in the British Museum. 123 



the tcrgitcs that no room is left between; they are very 

 dilficult to distinguish from eaeli other. The concavity of the 

 stcrnitcs is consistently equal to the convexity of the termites. 

 The last two pairs of coxie are, on account of the curvature, 

 covered by the first two pairs, and not visible unless the 

 whole animal be stretched out. The antennre are without 

 any connection whatever with the head, and fastened to the 

 hindmost part of the maxillic by a thiu membrane. Other 

 specimens were examined, which were killed during the 

 moult. One, for instance, had the whole cephalothorax, 

 front portion of abdomen, and femur of the palps free. The 

 cast skin of tiie cephalothorax was placed as a cap on the 

 top of its abdomen. 



Chelifer ecjuester, sp. n. 

 (PI. VIII. figs. 3 a-d, PI. IX. figs. 1 a-f.) 



S . Cephalothorax. — Two indistinct Avliite ocular spots 

 present. The cephalothorax, which is as broad behind as it 

 is long, has the sides slightly curved outwards ; in front 

 they aj)proach each other, so that the front is much shorter 

 than the hinder margin. There are no transverse grooves, 

 but the head is nevertheless very well marked off from the 

 thorax by being darker and more raised. The skin is 

 minutely dotted, and bears a few moderately slender and 

 clavate hairs in front as well as along the hinder margin of 

 the thorax. 



Abdomen. — The abdomen is distinctly longer than broad, 

 and its dorsal sclerites are of almost equal breadth, but the 

 first three are much shorter than the following, which in- 

 crease slightly in length towards the tenth tergite. The 

 hinder margin of the sclerites of at least the first two tergites 

 is raised. All the tergites from the fourth (third) to the 

 tenth are divided by a longitudinal line, which is rather 

 imperfect in the middle of each sclerite. The granulation 

 is indistinct ; each sclerite possesses a hinder row of twelve 

 long, slender, and dentate hairs, each placed in the middle 

 of a yellow spot ; laterally at least one pair of hairs in front 

 of the row on the hindmost segments ; the hairs of eleventh 

 tergite placed without order. Tenth and eleventh tergites 

 Avith two pairs of exceedingly long and pointed ''tactile^'' 

 hairs. The fourth to the elcveutli sternites are similar to 

 the tergites, and, like them, longitudinally divided; but the 

 fourth is much narrower than tlie others; the twenty-four 

 hairs of each sternite, which are placed in transverse rows, 

 are moderately slender and almost simple ; the eleventh 

 sternite bears at least three pairs of tactile hairs in addition 



