43S Mr. R. E. Turner on Fossorial Ily nienoptera. 



Bemhex albiduJa, sp. n. 



cJ . Niger; abdomine cferuleo-tincto ; mandibulis, apice excepto, 

 labro, clypco macula magna basali nigra utrinque, scapo subtus, 

 orbitis, macula parva utrinque sub ocellis, prosterno, callis 

 humeralibus apice, segmento mediauo angulis posticis, segmentis 

 dorsalibus 2-4: fascia late interrupta, primo macula magna 

 utrinque, quinto fascia auguste interrupta, sexto linea transversa 

 utrinque, segmentis veutralibus secundo tertioque macula parva 

 utrinque, femoribus anticis intermediisque subtus, tibiis supra 

 uigro-liueatis, tarsisque anticis intus albidis ; alis byalinis, venis 

 fuscis, anticte latitudine thoracis duplo et dimidium longiores. 



Long. 22 mm. 



cJ . Eyes distinctly divergent towards tlie clypeus ; labrum 

 flattened^ clypeus convex; carina between the antennaj very 

 low. Antennpe almost normal; eighth joint of the flagellum 

 with two very minute spines beneath ; ninth with a minute 

 spine near the base; apical joiut slightly curved, rounded at 

 the apex, longer than the penultimate. Fore tarsi mode- 

 rately stout, the joints not dilated ; the basal joint with seven 

 spines, the basal spine small. Fore and intermediate femora 

 unarmed, intermediate tarsi simple, intermediate tibiaa not 

 ])roduced at the apex and without a long apical spur. 

 Seventh dorsal segment subtriangular, narrowly rounded at 

 the apex, closely punctured at the base, sparsely at the apex. 

 Second ventral segment with a small tubercle near the apex ; 

 sixth produced into a stout blunt tooth at the apex ; seventh 

 unarmed, without caringe; eighth in the form of an acute 

 spine. ^Jedian cell of the hind wing emitting two veins from 

 the apex. 



Ilah. Sierra Leone, Mussaia (/, J. Simpson), April. 



This fine species is somewhat intermediate between diversi- 

 pennis and monedula, but seems to belong to the group of the 

 latter, though distinguished from it by the spines on the 

 eighth and ninth joints of tlie flagellum, and by the much 

 narrower seventh dorsal segment. Handlirsch, in giving tlie 

 distinguishing characters of the group, says " Mittelschenkel 

 gezahnt,'^ but in describing the species says " femoribus inter- 

 mediis infra non dentatis." The latter statement is correct. 



B. uga7idensis, Turn., is also near this species, but differs 

 in the structure of the antennae, the hollow grooves beneath 

 the three apical joints being well marked in ugandensis and 

 almost obsolete in the present species, the spines 0!i the other 

 joints are also different. The colour-differences, though 

 crieat and apparently constant locally, cannot alone be relied 

 on in this group. 



