that are nearly equal, are very small and hidden by the short plumose setae on the upper 

 border; the apex of the anterior tooth is a little farther distant from the tip of the rostrum 

 as from the apex of the penultimate tooth. Lower margin convex, only slightly emarginate 

 near the tip; except near the base the lower margin is fringed with long feathered setae, that 

 reach far beyond the tip. 



Antennular flagella 14 mm. long, just as long as the carapace with the rostrum 

 together; in the full-grown specimens, collected by the Siboga Expedition between the islands 

 of Wowoni and Buton and that were 50 resp. 54 mm. long, these flagella were as long as 

 the carapace without the rostrum. 



The 3 rd abdominal tergum appears indistinctly angular on the posterior half, while the 

 anterior is regularly rounded, but it cannot be said to be carinated. The external maxillipeds 

 reach by a little more than the dactylus beyond the antennal scale. The peraeopods of the 

 i st pair reach to the far end of the antennal peduncle, those of the 2 nd to the distal extremity 

 of the antennal scale, while the legs of the 5 th pair project by the dactylus and half the pro- 

 podus beyond that extremity. 



The young male from Madura-strait is 29 mm. long. Rostrum 1 + 7-dentate, less broad 

 in a lateral view than in the preceding specimen. The 3 rd abdominal tergum appears distinctly 

 carinated, except quite anteriorly, the carina, however, is obtuse and less prominent than on 

 the 4 th somite. The external maxillipeds reach only by one-third of their ultimate joint beyond 

 the antennal scale. The peraeopods of the i st pair extend as far as the antennal peduncle, 

 those of the 2 nd reach by the fingers, the very long legs of the 3 rd pair by the chela and 

 half the carpus, the legs of the 4 th pair by the dactylus and one-third of the propodus, those 

 of the 5 th , finally, by the dactylus and almost the whole propodus beyond the antennal scale. 



The young male from Stat. 7 agrees with the preceding one. 



The two from the coast of Obi Major are 16 or 17 mm. long and the four from 

 Stat. 166 are nearly of the same size. 



4. Penaeopsis intermedia (Kishinouye) var. anchista de Man. PI. I, fig. 3 — $d. 



Metapeneus ensis'i A. Alcock, Catal. of the Indian Decapod Crustacea. Part III Macrura. 



Fase. I. The Prawns of the Peneus Group. Calcutta 1906, p. 24? 

 Penaeus intermedius K. Kishinouye, Journal of the Fisheries Bureau, Vol. VIII, N" 1. Tokyo 



1900, p. 21. 

 Penaeopsis intermedia (Kish.) var. anchista, J. G. de Man, in : Zoolog. Mededeelingen, uitgeg. 



vanwege 's Rijks Mus. v. Nat. Hist. te Leiden. 1920. Deel V, AA. 3, p. 103. 



1 male and 1 female from the Kei-islands, Wertheim Expedition. 



2 females from Ternate. 



1 very young specimen collected by Mr. RUTTEN at Balikpapan, East Borneo. 



Stat. 323. (Siboga Exp.). February 24/25 1900. Sangkapura-roads, Bawean-island. 12 m. Bot- 



tom mud. 1 young female. 

 1 young male collected July 191 5 by Dr. P. BUITENDIJK at Pulu Weh. 



Penaeopsis intermedia (Kish.) was established upon two apparently adult females, long 

 12 cm., from the province of Tosa, Japan. Our specimens from the Indian Archipelago now 

 fully agree with the description of this species and with the figure, in which, however, the 



