270 



Rev. T. A. Marshall's monograph of 



(12) 1, 



Table of Species. 



Second abdominal segment smooth, 

 or with only some faint rugulosity 

 at the base of the curved trans- 

 verse impression. 



Mesothorax rufous . , . . . . .' 



Mesothorax black. 



Hind coxcTB rufous . . . . .. c 



Hind coxae black. 



Hind tibifE rufous, their ajjex fuscous. 



Segment 2 more or less testaceous ; 

 (length, 3 lines) 



Segment 2 entirely black. 



Orbits and squamulffi black ; length, 

 3 lines 



Orbits partly, squamulae wholly, 

 rufous ; length, 2J lines . . 



Hind tibia? white and black . . 



Second abdominal segment wholly or 

 partially striolated. 



Third segment entirely smooth. 



Mesothorax rufous . . 



Mesothorax black 



Third segment with one half at least 

 rugulose. 



Hind coxffi rufous ; sometimes black 

 at the base . . 



Hind coxas black. 



Hind tibiffi half white, half black . . 



Hind tibiie rufous, their apex black 



5. calculator, var. 



3. tumidulus, var. 



1. linguarius, Nees. 



2. Clan St kali anus, Eatz. 



tumidulus, Nees. 

 ciniiulipes, Nees. 



calculator, Panz. 

 brevicaudis, Reinh. 



7. rujipes, Nees. 



rugulosus, Nees. 

 mediator, Nees. 



1. Microdus linguarius, Nees. 



Microdus linguarius, Nees, Mon., i., 149 ; Reinh., Berl. 

 ent. Zeit., 1867, p. 149, <? ? . 



Black, shining ; palpi black ; legs rufo-testaceous, coxae and tro- 

 chanters black, hind tibiae sometimes, and tarsi always, fuscous at 

 the apex; segment 2 rufo-testaceous at the sides and above, where 

 there is a more or less extended, isolated, black patch. Wings 

 rufo-fuscescent, squamulae black, nervm-es and stigma fuscous. 

 Face triangular, subproduced. Antennae 27 — 30-jointed. Meso- 

 pleurie subrugulose beneath, with a crenulate fovea. Metathorax 

 reticulato-rugulose, with 2 approximate carinas, diverging in the 

 middle. Segment 1 striolated, depressed at the base, where the 

 margins are obtusely raised, emitting 2 faint carinse, which are 

 effaced before the middle ; gibbous posteriorly ; the other segments 

 smooth and shining. Nervure between the 1st cubital areolet and 

 the prsediscoidal widely interrupted. Terebra longer than the body, 



