108 HENRY SKINNER, EDITOR. 



the more rounded apex of the scutellum, and the finer punctures 

 over the whole upper surface. The dotting of the elytra is quite 

 characteristic but perhaps should not be depended upon. Euschistus 

 conspersus described by Dr. Uhler in 1899, is surely very close to 

 this species, but he gives the second joint of the antennae in his 

 species as much shorter than the third, the apex of the scutellum 

 narrow, bordered with white, and the pleura with uncolored punc- 

 tures, none of which characters will fit this species at all ; the size 

 given for conspersus is also a little less and the form more slender. 

 This interesting addition to our North American fauna is apparently 

 confined to the Rocky Mountain region. 



Alydus scutellatus n. sp. — Small, greyish above, scutellum deep velvety 

 black, nervures of the membrane anastomosing. Length to tip of membrane 9 

 mm. Head proportionately a little broader before the antenna-, and the vertex 

 more convex, with the ocelli placed farther back than in eurinus and consper- 

 sus; bronze black, with a median longitudinal line above, a more slender abbre- 

 viated lateral line before and a little above the base of the antenna?, and a short 

 oblique line behind and beneath the eyes, soiled white or pinkish. Antennae 

 fuscous, a little paler on the basal half of the first three joints, these, joints sub- 

 equal in length ; apical joint black, little longer and stouter than in eurinus. 

 Rostrum reaching to the intermediate coxa?, minutely touched with pale at the 

 intermediate incisures. Pronotum bronze-black, coarsely punctured, marked on 

 the posterior lobe with four or six pale vitta?, more or less distinct; a median 

 longitudinal velvety black line from the collar almost to the base; posterior 

 margin very narrowly edged with pale around the humeral angles and before 

 the middle of the scutellum; surface almost flat posteriorly, a little depressed 

 within the humeral angles. Scutellum deep velvety black, with the tip of its 

 upturned apex pale. Elytra pale or tinged with pinkish, punctured and irregu- 

 larly varied with blackish. Membrane bronze-black, becoming paler exteriorly, 

 the nervures strong, irregular and somewhat reticulated and branched in places. 

 Beneath shining bronze-black, the propleura coarsely punctured, the calloused 

 edges of the coxal orifices, a median spot on the second, and the hind edge of the 

 sixth segment, yellowish or tinged with pink. Genital segment black, polished, 

 with a large median fulvous spot. Legs black, with the tips of the coxa 3 , knees 

 and basal half of the first tarsal joint, pale. Posterior femora more slender than 

 in any of our other species, with four large spines and a few minute ones beneath 

 marked near the apex with an obscure pale band. Disk of the tergum rufous 

 posteriorly. Connexivum with a small pale marginal spot near the base of each 

 segment. 



The claspers of the male are strap shaped and curved almost in a 

 semi-circle, approximating at their apex which is a little wider and 

 slightly refiexed at the upper angle. In conspersus the claspers are 

 narrowed toward their apex and approach at an angle making a 

 pear-shaped opening. In eurinus they are broader with a smaller 



