[26]

O. conopsea June 4. 62.

The two viscid glands are broad compared with size of orifice of nectary & form together an arch: if a moth or when fine bristle inserted exactly in middle they become both attached rather laterally, & after depression strike, as I know by trial th lateral stigma. But there are no guides of any sort to Labellum, which is rather broad & nearly flat, hence moth might (& apparently do thus visit flower) insert proboscis a little on one side, & in this case, I find by repeated trial, only one pollinia becomes

[26v]

attached laterally to bristle & after depression it will strike the one lateral stigma on same side. The whole contrivance consists in the two discs forming a rather arched roof, so as to become attached rather laterally to bristle or proboscis