376 TRANS. ST. LOUIS ACAD SCIENCE. 



Pentstemon argutus? 25, p. 426; 35, p, .:oS. 

 campanulatus, 97, p- 51. 

 gentianoides, 35, p. 209. 

 Ilartwegi, 35, p. 209. 

 Petunia. 53, p. 89; 69, p. 29S — Xylocopa, Bombus. sps. 

 Phaseolus multiflorus, ^\'illd. 25, p. 428; 98, p- 365 ; 28, p. 189; 87, p. 25S 



— Bombus terrestris. 

 Plumbago Capensi-, 94 p. t,\t, —Xylozopa Virginica. 

 Plumeiria. 30, p. 114. 

 Poljgala charriiEbuxus, L. 90, p. 167; 30, p. 114; 87, p. 146; 87, p. 427 — 



Bombus ma&trticatus. 

 Primula elatior, L. 82, p. 347; 25, p. 425; 87, p. 429; 68 « — Bombus ter- 

 rest> is. 

 latifolia, Lap. 87, p. 428 — Bombus sp. 

 veris, 26, p. 22, 



viscosa, Vill. 90, p. 369 — Boinbus mastrucatus. 

 Pulsatilla vulgaris, Mill. 88, p. 43 — Bombus terrestris robs the flower of 



its neclar without perforating. 

 Prunella. See Brunella. 



Rhinanthus Alectorolophus, 97, p. 290; 87, p. 426; 85, vol. xiii.13, p. 210 

 — worker of Bombus mastrucatus. 

 alpinus, Bmg. 90, p. 289; 87, pp. 126-27 — Bombus mastrucatus., B. 



pratorum, B. terrestris. 

 Christa-galli, L. 30, p. 114; 106, p. 324 — Bombns sp. 

 major, Ehr. 106, p. 314; 82, p. 295 — Bombus pratorum, B. terrestris. 

 Rhododendron azaloides. 25, p. 432 — Bombus sp. 



ferrugineum, L. 87, p. 428 — Bombus inastrucatus. 

 hirsutum, L. 87, p. \2S— Bombus ma-^trucatis. 

 nudiflorum, Torr. 93, p. 142 — Bombus sp. 

 Ribes aureum, Pursh. 16, p. 23S; 9. p. 126; 113, p. 69; 25, p. 432 — Vespa 

 maculata. 

 Cvnosbati, L. 114, p. 136; 113, p. 69 — Vespa maculata^ Formica fusca. 

 Robinia Pseudacacia, L. 16, p. 238 — Bombus sp. 



Salvia coccinea. 25, p. 425; 30, p. 114. 



eriocalyx, Bert. 22, p. 2-i — Apis mellifica, Xvlocopa violacea. 

 glutinosa, L. 90, p. 317; 8:, p. 324; 25, p. 427 — Bombus terrestris, 



Bombus sf'. 

 Grahami. 25, p. 42;; 30, p. ii-|. See <?. mentiuvfolia. 

 menthsefolia, 'I'en. 22, p. 24 — Apis, Xylocopa violacea. 

 Mexicana, L. 22, p. 24 — Apis, Xylocopa violacea. 

 officinalis, L. 96, p. 267; 106, p. 94 — Bombus terrestris. 

 pratensis, L. 90, p. 317; 87, p. 428 — Apis uses perforations made bj 



Bombwi terrestris. 

 splendens, 113, p. 68; 73, pp. 318, 334. 



