Coleoplera of the Falkland Islands. 171 



example (.sex not stated) with the elytral interstices somewhat 

 convex, a form also to be found now and then amongst the 

 specimens occurring on the mainland. The male has joints 1-3 

 of the anterior tarsi considerably widened, and the intermediate 

 tibiae curved, as well as strongly sinuate within. The basal 

 joints of the antennae and the tibiae and tarsi are more or less 

 testaceous. The third elytral interstice usually has two or 

 three small pores along the apical half, sometimes indistinct 

 or wanting. 



This insect, according to Mr. Cameron, is common on the 

 sea-shore at Port Stanley. 



6. Dormeyeria audouini, Griierin. 



Hab. Falklands [Pes Malouines], Soledad Bay, Port 

 Stanley, and Hooker's Point ; Straits of Magellan. 



This Trechid and the following species, placed by Ender- 

 lein under his new genus Dormeyeria, are apparently not 

 lepresented in the Museum. 



7. Dormeytria soledadina, Griierin. 



Hah. Falklands [lies Malouines], Soledad Bay, Port 

 Stanley, and Seal Cove. 



8. TrecJius antarcticus, Gruerin. 



Hab. Falklands [lies Malouines] (C. Darwin, R. Val- 

 lentin, C. J. C. Pool), Port Stanley (.1/. Cameron) ; TlEERA 

 DEL FUEGO, Navarin Isl. (C. Darwin) ; PATAGONIA. 



A long series seen, including one specimen from Navarin 

 Island. 



9. Merizodus ma'-eyi, Bates. 



Hub. Falklands (C. Darwin, Capt. Macey, J. Mac- 

 gillivray, R. Vallentin, C. J. 0. Pool), Port Stanley {Col. 

 A. M. Reid, M. Cameron) ; TlERRA DEL FUEGO, Piotonlsl., 

 Beagle Channel (sec. Fairmaire), &c. 



More abundant in the Falklands than T. antarciicus, and 

 apparently occurring in company with it. The Museum 

 received a long series of it in 1851 from J. Maegdlivray. 



Dytiscidae. 



10. Lancetes Jlavoscutatus, Enderlein. 



Hab. Falklands (R. Vallentin, M. Cameron), Speedwell 

 Isl., Halfway Cove {type, % ). 



12* 



