1 1 us! ralia n ( 'istel idae. 83 



//. tenebrioides, Blackb. — I have been much puzzled by the dis- 

 crepancy between the description of this insert and specimens so 

 labelled in Blackburn's handwriting, in his own coll. (kindly sent 

 me for examination by the authorities of the South Ans. Mus.). 

 These specimens correspond with a species 1 have from Cootamundra, 

 Forbes, Angledool (N.S.W.), Toowoomba, (Q.), and Eucla (S.A.). 

 They do not correspond with the description in colour " nigro- 

 coeruleo, prothorace laete cyaneo-micans, sutura obscure rufe- 

 scenti," being quite black. It is possible that the type was a 

 colour var., but the description reads very much like that of //. 

 curticornis, Haag., especially in the subgibbous prothorax and the 

 elytra " fortiter striatis." As tabulated above I have considered 

 the specimens labelled by Blackburn as correct. If this is wrong, the 

 species so placed in my table will require a name. 



//. luctuosus, Champ. — I believe I have correctly determined 

 this in a specimen taken by myself on Mt. Wellington, Hobart, and 

 two specimens in Mr. Lea's coll., from Gladestone, Tasmania. It is 

 much the largest species in the group in which I place it, and as 

 anomalous in other ways in facies somewhat like a Tanychilus (with- 

 out, however, the prolonged head), the elytra considerably widened 

 posteriorly. The wide, flat, almost smooth elytra] interstices are a 

 distinguishing feature. 



//. obscura, Borch. — I have rather doubtfully identified this as 

 a very common Western Australian species, found in most collec- 

 tions, and taken by myself at Perth, Armadale and Gin-gin. The 

 description is meticulously detailed in head and mouth characters, 

 which are common to many species (or only microscopically differen- 

 tiated), while it omits important details in elytral sculpture, in 

 which the Cistelidae vary greatly. From the other opaque black 

 species obscura (as identified by me) is distinguished by its large 

 somewhat rectangular seriate punctures separated by subcancellate 

 ridges, on the same plane as the convex intervals. There is a 

 specimen in the Brit. Mus. consignment bearing a MS. name by 

 Bates. 



//. arida and //. sifieas, Blackb., have been included in my tabula- 

 tion, since they are among the few species tabulated by that author. 

 "They are unknown to me. and appear very slightly differentiated. 



Allecula rugulosa, Bois. — Specimens so labelled by Blackburn in 

 his coll., and evidently referred to (Trans. Roy. Soc, South Aus.. 

 1891, p. 323), are, I find, identical with Ommatophorus Mastersii, 

 IVfacl. 



7a 



