54 Mr. R. Templeton's Description 



a little longer than broad, and constricted in the middle, beneath 

 appearing as a little cup, from the concavity of which arises the 

 third joint. These two joints are thickly covered with short rigid 

 hairs, in this particular differing essentially from the two suc- 

 ceeding (rs), whose entire surface is tessellated, in tolerably regu- 

 lar transverse rows, the tessera (Ct^ and Ct) preserving nearly the 

 same size and form, about 7-12 in each cross row, the intervals 

 filled with minute, scarcely elevated, rigid hairs. In form, the 

 third joint (r) is flat, elongate, dilated in the middle, rounded at 

 the apex, and at the base turned suddenly off at right angles, 

 forming a little cup, the convexity of which rests in the hollow of 

 the second joint, and the concavity supports the fourth joint (s), 

 which lies behind and above the prolonged part of the third joint, 

 exceeding it in length about one-fourth part, and, like it, dilated in 

 the middle, and a little at the base posteriorly. 



The eyes (B«) are supported on short thick tubercles, are 

 hemispheric and compound, the facets, ten or twelve, in the 

 longest row, subpentagonal, amount to about seventy, certainly 

 not less than that number, and are separated by narrow spaces, 

 filled with dense, minute, black ciliae. 



Beneath the head presents anteriorly a rounded orifice (b) 

 leading into the pharynx, the margin slightly corrugated, and on. 

 each side of it lie the inner edges of the elongate, narrow, slightly 

 arched mandibles (e), which arise on each side beneath the irre- 

 gular elevated edge of a horny plate (J), that stretches inwards 

 from the root of the ocular peduncle; they pass inwards and for- 

 wards, and end with an extremely sharp incurved apex. Imme- 

 diately behind the mandible, and from beneath the same plate, 

 which curves a little inwards, in forming the articulating surface, 

 is found the root of the triarticulate palpus (f) ; the first joint 

 minute, the second large, tumid, and a little curved backwards ; 

 the apical small, cylindric, and densely covered with minute 

 hairs. 



The adjoining part of the neck (g) is membranous, and thrown 

 into folds, in the motions of the head. Posterior to this part, we 

 find the antipectus (h), a transverse horny plate, elevated in the 

 middle, from behind which originate the coxa («) of the forelegs. 

 This plate, like all the succeeding, does not form a ring, encircling 

 the trunk, but terminates at the side, where it has merely a mem- 

 branous connection, with the posterior division of the prothorax, 

 an arched plate seen from above immediately behind the ocular 

 peduncles. Between the antipectus and the medipectus (w'), to 

 which on each side the coxa (/•) of the second pair of legs is 



