After moving to Tring, Hopkins described five new species of fleas : Xenopsylla philoxera, Hopkins 1949; Plocopsylla ulysses, Hopkins 1951; Peromyscopsylla draco, Hopkins 1951; Cratynius crypticus, Hopkins and Traub 1955; and Demeillonia miriamae, Hopkins and De Meillon 1964.
12.
In September 1954, at Dugway Proving Ground in Utah, the E14 was again used in a series of tests known as " Operation Big Itch " . ( " Xenopsylla cheopis " ) were loaded into the E14 and air-dropped over the proving ground.
13.
Four of the five patients had severe pharyngitis and submandibular lymphadenitis . " Yersinia pestis " was isolated from the camel's bone marrow, from the jird ( " Meriones libycus " ) and from fleas ( " Xenopsylla cheopis " ) captured at the camel's corral.
14.
"' Paul-Louis Simond "'( 30 July 1858 & ndash; 3 March 1947 ) was a French physician, chief medical officer and biologist whose major contribution to science was his demonstration that the intermediates in the transmission of bubonic plague from rats to humans are the fleas " Xenopsylla cheopis " that dwell on infected rats.
