REVIEW OF FIELD WOKK IN 1911. 225 



Symphyla. — The classical Sciitinerella {Scolopendrella) iiiniiacidata 

 ■of Newport remained until recently the sole representative of its kind 

 in this countiy. In my synopsis''^ I am able to bring forward thirteen 

 species, many of which have since been found in other localities. 

 Scutiiierella tfinni/'cs, Bagn., ^'. biscutata, Bagn., S. hanseni, Bagn., 

 Scoluiiendrella diinehiunms, Bagn., S. horiida, Bagn., S. delicattila, 

 Bagn., and 6'. ininutissiiiia, Bagn., are described as new. 



DiPLOPODA. — I was particularly fortunate in stumbling across 

 several interesting species of Millipedes proper, the additions (not a few 

 of them quite conspicuous creatures) to the British list being as follows : 

 — Bradnjchaeteuina haijnaUi (gen. et sp. nov.), Yerhoeff, from Gibside, 

 & blind " square-backed millepede," which Verhoeff makes the type of a 

 new family! ; the little white Polydesinid, Tltanosoma Jiirassicin)i\, 

 Verb., in numbers from a Wear Valley dene, and sparingly from other 

 parts of the country ; Polijde)i)nus coriaceus, Porat, from Moles' nests. 

 County Durham; Microchoideutna sp. (? silvestre), from Gibside; 

 Isobate>i raricnrnis, C.L.K., from Durham aad Northumberland ; 

 Napoiidiis sp. (? jiabitatiis, Nemec). from a Wear Valley dene, with 

 Titanosuiiia, and the little prettily-marked var. perplexa of (rloiiieris 

 wargiiiata from Gibside and Teesdale:[. Tita)iosoii)a jnrai>s;icuiii was 

 previously only known from a single 5 found on the Danube, in 1910; 

 it would seem to be parthenogenetic. 



Chilopoda. — Two specimens of Lithobiufi from Gibside were 

 identified by Mr. Edv. Eiliugsen of Kragero, with some hesitation as 

 L. iiiiiiifrons, Haase, an addition to the British fauna. It is necessary 

 to obtain more material. 



Ectoparasites. — Perhaps the most interesting piece of work 

 attempted during the year lay in the commencement of a study of the 

 Arthropod ectoparasites of the birds and mammals of the North of 

 England, by Mr. Wm. Hall, of Fatfield, County Durham, and the writer. 

 At the end of the year we had listed 4 ticks, including the recently 

 described Ixodes caledouiciis, Nuttall, from a starling ; 28 different 

 fleas, including Trichupsi/lla dalei, Rothsch., in numbers from house- 

 martin's nests; T. caijabiouUis, Wagn., (insidaris, Rothsch.), from 

 cormorants ; Ti/jihlojisi/lla ila^i/meiiius, Kothsch., T. iH'utacauthds, 

 Rothsch., and Cteiui/isi/UKs siiectabilis, Rothsch., from small mammals ; 

 5 Hippoboscid flies, including the light green O.ri/ptenuii pallid it m, 

 Leach, from the swift ; bloodsucking lice {Anopliira) from various 

 mammals, and 84 or more bird-lice [yhdloiiluKja). This latter material 

 is forming the subject of a series of notes appearing in the Journal 

 ■of Economic Jliolo(/i/ and includes 80 or more species not, at 

 that time, recorded as British. In connection wuth the study of bird- 

 lice, I am of opinion that much remains to bo done as regards 

 .those that affect the commoner birds ; for instance, many of our most 

 interesting discoveries were from birds such as the commoner gulls, 

 •cormorant, teal (an apparently new Trinnton), starling, blackbird, 

 .swift and chaffinch, and I attribute the reason for this to the fact that 

 workers in the Mallophaga have secured their material chiefly from 

 Zoological Gardens, ornithological friends and poulterers, and thus 



* loc. cit., n.s., vol. iv., pp. 17-41, pi. i., and text figures, 1911. 

 t Zool. Aiizeiger, vol. xxxviii., p. 445., 1911, and 'Trails. Nat. Hist. Soc, 

 Northumberland, I)arJinin, and Newcastle, n.s., 1912. 

 I Zoolo()i.st, July, 1912. 



