18 BULLETIN OF THE 



about as long as the pronotum. Hind femora unarmed above, rather slender, 

 reaching the extremity of the abdomen ; hind tibia; with smooth margins 

 between the spines, the inner and outer series of which are of nearly equal 

 lengtli, the outer series consisting of nine spines, the last before the ai)ex; 

 second joint of tarsi not half so long as the first. Last dorsal segment of male 

 abdomen deeply and broadly concave, unarmed, centrally emarginate. 



Halmenus robustus, sp. nov. 



Plate I. Figs. 6, 7. 



Pezutetlix VIC. sp. Brun.!, Proc. U. S. Nat. Mas., XII. 193. 



Head and dorsum of pronotum testaceous, the frontal costa sometimes dotted 

 above with fuscous, as is also tlie vertex next the eyes; antenna? concolorous, 

 sometimes infuscated on the apical half ; lateral lobes of prozona blackish 

 fuscous (extending upon the head as a quadrate spot behind the eye) with a 

 bright white broad broken and bent stripe below, tlie lower margin of irregu- 

 larly mingled black and white ; the white band extends also across the 

 metazona, but above it the lobes are testaceous, longitudinally streaked with 

 black. Prozona coarsely and very faintly rugose ; metazona heavily punctate. 

 Tegmina strongly infuscated except on dorsal field. Outer face of Innd femora 

 with extreme bai5al, premedian, and faint postmedian oblique blackish fuscous 

 stripes, the geniculations infuscated ; tibiiie uniformly testaceous, the spines 

 black-tipped. Abdomen heavily marked with black, especially on the sides. 



Length of body, male 30 mm., female 32 mm.; pronotum, nude 7.5 mm., 

 female 8.5 mm.; hind femora, male 15.5 mm., female 18.5 mm. ; tegmina, 

 male 9.5 mm., female 11 mm. 



Conway Bay, Indefatigable Island, August 6, 1 male, 1 female, G. Baur; 

 Indefatigable Island, 1 male, U. S. Fish Commission, 1888; James Island, 

 1 male, immature, U. S. Fish Commission, 1888. 



DESMOPLEURA (Setr^oy, nKevpti), gen. nov. 



Body parallel-sided. Head prominent, the summit horizontal, scarcely con- 

 vex, the fastigium of vertex slender, elongate, declivent, sulcate, apically 

 broadened; front pretty strongly declivent, the costa subequal throughout and 

 sulcate, scarcely contracted below the ocellus and oidy a little narrower above, 

 where it equals the width between the eyes ; lateral carina; of face prominent; 

 eyes elongate, rather prominent, longer than the gense beneath them ; last joint 

 of maxillary ])alpi apically truncate, similar to the preceding ; antennae linear, 

 longer than head and pronotum combined. Pronotum compressed, subecpuil, 

 very obtusely angalate behind, subtruncate in front, the sulci feebly impressed 

 but distinct, the dorsum feebly convex with no lateral carina; ; lower side of 

 the lateral lobes mesially broadly ungulate; prosternal spine conical, appressed 

 to the mesosternum; mesosternal lobes distant; metasternal lobes subcontiguous 



