634 FAMILY XXIV. — ANTHOCORID^E. 



609 (852%). Macrotracheliella nigra Parshley, 1917c, 38. 



Elongate-oblong, narrowed in front. Black, strongly polished; very 

 sparsely clothed above and beneath with fine, stiff erect hairs; membrane 

 dark fuscous, its margins adjoining cuneus and inner basal angle whitish; 

 tarsi dark brown. Antenna? with joints 1 and 2, apical half of 3 and 

 base of 4, black, finely pilose, basal half of 3 dull yellow, apical portion 

 of 4 piceous; joint 1 not quite reaching tip of tylus, 2 twice as long as 

 1, enlarged toward apex; 3 two-thirds the length of 2, 4 more slender, 

 strongly tapering, nearly as long as 2. Pronotum as above described, 

 basal lobe convex, declivent forward, its hind angles slightly knobbed. 

 Scutellum with basal half convex, very finely punctate, apical half fiat, 

 finely transversely rugose. Membrane surpassing abdomen. Length, 

 2.3—2.5 mm. 



Sherborn, Mass., September 6 — 20 (Frost) ; taken by sifting 

 dead leaves and other vegetable debris. Known only from 

 Massachusetts and Rhode Island. 



II. Anthocoris Fallen, 1814, 9. 



Elongate-oblong, usually finely pubescent shining species, 

 rather large for the family and having the head longer than the 

 width across eyes; beak reaching or slightly surpassing front 

 coxae, its first joint not reaching front of eyes ; pronotum trape- 

 zoidal, its base widely and shallowly concave, the disk with an 

 ill defined median transverse groove ; elytra with sides parallel 

 to apical third, the suture of the cuneus distinct; apex of ab- 

 domen with long exserted hairs ; hind coxae 

 narrowly separated. About 20 species 

 have been described, two from our terri- 

 tory, but these are herewith treated as 

 synonyms, as there are few if any distin- 

 guishing characters in the original descrip- 

 tions. 



610 (861). Anthocoris musculus (Say), 1832, 

 32; I, 357. 



Elongate-oblong. Black or piceous-black, 

 shining; elytra piceous-brown, the outer half of 

 (After clavus and basal half of corium grayish-white; 

 x ra ^ e 'sI t 'roii l . >U For' N )° 16 ' membrane whitish-hyaline, the apical half dusky; 

 beak dark reddish-brown, legs paler. Joints 1 and 

 4 of antenna? fuscous-black; 2 and 3 reddish-brown at base; 1 reaching 

 tip of tylus, 2 almost as long as head, 3 one-half the length of 2, two- 

 thirds shorter than 4. Pronotum with sides behind the front angles mar- 

 gined and slightly flattened; disk nearly everywhere very finely trans- 

 versely rugose. Apical portion of scutellum similarly rugose. Elytra, 



