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XVI]

Additional species have lately been described—P. rostrans (S. America) distinguished by the large size of its head, P. marginatus zeylanicus (Ceylon), P. antennatus (Gold Coast), P. squamipleuris (Khartoum), P. dubosqii (Africa), P. squamiventris and longipalpis (Brazil). It must be distinctly understood that this list is by no means final.