Falconer: British Pseudoscorpions. 193 
Chernes insuetus Camb., two examples obtained in 1880 
in Dover oil mills; probably introduced with sub- 
stances used in the mills, and not British at all. 
Chernes phaleratus Sim., so named in error, being really 
referable to C. scorpioides Herm., since recognised as 
a British species. 
Seven species have been added to the British list, of which 
Chernes godfreyi Kew and C: wideri are not dealt with in my 
Keys. The former belongs to the same section I. as C. nodosus 
Schr. and chyzeri Tom., with the body polished and a tactile 
hair on tibia IV ., and the latter to the same -II. as C. scor- 
piodes Herm. and C. dubtus Camb., with the body unpolished, 
and tibia IV. without a tactile hair. 
I.—The broad upper protuberance of the trochanter of 
the palp showing on the posterior margin well distinguishes 
chyzert from godfreyt and nodosus, in which the same part is 
narrower and does not show on the posterior margin. In 
godfreyt the tactile hair on tarsus IV. is near the middle of 
the joint, and in nodosus one-third from the base. 
Il.—C. wideri, scorpioides and dubius have an isolated acces- 
sory tooth on the anterior margins of the forceps, and the 
ventral face of the maxillae granulate. The tactile hairs of 
abdominal segment XI. are absent in wideri, and present in the 
5 
other two; scorpioides has a tactile hair on tarsus IV., which 
dubius does not possess. 
III.—The rest of the genus Chernes belongs to the same 
section as II. supra, but the anterior margins of the forceps 
are provided with a series of accessory teeth, and the ventral 
face of the maxillae is smooth or nearly so. C. cimicoides alone 
has no tactile hair on tarsus IV., and the palp of C. cyrneus 
unlike that of C. panzeri is brilliantly glossy. 
Chelifer subruber Sim. is made the type of a new subgenus 
Withius Kew. 
A.—Legs I. with articulation between the trochantin 
and femur wide and oblique .. ae .. Chelifer 
B.—Legs I. with this articulation rather narrow and 
nearly perpendicular .. : Ec . Withius 
All members of these two genera are without accessory 
teeth on the margins of the forceps, and may thus be distin- 
guished from Chernes. 
Roncus cambridgu L. WKoch, having falces furnished at 
extremity of moy rable fang with a transparent cylindrical 
apophysis known as a galea, enters the genus /deoroncus Balzan. 
————_—.> = —__—___ 
he Eighteenth Report of the Leicester Museum and Art Gallery 
includes the gratifying statement that the long projected extension and 
reconstruction of the buildings have at last been commenced.  Illustra- 
tions of the proposed additions are given. 
1gtt May t. 
