( 290 ) 



There seem only to be f&nale specimens before me, and it is probable that the 

 'liiale is devoid of the elytral apical costa. S. inipressa agrees in coloration with 

 S. coUaris Jac, but in that species the head is entirely black, the thorax is finely 

 rugose, and the general size of the insect is larger. 



Sutrea biplagiata sp. nov. 



Fulvous, the terminal joints of the antennae, the breast, abdomen, and the 

 posterior femora black, I hoiax impunctate, elytra black, scarcely perceptiljly punctured, 

 a trigonate transverse band before the middle, narrowed at the suture, fulvous. 



Length 2 lines. 



Head impunctate, t lie frontal tubercles rather obsolete, antennae filiform, fulvous, 

 the last two joints black, third and fourth joints ecpial, elongate; thorax twice as 

 broad as long, parallel, the sides rounded, the surface impunctate; .scutelluni fulvous; 

 elytra slightly widened at the middle, nearly impunctate, black, each elytron with a 

 transverse rather broad fulvous band commencing at the sides and extending nearly to 

 the suture, where it is much narrowed; the lower margin of this band is straight, 

 the upper one obliquely shaped ; the anterior legs and the posterior tibiae are flavous, 

 the posterior femora black ; the first joint of the posterior tarsi is as long as the 

 following joints together. 



Hab. Batchian. 



Distinguished by the nearly impunctate upper surface, the shajje of tlie elytra- 

 band, and the black underside. 



Sutrea collaris Jac. 

 Two specimens obtained in Humboldt Bay differ from the type in having two 

 separate elytral white spots instead of a band at the middle, the antennae are also 

 entirely fulvous, and tlie thoracic spot is of more rounded shape, the underside and 

 legs are partly obscure fulvous instead of black. Both specimens seem to he femaks. 

 They may be local varieties of S. collaris, or possibly another closely allied species. 



Sutrea dimidiatipennis .lac 

 Specimens from Andai and Humboldt Bay, in which the amount of fulvous at 

 the basal portion of the elytra varies greatly ; the variety with entirely black elytra 

 was also obtained at Humboldt Bay. 



Microsutrea gen. nov. 



Body ovate, palpi rather robust, antennae very long and slender, the third joint 

 elongate as well as tlie following ones, thorax without depressions, transverse, parallel, 

 the anterior angles oblique, elytra finely jmnctate-striate, their epipleurae broad, 

 continued to the apex, po.sterior femora strongly incrassate, their tibiae widened, 

 longitudinally but not deeply channelled, the apex armed with a small spur ; the 

 first joint of the isosterior tarsi longer than the following joints together; claws 

 ajiiieiidicnlate ; prosternum proportionately broad, the anterior coxal cavities clo.sed ; 

 the tirst abdominal segment more than twice as long as the following one. 



The insect for which I propose the present genus resembles, in its general shape 

 and that of the thorax, the genus SiUrea, from which it is distinguished by the closed 

 anterior coxal cavities ; from Cerotrus Jac, the long third joint of the antennae and 

 the armed posterior tibiae will separate it, while Araipoda differs in the shape of the 

 thorax and its perpendicular grooves. 



