162 



closed behind — calling all those sulci which are closed behind 

 "sharply defined, deep," &c., without specifying more exact par- 

 ticulars. The study of more specimens and species has led me to 

 the conclusion that such a classification is not satisfactory as it 

 places in the first division one species (' Iifide)ise } whose prosternal 

 sulci are really more like those of the second division (because — 

 and I think the observation was correct — its sulci are finely 

 closed along their hind margin). Tfds character however, it is 

 very difficult to be certain about unless a specimen is available 

 for dissection, and therefore I now regard the species as grouped 

 according to whether the inner margin of the sulcus ends on the , 

 hind margin of the prosternum at a distance from the hind end 

 of the outer margin or ends in contact ivlth the outer margin. 

 This renders it neceseary to remove lindeiise from the first to the 

 second group. 



I observe, in all the Australian Trogoderm^ta that I have 

 examined, that the basal ventral segment has an oblique stria on 

 either side not unlike those which are found in Diploccelus. I 

 do not find this character referred to in any diagnosis that I 

 possess of Trogoderma, and am not able to say whether it is 

 present in Trogodermita from other countries than Australia. 



Tabulation of the Australian Trogodermata. 



A. Eiytra covering the hind body — not separately rounded at the apex. 

 B. The inner margin of the prosternal sulci ends in contact with the 

 outer margin. 

 C. Elytra with erect comparatively long pilosity. 

 D. Elytra with an antemedian red fascia ... Froggatti, Blackb. 

 DD. Elytra with a red humeral spot ... Reitteri, Blackb. 



DDL). Elytra without defined antemedian red 

 markings. 

 E. General colour of elytra red. 



F. Antennal club of male eight- jointed 



and strongly pectinate ... ... M acleay i, ^\a,ckh. 



FF. Antennal club of male six-jointed and 



stroDgly serrate ... ... tolarnense, Blackb. 



EE. General colour of elytra black or dark 

 piceous. 

 F. Club of antennte serrate (possibly pec- 

 tinate in the unknown males). 

 G. Club of antennas of dark colour. 

 H. First joint of antennal club in 

 female very small and very 

 strongly transverse ... ... alpicola, Blackb. 



HH. First joint of antennal club in 

 female notably larger and less 

 transverse ... ... apicipennis, Reitt. 



GG. Antennae entirely testaceous ... baldiense, Blackb. 

 *FF. Club of antennae not serrate. 

 G. Stipes of antennae testaceous. 



H. Puncturation ol aisc of pronotum 

 comparatively sparse. 



