CHAMBERLIN: MYBIOPODA OF THE AUSTRALIAN REGION. L23 



ous than on others. Gonopods of male unsegmented beyond second 

 joint. Telopodite long, widening distad, thin and plate-like, at end 

 with two short processes of which the ectal is typically broad and 

 distally blunt, the mesa! narrow and distally acute. 

 Genotype. — S. manni, sp. now 



346. SOLOMONOSOMA MANNI, sp. now 



Type. -M. C. Z. 4,992. Paratypes.— M. C. Z. 4,993, 5,008. 

 Solomons: Auki (W. M. Mann). 



Typically black above with posterior portion of keels yellow to reddish or 

 reddish yellow, sometimes the lighter yellow obscure. Antennae black to 

 deep brown. Legs fulvous with middle joints darker and of vaguely weakly 

 reddish cast. Head paler across labral border and just above antennal socket 

 on each side. 



Vertigial sulcus sharply impressed to a little above level of upper margins 

 of antennal sockets. Antennae slender, joints long except first and last; 

 third joint a little longest, the fourth, fifth, and sixth subequal. 



Tergites from third caudad with a median longitudinal sulcus, from fourth 

 on with a transverse furrow which covers only middle region of plate and is 

 often very shallow and sometimes vague. Behind the transverse sulcus 

 commonly a number of longitudinal sulci on each side paralleling the median 

 one. Anal tergite broad, distally mesally indented, the ventral surface con- 

 cave, caudal region or cauda depressed below level of anterior region. 



Legs very long. 



In gonopods of male the telopodite strongly clavately widening distad, the 

 mesal edge of the main plate toward distal end broadly extended mesad and 

 bent up dorsad, the mesal part thin and translucent, the distomesad corner 

 subrectangular. The mesal distal process weakly doubly curving, abruptly 

 more slender and curved at tip. The ectal process broadly expanding distad, 

 distal edge a little convex, extending at mesodistal corner into a spine-like 

 lobe which bends somewhat ventrad and has commonly a minute tooth on its 

 caudal edge near middle; the outer lobe broader and more rounded. 



Length (male type), 29 mm.; width, 3 mm. 



347. SOLOMONOSOMA DIDYMUS, sp. nOV. 



Type.— M. C. Z. 5,003. Paratypes — M. C. Z. 5,004. Solo- 

 mons: Wainoni Bay (AY. M. Mann). 



In coloration very like S. nigrum, having a similarly black or brown- 

 ish black coloration of dorsum and sides, with a large dull reddish 

 middorsal spot on each tergite; but the posterior part of each keel is 



