368 Dr. Malcolm Cameron on 



Mimogonus J^'iuiv. 

 1. Cylindrical, black, shining; elytra 

 castaneous; fore-parts with rather 

 lai'ge su|)crficial })uncturcs. Length 

 2-75 mm. fiimnlor.Fauw 



Holotrochus Kr. 



1. Cylin(hica], black, shining; head and 

 thorax distinctly, elytra obsoletely 

 punctured. Length 3-3-5 mm. . [14:) 7ii I !ihis Gam. 



Osorius Latr. 



1 . Black, shining ; head closely and densely 



longitudinally strigose between the 

 eyes, the sides in front with fine aspeiate 

 punctures ; thorax finely and not veiy 

 closely punctui'ed. Length 7 mm. . rugifirms Fa: 



Stenus l^ati-. 

 L 4th tarsal joint bilobcd; abdomen not 

 bordered {Hy poslemis Rey). Black, 

 shining, each elytron with a small 

 lound orange spot ; antennae elongate, 

 the fii'st two joints testaceous, the 

 following reddish, the J)th to the 11th 

 black; palpi and legs testaceous. 

 Length 5 mm. . . . . ? bividiierahts JMotsch 



— Elytra without orange spot. . 2. 



2. Species in great part brown; head with 



smooth, elevated, longitudinal 



inipunctate sjiacc in the middle; 

 antennae elongate, the first two 

 joints testaceous ; legs testaceous, the 

 apex of the femora and base of the 

 tibiae infuscate .... {\{\) rasldiiciis Cam. 



— Species black. 3. 



3. Head between the eyes flat; species 



smaller, less shining, less coai'sely 

 punctured, antennae shorter, with the 

 1st joint pitchy. Length 3-3 mm. . ? mo)ioinerns Fan v. 



— Head between the eyes concave; species 



larger, shining, more coarsely 

 punctured, antennae longer, with the 

 1st joint testaceous. Length 3-75 mm. {\ri}fortej>inicl(ilits Ciun. 



