nvm. I figured it out.  It's a Process shape.

Hi James thanks for posting in the community! I'm glad you were able to find the shape you were looking for. For future questions you may find that another user has asked a similar question here in our community. For a description of functionality and how-to instructions for different features our Help Center articles are a great resource. Feel free to take a look at this Shape Libraries article for more information on the shapes available to you in Lucidchart. Finally you're welcome to contact our support team here with any additional questions you may have. Let me know if there's anything else I can help you with!