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



posteriorly by two lamellar leaping organs and an intermediate leaf-like lobe." Keference is 

 made in a note to the researches of Erichson (Entomogvaphia) which would displace the use 

 of the terms thorax and abdomen as applied by carcinological writers. In the specific 

 description, he says that the superior antennce " consist of a peduncular portion which is 

 composed of three hirsute articulations, the last of which supports two rami of very unequal 

 development," remarking in a note that "this condition of the superior antennse is not 

 described by Philippi." He mentions the name dedntdor, which he had given to his 

 Irish specimens, before becoming acquainted with Philippi's account, in case after-investigation 

 should show the Irish form to be in fact distinct from the Adriatic species. In describing 

 the appendages of the terminal segment of the abdomen, he says " the appendages of the 

 third pair constitute a sort of tail, by which the body is prolonged backwards ; they are 

 borne upon the posterior extremity of the segment, and consist each of a very large leaf-like 

 lamina supported on a short basal joint ; " adding in a note that, " it is these basal joints of 

 the two caudal appendages which Philippi seems to have mistaken for a fifth abdominal 

 segment, with the anus in a fissure on the back." 



He considers that " the families of the Amphipodous Crustacea may be analytically arranged as 

 follows :— 



Family. 



"Fourth and fifth abdominal .segments confluent. Abdominal appendages of the 



fourth and fifth pair very different in form (heteromorphous). . . CheluridjE. 



" Fourth and fifth abdominal seg- f 



ments distinct. Abdominal | Mouth concealed by the maxillary feet. . Gammarid^. 

 appendages of the fourth and ■{ 



fifth pair nearly similar in | Mouth not concealed by the maxillary feet. HyperiDjE." 

 form (isomorphous). \_ 



L"^*?. Brandt, Johann Fpjedrich, born 1802 (Hagen). 



Ueber den gleichzeitig mit der Ausrottung der Pflegemutter bewerkstelligteu 

 geschicbtlich nacbweisbaren Untergang einer kleinen parasitischen Krebsart 

 (Cyamus ? oder richtiger vielleicht Sirenoeyamus ? Rhytinse) und eines Eingeweidc- 

 wurmes der Jetztwelt, von J. F. Brandt. (Ln le 20 mars 1846). Bulletin de la 

 classe physico-niathematique de TAcademie imperiale des sciences de St.-Peters- 

 bourg. Tome cinquieme. St.-Petersbourg, 1847. 



This paper, though earlier published, was originally read after the more full account published in 

 the Mem. de lAc. imp. de St. Petersbourg, 1849. See note under that date. Brandt thinks 

 that the want of the breathing appendages, which could scarcely have escaped so accurate 

 an observer as Steller, had they been as strikingly developed as in Cyamus, points to an 

 affinity between " Sirenon/anms?" and Leptninera. 



1847. Frey, Heinrich, and Leuckart, Rudolph. 



Beitriige zur Kenntniss wirbelloser Thiere mit besonderer Beriicksicbtigung der 

 Fauna des norddeutschen Meeres. Von Dr. Heinrich Frey and Dr. Rudolph 

 Leuckart. Mit zwei Kupfertafeln. Braunschweig, 1847. 



Pages 100-109 are " Ueber den Ban der Caprellen." The authors object to Kr0yer's proposal to 

 make the order of Liemodipoda a family among the Amphipoda. They refer to Xaturh. 



