40 THE entomologist's record. 



Ripcrgia subtenanea, Newst. — Newstead {loc. cit., p. 79) records 

 this species from the nest of Lasius flavus on a raised shingle beach 

 at Ingoldisthorpe, near King's Lynn. 



Iiipersia to)nlini, Newst. — I first discovered this species in Britain 

 on April 19th, 1901, in the Isle of Portland, where I found it in 

 numbers in the nests of Lasiii>i lu'iicr. It was first described by Mr. 

 Newstead from species taken by Miss Tomlin in nests of Tetraworium 

 caespituin and Lasius alienns in Guernsey. I introduced specimens 

 into my " observation nest " of F. ntfa ; the ants paid no attention to 

 them beyond touching them with their antennse. I forced several 

 ants to take hold of specimens of the Coccid, but they always dropped 

 them without hurting them. They lived in the nest for some time, 

 but died from the want of proper food, grasses, etc., to suck. 



Thysanura.— PoDURiD.E. — Bevkia alhina, Nicol. — Sir John Lubbock 

 {loc. cit., p. 74) remarks that this insect belongs to the class of guests 

 which reside actually in the galleries and chambers of, and with, the 

 ants, but which the latter never touch. He continues, " It is an 

 active bristling little being, and I have kept hundreds, I may say, 

 thousands, in my nests. They run about in and out among the ants, 

 keeping their antennae in a perpetual state of vibration." Wasmann 

 {loc. cit., p. 189) refers to it as " Absolut panmyrmekophil." I have 

 taken it with Fonnica rufa at Oxshott, Weybridge and the Blean 

 Woods, with Lasius fulif/inosus at Oxshott, with Fmiuira sa)t;/uinea at 

 Weybridge, and with Mynuica sulcinudis at Woking, and have often 

 seen it running about in my " observation nest " of /•'. rufa. I last 

 observed a specimen on January 8th, 1902, running about under a 

 dead ant. 



Orchesella riiicta, L. — I have often found this species in numbers in 

 the nests of Futinica rufa and Lasius fuli(/in»sus at Oxshott. 



{To he cotitinued.) 



On the systematic position of Gelastorrhinus, Brunner. 



By MALCOLM BURE. B.A., F.Z.S., F.E.S., F.L.S. 

 In 1893, Brunner established this genus for a new species from 

 Burmah, with the remark, " Ce genre affecte completenient la livree 

 de certaines Tryxalides, notamment du genre americaiu Arhurum. La 

 presence d'une dent minime sur le prosternum m'engage a le placer 

 parmi les Mcsopcs. J 'en connais trois especes, dont une du Japon, une 

 de Madagascar et de Ceylon, et la troisieme de Birmanie." This 

 latter is described under the name G. alholineatus, and so becomes the 

 type species. The species from Madagascar has been since described 

 by de Saussure under the name (i. edax; a little over a year ago I 

 had the opportunity to study these insects, and found also a new 

 species from Java and from Sikkim, so there are five species in the 

 genus, of which two are already described. V'eiy closely allied to 

 Gelastorrhinus is JUiaiiinotatuui, McNeill, with the single species, Jl. 

 brevipemw, Thos., but this genus is next to Achuruiu, Sauss., in 

 position, also an American genus, containing a couple of species. But 

 Achurum is ranged by Brunner in the group Hi/alojitcri/i/cs, that is, in 

 the Truxalidac, and, on a close comparison, it will be found impossible 

 to separate Gclastorrliinus, so that, in spite of a minute tubercle upon 

 the sternum, it miist be removed from its unnatural position among the 



