112 DE. J. E. T. AITCHISON ON THE ZOOLOGY OF 



3. Dysdeea concinna (L. Koch). 



Dysdera concinna, L. Koch, Kauk. Arachn., in Isis, Dresden, p. 43 (1878). 



One specimen ( ? ) between Hari-rud valley and Meshed. 



In this specimen the legs appear to he less hairy than in the one described by L. Koch ; 

 otherwise the two seem to be alike. There is a resemblance also between it and Dysdera 

 aculeata (Kronenberg, in Fedchenko's ' Turkestan,' Arachn. p. 25, pi. ill. fig. 17), of 

 which the male only was known ; and I am disposed to think that the two may be sexes 

 of the same species. But the spine-armature of the patellae is different in the two forms. 

 Thus Kronenberg's type has four spines on the outer and two on the inner side of all the 

 patellae, while this Afghan specimen, which I refer, though with some hesitation, to 

 1). concinna of L. Koch, has no spines upon the patellae of the first two pairs, three upon 

 the outer and two upon the inner of the third pair, and three upon the outer and one upon 

 the inner of the fourth pair. 



4. Nemesia tubifex, sp. n. (Plate XIII. fig. 2.) 



Colour. — Cephalothorax and legs castaneous ; chelicerae darker ; sternum and coxae 

 ochraceous ; abdomen testaceous, ornamented above with a somewhat purplish band, 

 which at the hinder end of the body narrows to a point and breaks up into five short, 

 oblique bands. 



Cephalothorax ovate, with anterior border truncate, posterior border rounded laterally, 

 triangularly excised in the middle line. The transverse sulcus is straight and not convex 

 forwards as in N. ccementaria. Cephalic portion sharply defined by lateral grooves, 

 somewhat high and rounded. Width of cephalothorax equal to about three quarters of 

 its length. Anterior central eyes about as widely separated from each other as they are 

 from the anterior lateral eyes, circular and situated slightly behind the line of the anterior 

 lateral eyes ; anterior lateral eyes the largest of the series, somewhat ovate ; the 

 posterior two eyes on each side small, circular, set close together behind the anterior 

 lateral eyes. 



Appendages. — Chelicerae projecting forwards ; constricted above close to margin of 

 clypeus ; clothed above with shorter and finer hairs, which below anteriorly become 

 longer and coarser, and ultimately pass into a series of long spines which overhang the 

 proximal end of the fang ; fang slender, curved, unarmed. Maxillae clothed in front 

 with long hairs, and furnished proximally on the inner side with many small, black, 

 blunt, close-set teeth. Upper surface of palp nearly naked, under surface clothed more 

 or less sparsely with long hairs intermixed with fewer spines ; apical segment thickly 

 clothed beneath with short, close-set hairs. Eirst leg the longest, third the shortest, 

 second and fourth approximately equal in length ; upper surface of legs for the most 

 part naked, under surface scantily clothed with hairs interspersed with spines ; tarsi 

 thickly clothed below with short close-set hairs ; the four distal segments of the third 

 pair of legs clothed with hair, which is particularly abundant upon the patella and tibia, 

 patella and rlistal end of femur of fourth pair anteriorly clothed thickly with hairs ; meta- 



