218 bulletin: museum of comparative zoology. 



narrowly trapeziform, the sides converging moderately distad and the 

 distal end broad and straight. The anterior or coxal plate of first 

 gonopods broadly concavely excavated at distal end with mesal angle 

 rising higher than the ectal. Distal end of telopodite broadly rounded, 

 longer than coxa in the distal concavity of which it fits, its mesodistal 

 corner produced as usual, the process low, proportionately narrow, 

 and distally rounded. 



615. Plokamostrophus brachycerus (Silvestri). 



Trigoniulus brachycerus Silvestri, Ann. Mus. civ. Geneva, 1899, 39, p. 448, 

 fig. 18-20.' 



Locality. — British New Guinea: Goodenough Island.^ 



616. Plokamostrophus obscurus (Silvestri). 



Trigoniulus obscurus Silvestri, Ann. Mus. civ. Geneva, 1899, 39, p. 447, fig. 

 14-16.1 



Locality. — British New Guinea: Dilo.^ 



617. Plokamostrophus flavipes (Attems). 



Trigoniulus flavipes Attems, Abhandl. Senckenb. gesellsch., 1897, 23, p. 508, 

 pi. 24, fig. 47, 48.1 Carl, Rev. Suisse zool., 1912, 20, p. 161.^ 



Localities. — Celebes: Minahassa,^ Lokon Volcano,^ top of Suvara,^ 

 Soputan Volcano.^ 



618. Plokamostrophus venatorius (Silvestri). 

 Trigoniulus venatorius Silvestri, Term, fiiz., 1899, 22, p. 210, pi. 12, fig. 30-32.1 

 Locality. — New Guinea: Erima, Astrolabe Bay.^ 



' 619. Plokamostrophus gracilis (Silvestri). 



Trigoniulus gracilis Silvestri, Term, fliz., 1899, 22, p. 210, pi. 13, fig. 34-36.1 

 Locality. — New Guinea: Erima, Astrolabe Bay.^ 



620. Spirostrophus ambonensis (Attems). 



Trigoniulus ambonensis Attems, Semon's Forschungsreise, 1898, 5, p. 512, 

 fig. 3-5.1 Carl, Rev. Suisse zool., 1912, 20, p. 863.^ 



Localities. — Celebes: Mapane." Amboina.^ 



