36 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



condition, the other two being normal. None of the other specimens 

 examined have bifid spines. It is therefore assumed that the bifid 

 condition is an abnormality and not typical of the species (the fact 

 that in the one specimen both right and left gonopods show exactly 

 the same bifid condition makes it improbable that the condition is due 

 to the ends of the spines having been broken). 



Brachoria insoUta, new species 



FiGTTEE 6d-f 



Diagnosis: Distinguished from all other species of the genus except 

 dentata by the position of the cingulum on the telopodite of the male 

 gonopods. DifTers from all species of the genus except mendota in that 

 the telopodite arc is primarily in a plane oblique to the longitudinal 

 axis of the body. 



Description: Length of male holotype, 41 mm.; width, 9 mm.: 

 length of other male specimens, 38-46 mm. ; width, 9-10.5 mm. 



CoUum subellipsoidal, curvature of edges somewhat irregular, ends 

 of paranota rounded; paranotal swellings absent; very weak ridges 

 along cephalic margins of paranota. 



Paranotal swellings absent from 2d segment, weak on 3d segment, 

 somewhat stronger on succeeding segments. Paranota of 2d segment 

 and all succeeding midbody segments broadly rounded. Caudo- 

 lateral corners of posterior segments, including 17th and 18th, broadly 

 rounded. 



Sternum of 3d pair of legs with usual processes; sternum of 4th legs 

 with pair of processes; sternum of 5th legs sometimes with pair of weak 

 processes, sometimes without; sternum of 6th legs usually without 

 processes, occasionally with a pair of very weak ones. 



Coxal armature usually moderate, sometimes very weak. 



Male gonopods of medium size (about 1.86 mm. in telopodite arc 

 length and 1.8 mm. in arc width); curved gradually ventromesiad, 

 then abruptly dorsocephalad, then abruptly laterad; a tooth on caudal 

 side of telopodite just proximal to first abrupt bend; part of post- 

 cingular portion of telopodite distal to first abrupt bend much slimmer 

 than pai't proximal to bend; cingulum located at point of initial mesial 

 curvature near base of telopodite; precingular portion of telopodite 

 much shorter than postcingular portion. Prefemoral spine very weak, 

 sometimes absent. 



Color: Dark brown above; light (probably yellow) on paianota 

 except on cephalomesial corners; a large light median spot on caudal 

 margin of all tergites including collum ; coUum with a large light median 

 spot on cephalic margin; underparts straw-colored. 



