spear or pilum?

[Robert]

I may have made a mistake in terminology. :oops: The classification Lancea was used by me as a translation of "lanspunt" or lancepoint. These have the characteristics I described, 25 to 30 long, with a long, narrow (3 to 4 centimeter) point and slender shank measuring around 1.8 centimeters This would make them probable for throwing as well as stabbing, shaftlength somewhere like 1.75 meter, no buttspike, right?
The throwing spears have a much narrower shank, are much shorter in lenght (10 to 14 centimeters overall) and I have understood from other posts that these had a shaftlenght of around 135. Would this make them vellites? They could have had shafts of only 1.4 centimeters in diameter.