BY A. SIDNEY OLLIFP. 653 



as the diagnosis of L. apicalis by its founder is quite inadequate 

 for the determination of a species in this or any other group, I 

 am in some doubt as to the correctness of my conclusion. The 

 only specimen I have seen was obtained during Sir T. L. Mitchell's 

 Victoria River Expedition, but in what locality I have no know- 

 ledge. It is luteous, measures 9 mm. in length, and is unusually 

 robust, the elytra being nearly 4 mm. in width at their middle ; 

 the head is black, the elytra (which have faint indications of 

 four costse) pitchy at the apex ; beneath the last two segments 

 are yellowish-white (apical one rounded behind, very slightly 

 produced in the middle), the preceding segment margined with 

 piceous posteriorly ; tarsi and tips of the tibiae fuscous. 



L. Jiavicollis has well marked sexual characters which may be 

 defined as follows : — 



(J Abdomen with penultimate segment and a semicircular 

 basal spot on apical segment luminous ; the apical segment 

 deeply emarginate on each side, very strongly produced between 

 the emarginations, the produced portion with nearly parallel 

 sides, the apex feebly emarginate. Eyes very large. 



5 Abdomen with penultimate segment luminous, apical seg- 

 ment feebly emarginate in the middle ; small supplementary 

 segment rounded behind, complete. Eyes moderately large. 



By the light of additional material which I have seen from 

 Rockhampton and Port Curtis, Queensland, I am in a position to 

 affirm that the suture in this species, like the sides, is luteous to 

 within a short distance of the apex. 



I am informed by those who are acquainted with the haunts 

 of L, fiavicollis that its light is intermittent. 



