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as i^' antennular article; flagella of the female 4,5-times as long as the body; antennal scales 

 distinctly narrowing, with the rounded apex reaching just beyond the small spine at the far 

 end of the straight outer margin. 



External maxillipeds slender, pediform, projecting in the male with their terminal joint 

 beyond the antennal scales, in the female even with two-fifths of the propodus. Pereiopods slender. 

 Of the chelate legs that strongly increase in length from the first to the third, the first that are 

 bispinose, while the following are unarmed, hardly attain the far end of the antennal peduncle, 

 while the third extend with their chelae and, in the male with one-sixth, in the female with 

 one-fifth of their slender carpus beyond the scales. The elongate fifth legs project, in the male, 

 with their dactyli and three-fourths of their propodi beyond the antennal scales. 



There are exopods on all the thoracic legs; epipods everywhere present, except on the 

 first maxillipeds and on the fifth pair of legs. The branchial formula seems to be typical 

 (confer: Alcock, Catal. Indian Deep-Sea Crust. 1901, p. 20). 



The petasma agrees with Bate's figure but the spines on the distal half of the spiniferous 

 portion are more equal in length, the posterior being little shorter than the anterior; the 

 spines on the proximal half are much longer anteriorly than in Bx\te's figure and they become 

 gradually shorter posteriorly, while in the quoted figure on the contrary they grow longer 

 backward. Similar spinules occur also on the lateral faces of the anterior spiniferous part of 

 the orgfan and are here arranged in a curved line. 



As regards the thelycum, I will observe that there is a vertical plate immediately behind 

 and contiguous to the coxae of the 4'!^ pair, that the sternum of the last thoracic somite bears 

 two small rounded tubercles separated by a groove and that the posterior wall appears like a 

 gate, the two lateral parts of which curve backward and outward behind the coxae of the 5"^ legs. 



The male from Stat. 167 is much younger, 27 mm. long, but the petasma is already 

 developed. Rostrum 7 -f i toothed. The antennular flagella are comparatively much longer 

 than in the adult male, described above, being almost twice as long as the carapace without 

 the rostrum. The rostrum of the larger female from Stat. 179 that is 48 mm. long, is 9 + i 

 toothed, the acute tip is slighdy upturned at the apex; antennular flagella barely longer than 

 the carapace without the rostrum. In the other somewhat younger female the rostrum is 8 -f i 

 toothed, flagella little longer than the carapace. 



The female from Stat. 121 is 45 mm. long; rostrum 8+ i toothed, acute tip upturned ; 

 antennular flagella still almost one and a half as long as the carapace without the rostrum. 



I am indebted to the courtesy of Professor Bedot of Geneva for having been enabled 

 to examine the single type of Philonicus cervicalis Zehntner, a female from Amboina : the 

 examination not onlj- proved that Zehntner's species is a true Solenocera^ but even that it is 

 identical with Philonicus pectinattis Sp. Bate. The words "le filament superieur (des antennes 

 internes) est filiforme" in Zehntner's description are wrong and suitable to lead astray, for 

 "filiforme" means cylindrical, whereas the upper flagellum is in reality compressed, flattened and 

 like a band, as in the most typical Solenocerae. 



General distribution: Arafura Sea, South of Papua (Spence Bate) ; Flores, Maumeri 

 (de Man); Amboina (Zehntner). 



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