354 



KEY TO SPECIES. 



1. Pteromorphae rounded anteriorly and extending almost 



to the tip of the rostrum 2. 



Pteromorphae truncate in front and not extending beyond 

 the anterior margin of the abdomen 4. 



2. Pteromorphae smooth: an tero- ventral margin deeply emar- 



ginate emarginata. 



Pteromorphse somewhat wrinkled; antero-ventral margin 

 irregularly rounded 3. 



3. Abdomen unicolor; with four large, snbequal bristles situated 



on the posterior margin robusta. 



Abdomen with eight dark spot- on the dorsum; no bristles 

 on the posterior margin octopunctata. 



4. With a translamella 5. 



Without a translamella* 10. 



5. Pseudostigmatic organ short, subcapitate 6. 



Pseudostigmatic organ long, clavate or lanceolate 9. 



(5. Translamella short, very broad, being as broad as long. 



*spinogenuala. 



Translamella very narrow, almost reduced to chitinous 

 ridges 7. 



7. Translamella curved gradually backward from the ends to 



the center unimaculata. 



Translamella doubly curved, giving rise to a small median 

 cusp 8. 



8. Lamellar hairs one and a half times as long as the la- 



mella? turgida. 



Lamellar hairs scarcely as long as the lamellae minuscula. 



9. Femora of legs 11 with lateral blade-like expansions, fuscipes. 

 Femora of legs IT without lateral blade-like expan- 

 sions aHilamellata. 



10. Abdomen oblong, beingmuch longer than broad 11. 



A I tdomen globose 13. 



11. Pseudostigmatic organs slender, lanceolate, and clavate. 12. 

 Pseudostigmatic organs short, subcapitate arborea. 



