THE GKAIN BUG. 



9 



Ventrally: Uniform pale green, with black punctations. " Shelf " orange 

 on both thorax and abdomen. Rostrum green with brown tip and extending 

 one-half the length of venter. Legs: Coxje, trochanters, and femora pale 

 green ; tibise and tarsi light brown. 

 . Described from 11 specimens. 



riFTH INSTAE. 



Length 8.9 to 10.6 mm. ; width of thorax 4.3 to 4.8 mm. ; width of abdomen 

 5.3 to 7 mm. 



Dorsally: Head pale green, finely punctate; eyes brown, surrounded by pale 

 green area ; antennae 4.5 to 5.2 mm. in length, black or brown, peduncle light 

 green, articulation of segments 

 pale green. Thorax green with 

 black punctations ; wing pads 

 black or nearly so ; " shelf " 

 white to orange. Abdomen pale 

 green with black punctations 

 and bearing approximately the 

 same marking as preceding 

 instar ; " shelf " white with 

 more pronounced orange edge 

 than on thorax, not so promi- 

 nent as in preceding instars. 



Ventrally: Same as the pre- 

 ceding instar. Rostrum extend- 

 ing to posterior coxae. Legs : 

 Tarsi and outer fourth of tibise 

 black, remaining portions of legs 



pale green, tarsi and tibise bear- ^ ^^^^^^B^^^l^^ M 10^ 



ing numerous black spines. 



Described from 15 speci- 

 mens. 



-The grain bug : Nymph, fifth instar. 

 Much enlarged. 

 THE ADULT. 



The following is tlie description by Stal (1). 



5. L[ioderina] (CWorochroa) Sayi Stal. — Ovalis, dilute viridis, subtus pal- 

 lidior, supeme pectoreque sat dense distincteque punctata, ventre subtilius 

 punctato ; antennis nigris, articulo basali virescente ; limbo lateral! antico 

 thoracis, limbo costali thoracis, apice scutelli, margine abdominis, coxis, tro- 

 chanteribus f emoribusque basin versus pallide sordide flavescentibus ; callis 

 rugulisque parvis sparsis, in thorace scutelloque obsoletis, in corio distinctior- 

 bus, nee non maculis tribus laevigatis subcallosis basalibus scutelli viridi- 

 albicantibus ; membrana alisque decoloribus ; marginibus imis lateralibus 

 anticis thoracis et margine imo abdominis lutescentibus ; tarsis apicem versus 

 fuscis. ? . Long. 11, Lat. 6 1/3 mill. 



Patria: California. (Mus. Holm.). 



Praecedenti affinis, notls allatis formaque angustiore divergens: 



A redescription of the adult, by Mr. E. H. Gibson, of the Bureau 

 of Entomology, is given below. 



Dist'ance between eyes equaling almost two-thirds length of head. Head 

 closely punctate above. Tylus and juga of the same length. Anterior margin 

 103881°— 19 2 



