26 HYMENOPTERA ACULEATA. 



length, the two apical joints slightly thickened ; thorax 

 narrowed behind, and slightly sti-angulated between the 

 meso- and metathorax, the latter emarginate behind, with 

 the lateral angles rounded ; scale decumbent, rounded 

 above ; abdomen ovate, sprinkled with a few long hairs," 



L. 4 mm. 



The above is a copy of Smith's description, as I have 

 never seen the actual specimen described from. 



Bournemouth, J. G. Dale. 



(Prenolepis longicornis, Lafr. — The Rev. W. F. White 

 says that this species has existed in a large colony in a 

 rectory in the City for years ; it has also occurred at the 

 Crystal Palace, Exeter, Hastings, and in the tropical 

 houses at Kew Gardens. It may be known by its very 

 long slender legs, with which it runs at an extraordinarily 

 rapid pace. It cannot however be considered in any way as 

 a native.) 



(Plagiolepis flavidula, Beg. — An exotic species intro- 

 duced into some of the hot houses at Kew aud Cambridge. 

 The 5 is exceeding small and yellow, and may be known 

 by its eleven -jointed antenute, and its bright shining 

 surface.) 



TAPINOMA, Foerst. 



A genus easily known from its allies by the sharp notch 

 in the anterior margin of the clypeus. It really belongs to 

 a distinct tribe of the Fonnicidx, called the Dolichodevidse 

 of which it is the only British exponent. This tribe differs 

 from the Camponotidse to which our other three genera 

 belong, in having only four segments of the abdomen 

 visible from above beyond the petiole, in the ? and ? , and 

 also in having the aperture inferior and transverse, not 

 apical and round as in the Camijonotidse ; in the S all the 

 calcaria are serrate. ^ , antennee thirteen-jointed, ? and 

 5 twelve, labial palpi, four-jointed, maxillary six There is 

 only one European species. It makes its nest underground 



