520 MB. F. G. SINCLAIR ON THE [Dec. 3, 



57 somites. About 40 mm. 



Colour in male rather brown than grey, fine line down back. 

 Head same colour; antennae same colour; legs yellow. 



Immature female lighter in colour, yellow, with the brown only 

 showing at the top of the segments. Head and first few somites 

 darker ; antennae dark. 



Head with two pores on forehead. Eyes about seven rows. 

 Lateral margin of 1st fcergite rounded. The rest of Pocock's 

 description answers, with the exception of the hinder border of 

 the tergites, which is not pectinated so far as I can see. 



As there is only one male example, I did not feel myself at 

 liberty to dissect out the copulatory apparatus. 



Order ONISCOMORPHA Pocock. 



SriLT.EOPCErs evansi, sp. nov. (Plate XXXI. fig. 57, and 

 Plate XXXII. figs. 79, 80, 83, 91.) 



Length 40 mm. by 20 mm. 



Colour. Head and 1st somite piceous ; rest of body piceo- 

 castaneous on upper part of somites, shading into clear testaceous, 

 with a green tinge irregularly blotched with black so as to have 

 the appearance of tortoise-shell. Legs and antennae the same 

 greenish testaceous when seen by transmitted light. "When seen 

 as an opaque object, the hairs with which they are clothed give 

 them a dull greenish-brown appearance. 



Head somewhat conical in shape. On the upper lip there is a 

 raised, smooth, black plate, cut out in the centre so as to form 

 a single tooth with a depression on each side (fig. 20 a). The 

 surface of the head is rough, punctuated and covered with 

 bristles. There is an indentation in the middle of the forehead 

 where it joins the middle of the 1st tergite. Eyes in a large 

 round cluster. Antennae with the last joint largest, and a 

 large punctated pad at the end. 



]st tergite smooth, curved, and not surpassing the eyes in 

 breadth. 



2nd tergite large, with straight anterior and posterior borders. 

 There is a strong ridge on the anterior margin, accentuated from 

 the level of the eyes, and becoming broader at the base posteriorly 

 where it forms a broad depression, thickly covered with hairs. 

 The raised smooth part of the tergite near the lateral extremity 

 is emarginate and ends in a fairly sharp point. The depressed 

 extension of the border furrow curves backwards beneath the 

 2nd tergite. 



3rd teri/ite small and with a lancet-shaped extremity. 



4th tergite with the anterior border cut away by a groove or 

 depression which, like that of the second, is full of hairs, leaving 

 the smooth part lancet-shaped. 



5th tergite. The depression is more cut away so as to leave the 

 lancet-point directed more backwards. In the 11th it is less cut 

 away, and the point is rather square and truncated. In the 12th 



