90 GEO. H. HORN, M. D. 



EXPLANATION OF PLATE I. 



Fig.. 1. — Euthysanius lautus % Lee. 



Fig. 2. — A variety of same. 



Fig. 3.— Female of 1. 



Fig. 4. — E. pretiosus % Lee. 



Fig. 5. — Same 9; «, antennal variation. 



Fig. 6. — Aplastus optatus % Lee. 



Fig. 7. — Same 9> {Anamesus convexicollis Lee.). 



Tig. 8.— Aplastus speratus 9 Lee.; a, maxillary palpus, probably a monstrosity. 



Fig. 9. — A. angusticolHs % Horn. 



EXPLANATION OF PLATE II. 



1. — Plastocerus Schaumii % . 



2. — P. f rater 9 Lee., a variety of Schaumii. 



3. — P. macer % Horn, a variety of Schaumii. 



4. — Outline of thorax showing further variation as well as a monstrosity of 



the antenna. 

 5. — Another form of thorax. 

 6. — Aphricus californicus % Lee. 

 7. — Cebrio bicolor % Fab. 

 8. — Scaptolenus ocreatus Horn. 

 9. — Zenoa picea Beauv. 

 ig. 10. — Sandalus californicus 9 Lee. 

 ig. 11.— Same % . 

 ig. 12. — S. petrophyus 9 Knoch. 

 ig. 13. — Same % . 



'i'i.—Acneus quadrimaculatus % Horn; a, antenna more enlarged; 6, anterior 



elaw ; c, posterior claw. 

 15. — Brachypsectra fnlva Leo. ( 9 '?)■ 



