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CN487 4) 
XXII. Studies of the Blattide (continued). By R. 
SHELFORD, M.A., F.LS. 
[Read November 21st, 1906.] 
PLATE XXX. 
V. THE TYPES OF BLATTIDZ DESCRIBED BY FRANCIS 
WALKER, AND NOW IN THE Hope MUSEUM, 
OXFORD. 
THESE types are all contained in the collection of Mr. 
W. W. Saunders which was presented in 1873 to the 
Oxford Museum by Mrs. F. W. Hope; the new species in 
this collection were described by Walker in his “‘Catalogue 
of Blattariz ” (1868); and in a supplementary volume, 
“Catalogue of Dermaptera Saltatoria and Blattariz,” 
published in 1869. 
Owing to the inadequacy of Walker’s descriptions and 
to his elastic views of generic limitations many of his 
species can only be recognized by those who have access 
to his types. A careful revision of Walker’s work on 
Blattide is urgently needed, and the notes here presented 
are a first contribution towards a complete revision ; 
thanks to Mr. Kirby’s “Synonymic Catalogue of Ortho- 
ptera,” vol. 1 (1904), the task has not proved so difficult as 
might have been expected. The species are discussed 
here not in the order in which they were arranged by 
Walker, but in the order that they take in modern and re- 
ceived systems of classification of the Blattide. Wherever 
it hasappeared necessary the species have been re-described, 
but in some cases Walker's descriptions are quite recogniz- 
able, once the generic positions of his species have been 
fixed, 
TRANS. ENT. SOC. LOND. 1906.—PART IV. (JAN. 1907) 
