196 bulletin: museum of comparative zoology. 



Sulcus on head discontinuous near middle and again toward the labral 

 region. Foveolae 2 + 2. Median incision in lower margin wide, the tooth 

 correspondingly broad, distaUy truncate or rather sUghtly concave. 



Collum margined below and more weakly about the anterior corner in 

 front, with a fine longitudinal sulcus or stria, as is frequent, at level of eye on 

 each side, joined above by two short transverse ones. Surface coriarious, 

 the markings coarser below. Not reaching lower level of the second tergite. 



Surface of other tergites in general marked with numerous exceedingly fine 

 puncta which caudad on each segment tend to give rise to exceedingly short, 

 fine, longitudinal striae. Below level of pore with numerous longitudinal 

 striae forming an obtuse angle at the suture, a few more widely separated 

 ones also above level of the pore. Suture fine, extending up to level of pore 

 about which it bends but obsolete above this level. On the more anterior 

 segments, however, the suture is distinct entirely across the dorsum and in 

 front of it on each side one or more of the striae above the level of the pore 

 curve transversely and are elongate, on the fifth, sixth, seventh, and eighth 

 segments forming a complete secondary sulcus in front of the ordinary one. 

 Scobina small and short, lunate pits occurring on segments from the tenth or 

 eleventh to the twenty fifth. 



Anal valves exceeding the tergite, protruding, but mesal borders scarcely 

 set off by compression. Surface of valves and tergite with numerous ex- 

 ceedingly fine points as in other segments but otherwise smooth. 



Number of segments, sixty to sixty-two. 



Length (female), near 150 mm.; width, 13.5 mm. A second female has a 

 width of 15 mm. 



The species may be readily distinguished by the structure of the 

 gonopods. In these the median piece has the basal part transversely 

 oblong with the anterior margin convex; the distal part exceeds the 

 basal in length, and is constricted at base, above which it is oblong- 

 lanceolate in form. The telopodites of the posterior pair are very long 

 and cross each other in the middle line; the outer piece is especially 

 long and evenly curved, becoming very fine distad; the inner branch 

 is very short and slender in comparison with the other, lying much 

 below the middle of it. 



577. DiNEMATOCRICUS PELLOTROPIS, Sp. nov. 



Type.— M. C. Z. 4,953. Fijis: Mt. Victoria (W. M. Mann). 



General ground color fulvous of a vague greenish cast on sides and above 

 often showing a weak ferruginous tinge; surface of keels black, the color of 

 the two sides often nearly uniting along caudal edge of plate, often ending 

 abruptly at prozonite or else extending a varying distance upon the latter and 

 spreading or not, commonly a spot in middorsal region; on first several 



