452 THE VOYAGE OF H.M.S. CHALLENGER. 



1875. WiLLEMOES SuHM, R. VON'. 



Briefe von E. v. Willemoes-Suhm an C. Th. E. v. Siebold. III. Zeitschrift fiir 

 wi.sseuschaftliche Zoologie. Fiuifuiidzwanzigster Band. T^eipzig. 1875. pp. 

 xxxvi- xxxvii. 



In this letter, dated "H.M.S. Challenger, Cap York, in September 1874," under the heading 

 "die Thiere der Oberflaohe," he says, "Die Crustaceen traten namentlich auf der Fahi't 

 von den neuen Hehriden nach Cap Y''ork massenhaft auf, docli fangen die EuphaumJen, 

 die bei den Fidschi-Inseln noch gemein waren, an, seltener zu werden. — Is^amentlich schon 

 war die Ausbeute an Stomatopoden Decapodenlarven und an Hyperiden. Von letzteren 

 waren diesmal nicht nur Iluperia, Phronima, CyllopuK, Cijstosoma, und Oxiicejjlialm 

 sondern aucli RhabJosoma vorlianden, die abenteuerliche langgestreckte Ti/jihida, die 

 wohl zu den seltensten Bewohnern der Oberflache gehtirt, da es uns bisher noch nie gelang 

 eines Exemplars derselben habhaft zu werden." 



1875. "WiLLEMOES SuHM, R. VON. 



On some Atlantic Crustacea from the ' Challenger' Expedition. (Read May 7th, 



1874). The Transactions of the Linnean Societ}' of London. Second Series.— 



Zoology. Volume I. Part the First. London, m.dccc.lxxv. Plates VI.-XIII. 



pp. 23-59. 



The part of the paper referring to the Amphipoda is on pp. 21-26, under the heading "On Cystl- 

 goma Neptunus (Thawnopj^ p)eUucida). (PL XL figs. 4-8)." Willemoes Suhni here objects 

 to supposing that the antennae in Cysiisoma represent the .second pair, an opinion which he 

 wrongly attributes to Guerin-Meneville. " Against a union of Cystisoma with the 

 Hyperids may be advanced," he says, " besides the form of the head (which is more Typhid- 

 like) and the absence of tlie second antennas in both sexes, the absence of a palpus on its 

 mandible (PI. XI. fig. 6). Tlie palpus is always present, according to Glaus, in Hyperids, 

 but is wanting in Phronimids." (But on this last point see Note on Claus, 1879.) "The 

 male," he says, " diilers by tlie absence of glands at the top of nearly all the appendages, 

 especially in the last pair of pereiopoda, which, according to this, have not the same clumsy 

 appearance as in the female. The two testes begin just behind the stomach (fig. 5, t), and 

 send vasa deferentia to the last segment of the porcion, where two simple genital openings 

 are to be seen between the last pair of legs (fig. 5, a ;/)." He further says somewhat 

 mysteriously, " probably (as in Plironima) the full-grown male is somewhat smaller than the 

 female ; it seems that Cydisoma Nejiiimiis can attain a very considerable size ; for the last 

 and largest male which we got in the trawl has a length of 103 millims." This male is the 

 largest sjiecimen of Cystisoma as yet on record, so that the probability that the female grows 

 still larger seems to be but slight. The figure 4, apparently of this specimen, is drawn 

 rather less than life-size, although the " Explanation of Plates " gives it as " Nat. size." 



1876. Bate, C. Spence. 



Report on the present state of our knowledge of the Crustacea. Part I. On 



the homologies of the dermal skeleton. [From the Report of the British Association 



for the Advancement q/" Science ybr 1875.] Plates I. & 11. pp. 41-53. 



Eeferring to his earlier report, in 1855, Mr. Spence Bate says that in the present report he is 

 desirous " to show : — that the epimera, as sectional pieces in a theoretical construction of a 



