Step 1: Understanding the Concept
Globular proteins fold into a spherical shape and dissolve in water. Fibrous proteins form long threads and are insoluble.
Step 2: Classify the Options
Egg albumin, insulin and legumelin are globular proteins.
Step 3: Conclusion
Myosin, the muscle protein, is a fibrous protein, along with keratin and collagen.
Final Answer:
Myosin is not a globular protein.
\[ \boxed{\text{(C) }\text{Myosin}} \]