CRU8TACKA — WHri'KI.KCC K. 



255 



lilies well di'Hiiecl. Terminal set^ineiit large ; the sides are 

 sinuous and the extremity rather narrow, rounded and entire. 

 The first epiniei-al process is 

 produced in front to the 

 anterior margin of the eye ; 

 the posterior border is trans- 

 verse and the posterior angle 

 is subacute; the second, third, 

 and fourth, when viewed from 

 the side, are narrow, wide 

 apart, and obtusely pointed ; 

 the fifth and sixth have their 

 apices broadly rounded ; the 

 seventh is short, and acutely 

 pointed. Side plates of the 

 pleon curved and subspatulate. 

 Eyes lateral, not prominent, 

 with their posterior two-thirds 

 imbedded in the anterior part 

 of the first peraeon segment. 

 Basal joints of the first 

 antennte moderately stout, 

 visible from above, and pro- 

 jecting beyond the fi'ont ; 

 their inner bases are separ- 

 ated by the median cephalic 

 process ; the second joint is 

 received into an excavation 

 of the end of the first. Flagel- 

 lum much shorter than the 

 peduncle, consisting of eight 

 joints; the second is a little body viewed from above. 



shorter than the first or third, ^^S' ^^'^• 



fourth and fifth equal, longer than those preceding or following. 

 First and second joints of second antennae equal, both of which are 

 widened distally; third joint of nearly equal width throughout, and 

 as long as the two preceding joints combined ; fourth joint a little 

 longer than the third, with the base narrower than the apex. 

 Magellum equal to the peduncle, with ten subequal joints. 

 Mandibles strongly bent distallj'-, the cutting edge tridentate, 

 with a blade-like lobe at its inner base, tipped with three teeth, 

 the median one being small ; a few denticulated spines are also 

 present. Molar tubercle prominent, and apically encircled with 

 short, stout, simple spines. Palp consisting of three equal joints. 

 Inner lobe of first maxillae narrow, tipped with four pectinated 

 setse. Outer lobe gradually tapering from the basal third to the 

 apex : the latter bears about fourteen denticulated spines. The 



