2t)8 Mr. R. E. Turner on Fossorial Hymenoptera. 



Subfamily PsiLAyiniNS. 



Cerceria expulaa, sp. n. 



$ . Nigra ; 'i^'loraine rufo-ferrujjineo ; mandibiilis basi, carina 

 interuntonnaii, macula parva utriiique pone oculos, tegulis macula 

 parva, postscutello linen transversa utrinque, tergito primo fascia 

 apicali, tibiisque extus tiavis ; alis fuscis ; flagello brunneo- 

 ferrugineo ; clypeo apice bidentato ; segmeuto mediano area 

 basali basi oblique, apice transverse, striata ; sternito secundo 

 area basali elevata nulla; area pygidiali nigra, elongata, apice 

 augustissirae rotuudata. 



<5. Feminae himilis; clypeo fascia longitudinali flava ; tegulis 

 immaculatis ; postscutello omniiio nigro; clypeo apice leviter 

 emarginato ; segmento mediano area basali oblique striata ; 

 sternito sexto angulis apicalibus spina longa armato ; area 

 pygidiali apice truncata. 



Long., $ Ki, c5" 11-13 mm. 



? . Clypcus broad, ratlier sparsely punctured, produced 

 just before t!ie apex into two .small tuberculate teeth, the 

 space below tlie teeth forming a smMll deflexed triangle; a 

 deep fovea at tlie inner angle of the lateral lobes of the 

 clypeus. Face broad, the eyes strongly divergent towards 

 the clypeus ; antennre inserted more than half as far again 

 from the anterior ocellus as from the base of the clypeus. 

 Head broader than the thorax, closely but not very deeply 

 punctured ; posterior ocelli much further from the eyes than 

 from each other. Head, thorax, and median segment clothed 

 with silver pubescence, which is most noticeable on the 

 clypeus, face, and pleur.ie ; the thorax and median segment 

 rather coarsely punctured. Abdomen sparsely and finely 

 punctured ; first tergite much broader than long ; [lygidial 

 area long and narrow, gradually narrowed from tlie base and 

 very narrowly lounded at the apex. 



'^ . Clyi)eu8 subcarinate longitudinally in the middle from 

 the apex to the middle; the apex very shallowly and lather 

 widely emarginate, the angles of the emargination slightly 

 produced. Eyes distinctly divergent towards the clypeus, 

 but not as falrcingly as in tiie female ; first tergite much 

 broader than long; sixth sternito with a long spine on each 

 side at the apical angles ; pygidial area parallel-sided, much 

 longer than broad, truncate at the apex, rugose. 



JJab. Calcutta district {Rothuey), ex coll. Cameron ; 1 ?, 



12 c?c?. 



This was identified by Cameron as C. vigilans, Sm., to 



which it bears u strong superficial resemblance ; but the 



