452 THE CANADIAN ENTOMOLOGIST'. 



TWO NEW GENERA OF ORIENTAL HEMIPTERA. 



BY G. W. KIRKALDY, HONOLULU, HAWAIIAN ISLANDS. 



Tessaromerus, gen. nov. 

 This genus belongs to the Urolabididse, and differs from all the 

 described genera by having only four segments to the antennae, the fourth 

 being longer than the third, which is subequal to the second and longer 

 than the first. The labium extends about as far as the base of the middle 

 ambulacra. Lateral margins of pronotum sinuate and a little reflexed. 

 Some of the veins of the membrane are incompletely furcate. Otherwise 

 it is very much like Urochela. 



(i) guadriariiailatus, sp. nov. — Brownish-yellow, punctured with 

 blackish, a small la^vigate pale yellowish spot on each side of the middle 

 of the pronotum. Antennse blackish. 



Length, 93^ mill. 



Hab.: China, Yunnan (Montandon, in my collection). 



Rheumatotrechus, gen. nov. 



This genus has somewhat the appearance of Ptilomera of the Gerridae, 

 but the legs are much shorter, especially the fore tarsi. 



Head as in Ptilomera^ but the eyes are less oblique, and much less 

 emarginate, the vertex being elongate, and subparallel as far as the 

 articulation of the antenme. The first segment of the antenna? is little 

 longer than tlie second. The labium is much as in rtilomera. In the 

 apterous form the pronotum is well rounded at the sides, extending 

 laterally much farther than the eyes. The nota and tergites are much as 

 in Ptilomera, but the whole insect is much shorter and broader in propor- 

 tion, the abdominal sclerites much less elongate, the mesonotum also more 

 rounded laterally. The fore femora are a little incrassate, and are scarcely 

 longer than the tibice ; fore tarsi very short. Middle and hind legs much 

 shorter than in Ptilomera. 



(i) Himalayamis., sp. nov. — Pale castaneous or fulvous ; head with 

 an elongate oval mark on vertex (the interior castaneous) and some lateral 

 marks, dark fuscous. Apex of first segment and apical fourth of second 

 dark fuscous. Eyes dark. Last segment of labium black. Pronotum 

 dark castaneous ; a central line and a lateral sinuous one on each side, 

 yellow, the central one narrowly and rather obscurely margined with black, 

 this spreading out a little apicaily. The mesonotum has a small, subtri- 

 angular, fuscous mark on each side subanteriorly. Legs yellowish-fulvous; 



December, 1908 



