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broader interspace, like also the two spines between the legs of the 2°"^. The rostrum that 

 reaches to the end of the antennular peduncle, bears only 6 teeth in addition to the epigastric 

 tooth, the branchiostegal spine appears as long as in Alcocic's fig. 14.Ó (1. c.) and there is 

 no tracé of the sinuous groove between the hepatic spine and the posterior border of the 

 carapace. The arcuate stridulating organ runs closer to the lower margin of the carapace than 

 in the typical species and is formed by 18 or 20 ridges that are shorter, finer and more 

 closely situated near one another than in the preceding specimens. The carina on the 3''* 

 abdominal tergum is broader, flattened above, not grooved at all, resembling that of 

 Pe?i. barbattts (de Haan) = akayebi (Rathb.). The telson is a trifle shorter than the inner uropod. 

 The external maxillipeds that do not yet reach to the apex of the antennal scales, are somewhat 

 less slender. The carpus and the merus of the legs of the i^' pair are nearly of the same 

 length, while in the preceding specimens the carpus is decidedly longer than the merus. Except 

 as regards the broader and flattened carina on the 3"^ abdominal tergum, this specimen evidently 

 fully agrees with the description and the figures of the typical species. The two other specimens 

 are very young and show the same characters. 



The male from Stat. 163 is very young, but apparently agrees with that from the 

 preceding Station; the young male from Stat. 179 shows again the characters of the specimens 

 captured at Stat. 33, this is also the case with the female from Stat. 205. 



The male from Saleyer is of medium size, óo mm. long. It resembles the specimens from 

 Stat. 33, but the rostrum, that just reaches beyond the 2"*^ antennular article, is i + 8-toothed. 



The eleven specimens taken near the Jedan-Islands, apparently in the same haul, are of 

 medium size or quite young. Eight of them show the same characters as the specimens from 

 the west coast of Salawatti. The largest of these eight specimens is a female long 67 mm., 

 that bears a Bopyrid in the right half of its carapace. The rostrum reaches to the end of the 

 antennular peduncle and bears only 6 teeth besides the epigastric tooth. The other smaller 

 specimens show also 6 or 5 teeth on the rostrum. One of the three remaining specimens is a 

 female long 53 mm., in which the rostrum is i + 8-toothed. The anterior plate of the thelycum 

 is less broad than in the other females from this Station, but the anterior margin is prominent 

 in the middle like in the females from Stat. 64, and the transverse bar in the middle of the 

 thelycum resembles that of the larger female from Stat. 2. The sinuous groove between the 

 hepatic spine and the posterior margin of the branchiostegite is nearly indistinct. Another 

 smaller female presents the same characters, but in the third somewhat larger specimen the 

 anterior plate is still narrower, and the lateral walls of the transverse bar in the middle are 

 very short, divergent. 



The adult female from Stat. 296, 78 mm. long, almost accords, as regards the thelycum, 

 with Alcock's fig. lA^d. but the anterior plate is somewhat less broad. The rostrum is 1 + 7- 

 toothed and reaches to the end of the antennular peduncle. Branchiostegal spine long. Sinuous 

 groove between the hepatic spine and the posterior margin of the carapace hardly traceable. 

 The groove on the carina of the 3"^'^ abdominal tergum is shallow. 



The ten specimens from Stat. 3 1 3 are quite young and present nothing noteworthy. 



Remarks. Penaeopsis stridnlans is most closely allied to a species that inhabits 



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