femorum basi tibiarumque 

 medio fuscis ; prothorace basin versus angustato, lateribus haud sinuatis, angulis 

 posterioribus obtusis ; elytris seriebus quatuor punctorum valde abbreviatis, stria 

 suturali ad apicem profunde exarata. Long. 6 mm. 



A large Tlwiscothorax with highly polished surface, and very obtuse hind angles 

 to the thorax. Antennae not elongate. Head usually piceous. Thorax very polished, 

 much narrowed behind, but without any sinuation at the sides, the hind angles obtuse, 

 not rounded, the base narrow ; the anterior impression deep and definite, not sculptured, 

 the median channel distinct, the base punctate. Elytra polished, with four series of 

 punctures that commence some little distance behind the base, the sutural one is 

 continued as a stria to the apex where it is deep, the second can be just detected near 

 the apex, but the others cannot be detected there. Legs with yellow coxae, the femora 

 broadly black at the base, and the tibiae blackish in the middle. Six specimens. 



Hab. Hawaii. Kilauea, August 1S96 (Perkins). 



34—2 



