124 bulletin: museum of comparative zoology. 



also of the same obscure reddish color. Antennae and legs black. 

 Articles of antennae shorter, as in S. nigrum, than in manni and maius. 

 Furrows of tergites obscure. Keels as usual. Anal tergite broad, 

 corners a little rounded, posterior margin a little concave. Most 

 clearly differentiated by the structure of the male gonopods. The 

 outer distal process is shorter than in S. nigrum, less ribbon-shaped, 

 with the cuneate distal expansion much larger, bent so as to be con- 

 cave on the ventral side. Most distal process abruptly narrowed and 

 curved over distal portion as in manni. On ectal edge of tibial divi- 

 sion near middle of its length a triangular expansion with lower edge 

 long and oblique and upper one short. Such an ectal angulation is 

 also indicated in nigrum but it is much smaller. A prominent mesal 

 expansion as usual. 



Length (male type), 30 mm. 



348. SoLOMONOSOMA MAius, sp. nov. 



Type.— M. C. Z. 4,999. Solomons: Malaita, Ruma. Paratypes. 

 — M. C. Z. 5,000, 5,002. Solomons : Malaita, Niauva (W. M. Mann). 



A larger species than the others. Resembling the genotype in its 

 long yellow legs and light, yellow keels, but the dorsum is paler brown. 

 Antennae and head a deeper brown. 



Keels thick and smooth as usual and set off by distinct furrows. 

 Tergites with longitudinal as well as transverse sulci distinct. x\nal 

 tergite broad, caudal edge truncate or weakly widely incurved, more 

 as in the genotype than in S. nigrum. 



Mesal edge of distal end of tarsal division of telopodite produced 

 dorsomesad in a large, thin, subquadrate lobe. Outer process differ- 

 ing conspicuously from that of the other species in widening to an 

 angle on its dorsal edge and then curving about mesad and again 

 a little proximad in a wide hook which narrows distad. 



Length (male type), 40 mm. 



349. SOLOMONOSOMA NIGRUM sp. nOV, 



Type.— M. C. Z. 4,998. Paratypes.— M. C. Z. 4,998. Solo- 

 mons: Auki (W. M. Mann). 



Black above and laterally, differing from S. manni in not having the keels 

 hght colored; a large middorsal dull reddish spot on each somite. Venter 

 brown. Antennae and legs black. 



