198 [September, 



pattern of the back as seen through the membrane ; the ajiical segment has a pale, 

 central, parallel-sided line, extending from the apex, with a black stripe on each side 

 of it, whereas in our other species tlie centre is black and the line bordering it pale. 



Berttina. 

 Metacanthus punctipes, Gerin. = M. elegnns. Curt. 



Aphanina. 

 Ploclomenis, Fieb. = Paviera^ Say. 

 Sli/f/iiits, Fieb. = Styr/iwcoris, D. and S. 



,. areiKiriua, Hahii. ^ fulir/ incus, Fourc. 

 Peritrechus luni(/ei\ Schill. = P. si/lvestris, V. 

 Aphanus rolandrl =^ Cdlifptmotus rolandri, L. 



„ pcdestris, Pz. ^ albo-acuminafus, Goeze. 

 Beosus lusGus, F. = B. maritimus, Scop. 

 Scolopostethus neglectus, Edw. = S. fhomsoni, Keut. 

 Notochilus contractus, D. and S. = N. hamulatus, Tlioms. 

 Dn/mus pilicorniy, Saund. = D. latus, D. and S. 



pillcornis, M. and K (Ent. Mo. Mag., xl, p. 275). 

 We are indebted to Mr. E. A. Butler for the introduction of thia 

 species, and for the above corrections consequently necessary in our 

 synonymy. 



It differs from the piliconiis of our books in being smaller (3 — 3^ mm.), in 

 having the anterior tibitt; of the ^ mucii curved and not bo abruptly dilated at the 

 apex, in having the anterior femora of both sexes with one large and five or six 

 minute teelh, in having the abdomen beneath shining and quite smooth without 

 scattered wrinkles, its basal segments with a few scattered but distinct hairs, and 

 the apical margin of the 4tli segment without a fringe of hairs. 



TlNOIDINA. 



Dictyonota crassicornis, Fall. = D. tricornis, Schr. 

 Monanthia costata, Fieb. = M. fahricii, Stal. 



Gerridina. 

 Gerris costce, II. -S. = G. lateralis, Schum., var. costoB. 



Emesina. 



Ploiaria auct. = Ploiariodes, Buch White. 



Ploiariodcs bai:renspitin()i, Dohrn. (Ent. Mo. Mag., xxxiv, p. 217). 



Kecorded by Mr. Champion from Esher, " beaten from a slack of 

 cut pine branches," August 30th, 1874, and from the New Forest, 

 June, 1894. 



It is, as Mr. Champion points out, readily recognisable by the erect black spine 

 at the centre of the base of the pronotum ; this rises immediately in front of the 



