27*^ [December, 



shining sides are closely punctate except on the pallid yellow part. The femora are 

 broadly yellow at the base, and black at the tip. The abdomen is black and shining. 



Kilauea, Hawaii, July, 1895. Eight specimens. On a tree with 

 small inconspicuous blossoms turning into dense masses of yellow 

 berries very easily detached ; ? of the nettle family. 



The specimens are not sufficient in number to allow me to form 

 an opinion as to the amount of variation ; the sulphureous tint of the 

 setosity is in one individual replaced by a dull ochreous colour; in 

 another the extent of black colour is reduced. I have no doubt the 

 species is distinct. In the colour of the legs it agrees with var. a of 

 P. Blackhurni, but that insect has the antennae red and more strongly 

 setose. 



Plagithmysus speculifer, n. sp. 



Flavo-rufus, rapite thoraceque nigrieantibus, hoc albido quadri-vittato ; 

 elytris ex parte majore nigris, ham rufo, margine laterali flavo, densissime 

 puiictatis, plaga communi elongata, gracile, anterius leniter furcata, ochracea ; 

 pedibtts perelongatis rufis,femoribus ba si flavo. Long., 15 mm. 



This species is also represented by a single example : it is rather closely allied 

 to P. sulphurescens, but is readily distinguished by the remarkably large, highly 

 polished, impunctate space on the sides of the thorax, as well as by the denser 

 punctuation of the lateral portions of the elytra and the very gentle outward 

 curvation of the pubescent area : this yellow area is entirely surrounded by the 

 black colour, whereas in P. sulphurescens the fork of the pubescent area divides the 

 black colour completely. The meso- and metasterna are pale red ; the abdomen 

 black, more or less marked with yellow ; it extends, when the terminal segment is 

 withdrawn, to within about 2i or 3 mm. of the tip of the elytra. 



Head of Jao Valley, Maui, June, 1894. 



Plagithmtsl's jsstivtjs, n. sp. 



Riifus, abdomine femoribusque facie inferiore nigrieantibus ; thorace 

 albido bivittato ; elytris hasi setis albidis adsperso, sutura posterius lineis latis, 

 minus argutis, singulo anterius versus latus divergente, puhescentice alhidce. 



Long., 8 — 15 mm-. 



Thorax dark red ; with two broad, white stripes on the dorsum, the sides bare, 

 each with a large smooth space. Elytra densely punctured, witliout smooth space 

 at the sides ; the basal part flecked with white hairs, and there are also flecks of 

 white hair along the suture behind, forming a diverging fork in front. Legs with 

 the femora not greatly thickened, in the female indeed, almost slender ; either 

 red, or marked with black along their under surfaces. Tibiae and tarsi with com- 

 paratively litlle hair. 



Molokai. Mr. Perkins procured a pair of this species in copula on 

 the 3rd of August, 1893, and on revisiting the island in June, 1896, he 

 secured seven other specimens, only one of which is a female. Judging 



