Peking man was discovered by W.C. Pei while Java man was discovered by Eugene Dubois.

Explanation

**Step-by-Step Solution:**

1. **Identify the Scientists and Their Discoveries**:
- The question mentions two scientists: W.C. Pei and Eugene Dubois.
- W.C. Pei is associated with the discovery of Peking Man, while Eugene Dubois is associated with Java Man.

2. **Research the Discovery of Peking Man**:
- Peking Man, a significant fossil find, was actually discovered by Johan Gunnar Andersson in 1921, not W.C. Pei.
...