50 AMERICAN IIEMIPTERA IIETEROPTERA — MONTANDON. 



I have rcccivt'd this species from Coiistaiitiiie, ]\lieli. ; Ikirliugtoii, 

 Iowa; Massachusetts; (Colorado; and Dakota. 



Of the same dimeusions and color as the European species, ^l. ralea- 

 r<(ti(,s Lin., Avitli which at first sii;]it it is very easily confounded. It 

 differs in the more sparse hairs, which are almost wantiug' ou the disk 

 of the prouotuui ; in the small, dark, rounded spots on the posterior i)art 

 of the ])ronotum and the elytra; and especially in the whitish diajdia- 

 uous membrane, with the nervures darkish and tlie numerous, small, 

 rounded spots scattered on the surface. It is closely allied to the 

 following species: 

 Alydus ciiriniin Say^^alcr Dallas. 



This species is larger than A. conspcrsus (12 to 13'"""), darker in every 

 way, being most frecinenfly entirely black, with very small, pale, almost 

 impercei)tible spots at tlie base of the segments of the coniu'xivum; 

 the hair of the hend and surface of the pronotum very dense and l)lack. 

 Some pale varieties have the elytra, grayish, but the membrane is en- 

 tirely infuscated and the back of the abdomen is darker than in A. 

 conspersns Montand., sometimes entirely black. 



It is as abundant as the preceding species, and my collection con- 

 tains numerous examples from Iowa, Connecticut, Massachusetts, and 

 Florida. 



Prof.Uhler has correctly j)laced it in his Check Listof tliellemiptera- 

 Heteroptera of North America, 1880. Of this si)ecics Say gives the 

 following diagnosis: "Body blackish, hairy, punctured; thorax densely 

 punctured, midic''^ (Description of New Ilemipterous Insects collected 

 in tlie Expedition to the Kocky ^lountains, 1824). It can not be con- 

 founded, as was done by Stnl (Enumerat. IIemii)ter., Part i, 1870, p. 

 213), with A. 2)ilosuluSj II. S., which is not of the same form, having 

 the lateral angles of the pronotum prominently acute, as well repre- 

 sented in II. Schaefter's figure 870, which gives a clear idea of this last 

 species. Conseqnently the synonymy should be corrected tlius: 

 Ahjdus pilosnlus H. S.^enrinus Stal ucc Say. 



The small, lateral, pale edge of the pioiiotum renders this species easily 

 recognizable and it is also very common. I possess specimens from 

 St. Louis, Mo.; Florida; and Massachusetts. From the lateral acumi- 

 nated angle of the [)ronotum this species could be placed in the sub- 

 genus Megalotonuis Fieb, but it has not the long antenna^, the first joint 

 not being longer than the second, nor the broa<l hoUow at the base of the 

 pronotum, as in the following species, which it approaches: 



AhidiiH (H. G. Meyalotomns Fieb.) ((uhiqncsjyhwitiis iiny=criiciitiiH II. S. 



This last species is widely distributed throughout North America, 

 and my collection contains si)ecimens from Canada, Massachusetts, 

 Wisconsin, New York, and Florida. 



