30 Mr. W. L. Distant on 



the Scutelleringe and Graphosominae are concerned. All 

 Walker's species which relate to these two subfamilies are 

 reviewed in the following pages. I have also had all West- 

 wood's types which he described in the ' Hope Catalogue ' 

 before me as I worked through the species. Some new 

 species and genera are described. 



Walker's type-specimens missing from the collection call 

 for some remark. These disappearances, however, are not 

 confined to the Rhynchota. Dr. Butler appears to have found 

 similar lacunas in the Zygsenidse. Writing on this subject 

 (Journ. Linn. Soc, Zool. vol, xii. p. 402, 1876) he remarks: — 

 '* Mr. Walker comes one day and describes a new species ; 

 but, owing to the lateness of the hour, or some other cause, 

 omits to label it as a type ; the next time he comes to the 

 collection he continues his MS., and, finding this species 

 without a label, forthwith redescribes it. This will, I think, 

 account for several instances wliich I have noticed of 

 evidently the same species described twice over in consecutive 

 pages of Walker's Catalogues." Again {loc. cit. p. 432) : — 

 " He neglected to label his type, it got mixed up with the 

 other Arctiidse in the collection ; and the label appeared in the 

 cabinet with no specimen to represent Walker's species." 

 One other reason may be predicated. He never labelled the 

 specimens; he was an industrious though, it must be added, 

 reckless describer, and it seems probable that when he some- 

 times discovered his mistakes he shifted the specimens to 

 more proper positions and maintained a discreet silence as to 

 the process. Hence the specimens are doubtless in the 

 collection, but in other places and under other names. 



8c VTELLEBINJE. 

 Genus COLEOTICHUS. 

 Coleotichus excellens, Walk. Cat. Het. i. p. 3 (1867). 



The three specimens on which Walker founded his species 

 were unlocalized, and " patria ignota" appears against the 

 name in the catalogue of Lethierry and Severin. The 

 British Museum now possesses a specimen from Queensland, 

 and my own collection contains one from Samoa. 



A character generally present, and found in two of the 

 three typical specimens of Walker, is a small but distinct 

 levigate ochraceous spot near each basal angle of the scu- 

 tellum, which also possesses three or four small black spots — 

 two transversely placed and wide apart before middle, and 



