Ümit,
Unfortunately, the terminology is somewhat arbitrary. For example, what
we've been calling the verge is also known as the penile papilla;
likewise, bursa copulatrix is another name for the spermatheca. As you
know, Schileyko has come up with the term "prismaconic tubercles" for the
plain old papillae inside the penis.

If there is a protuberance where the flagellum is supposed to be, then I
would call it the flagellum. I am not sure how one can otherwise
distinghish a flagellum from a caecum both being blind sacs.

Why are you calling them "external" anyway? I don't think the epiphallus &
the penile appendix ever leave the body.

Aydin


On Mon, 11 Dec 2006 17:57:32 +0200, umit <[log in to unmask]> wrote:

>I know that this has no relation between the coming threads so far or
could
>get a lesser portion of interest. But..here is my problem and questions
>directed to whom it may concern:
>
>There are several structures on male genital system, either internal or
>external. External structures can be listed as penis, penial gland
>(+accessory gland), penial appendix (corresponds to term penial process?),
>flagellum, caecum, epiphallus; internally verge, stimulator,
>spermatophore.....Sometimes i can see that additional names can also be
>applied.
>
>Couple of  minutes ago i was looking at the genital system of Pachnodidae
>(syn. Cerastidae), some showing a difference in having 2 penial caecum, a
>'doubled' rather primitive character acc. to literature. Generally the
>second caecum sits on where flagellum is, and for the family it is said
>'flagellum absent'.
>
>Q1: What does caecum and flagellum, external protuberances in general,
>stands for? Is there a general acception about their "work" and anatomical
>differences?
>
>Q2: I wonder if anyone studied the possible homological relations between
>all above mentioned organs, in between or wtihin groups?
>
>ܭit KEBAPlj
>S?n Demirel ܮiversitesi
>Fen-Edebiyat Fak?, Biyoloji B???PARTA
>

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