340 Field Museum of Natural History — Zoology, Vol. VII. 



differing from earlier names only in some minor detail — as termina- 

 tion indicating gender, etc. , — cannot be considered as being homon- 

 ymous. It seems almost certain that the adoption of this rule will 

 sooner or later become universal, — the more surely as it makes for 

 stability of nomenclature. Mr. Sigmund Schenkling, while citing 

 Spinola's term, places the species in Macrotelus Klug, but this name 

 is antedated by Monophylla Spin., to which the species may properly 

 be referred. The species may be separated by aid of the following 

 key : 



KEY TO THE SPECIES OF MONOPHYLLA. 



a. Elytra more or less striate. 



b. Size small (4 mm.) ; elytra distinctly punctate striate near 

 suture only; head black. sub striata, 340 



bb. Larger (8 mm.); elytra entirely punctate striate; head yellow. 



cinctipennis, 341 

 aa. Elytra uniformly punctate, not at all striate. 



c. Prothorax rather elongate; elytra finely, rather sparsely 

 punctate; legs bicolored. californica, ^41 



cc. Prothorax broader; el}i;ra more coarsely and densely punctate; 

 legs black. terminata, 342 



Monophylla substriata sp. nov. 



Form of californica but less elongate. Clothed with moder- 

 ately dense, semi-erect, whitish pubescence. Head black; front 

 before the eyes pale brownish, very coarsely, densely punctate; an- 

 tennae(d*) eight-jointed, pale brownish, intermediate joints darker. 

 Thorax one-fourth longer than wide; disk and flanks black, apical 

 and basal margins very narrowly, obscurely testaceous; surface 

 very finely, densely punctate. Elytra pale brownish; a broad pale 

 fascia at middle, the anterior margin of which is vaguely limited, 

 the posterior margin bordered with fuscous; a rather large infuscate 

 spot on each side near scutellum. Meso- and metastemum black. 

 Abdomen pale brownish testaceous; anterior margin of ventral seg- 

 ments two, three, and four obscurely fuscous. Legs pale brownish ; 

 anterior and middle femora somewhat infuscate; hind femora with 

 a large piceous spot near apex; tarsi slightly infuscate. Length 

 4 millim. 



Differs from cinctipennis in coloration, size, and sculpture of 

 elytra as indicated in the above table. Cinctipennis has the antennae 

 eleven-jointed (probably ten-jointed in the male), while the male of 



