This is species already hatching into a beautiful model (Mathilda May). A smashing baby with an urge to kiss and kill!
The movie begins with a strong launch, and infected by a bore-virus throughout the middle to end.
The weakest spot is the presentation of the basic plot/story. As you should have compared it, Natasha Henstridge's Species got the same plot, but adds up much interesting side plot and not mentioning good actions and strong clymatic ending.
This explain why Patrick Stewart joins the fleet of enterprise in Star Trek Next Generation; he wanted to find more models in glass cage, floating inside Halley-Comet.
A must see for a science fiction fans.