258 



segment at sides not much longer than second, fourth shortest 

 of all, and rather distinctly produced backwards at sides. 

 Legs moderately long; tibiae feebly bispinose at apex. Body 

 winged. 



A curious genus, like so many whose species occur in ants' 

 nests; but evidently belongs to the Ulomides and near Uloma 

 and Heterocheira, from which it differs in its explanate pro- 

 thoracic margins and absence of elytral striation. The apex 

 of the third and fourth abdominal segments is not at all mem- 

 branous, and this, according to Leconte's classification, would 

 exclude it from the Ulomides, but certainly in some Aus- 

 tralian genera of that subfamily the membranous tip is either 

 very small or altogether wanting. Leconte also says the 

 trochanter of the middle coxa is sometimes absent and 

 "appears to me rather to be united with the mesosternum 

 than to be absolutely wanting." In his table of the divisions 

 of the Tenebrionides he states that in the Ulomini the troch- 

 anters of the middle coxae are obsolete. But in the typical 

 genus Uloma and in the allied genera Heterocheira and 

 AchthosuSy as also in the present one, a distinct trochanter 

 is visible on every leg. I cannot conceive also how portion 

 of a leg, essentially intermediate between the coxa and femur, 

 can by any possibility be united to the mesosternum. 



Camponotiphilus fimbricollis, n. sp. 

 PL xvi., fig, 9. 



Dark reddish-castaneous; shining. Upper-surface very 

 sparsely clothed with short pubescence, becoming slightly 

 longer and fairly distinct on margins of elytra ; on margins 

 of prothorax shorter and denser, forming a rather conspicuous 

 fringe. 



Head smooth ; very minutely and sparsely punctate, 

 gently undulated in front; distance between eyes less than 

 half the width of the head immediately in front of same. 

 Antennae scarcely as long as prothorax is wide at the base, 

 first joint concealed from above, second short, third longest 

 of all, the others to eighth feebly decreasing in length and 

 very feebly increasing in width, eleventh slightly longer than 

 tenth. Prothorax almost twice as wide as the median length, 

 rather deeply emarginate in front, front angles rounded off, 

 sides rounded, near base feebly incurved but hind angles 

 rather strongly produced and subacutely pointed, median line 

 short and vague ; with minute but fairly dense punctures ; 

 margins wide, average width about equal to space between 

 eyes. Scutellum transverse, slightly wider than an eye. 

 Elytra parallel-sided to near apex, very little wider than base 

 of prothorax, a vague impression near sides at basal third; 



