INVERTEBRATA, CRYPTOGAMIA, MICROSCOPY, ETC. 571 



Spirorhts, we see tliat of the deprepsions derived from the lumen of 

 the enteric tube the one which is i^laced most dorsally is the longest 

 and deepest, or, in other words, has just the same relations to the other 

 depressions as has that one in the sheep which goes to form the 

 Eustachian tube ; of the clefts between the branchial filaments the 

 longest oue is found between tbe first and second, and it appears to have 

 just the same relations as the branchial cleft in the mammal. We have 

 not space to follow out the descriptions of the relations of the nasal 

 organ and of the other clefts in Sjnrorhis, or that of the palatal portions 

 of the upper jaw and the connecting pieces of connective tissue found 

 in the oral region of the worm, but we would observe that with regard 

 to that most vexed of questions— the relations of the nervous system 

 of Annelids and Vertebrates — the observations of Dr. Lowe point to 

 the absence in the Annelid of anything homologous to the dorsal 

 medulla of the Yertebrata ; these views, though now held by various 

 morphologists, do not, as is pointed out, agree with the speculations of 

 Kowalewsky, who looks upon the whole of the supra-chordal nervous 

 system of the Yertebrata as homologous with the wbole nervous system 

 of the Annelides ; or of Semper, who identifies the ventral medulla of 

 the latter as the dorsal medulla and brain of Vertebrates ; or of Dohrn, 

 who looks upon the whole brain of the Yertebrata as homologous with 

 the cephalic ganglion of the Annelides. 



New Annelids from the Philippines.* — Professor Grube has 

 communicated to the Academy of Sciences at St. Petersburg a 

 memoir on the forms collected by Semper in his voyage ; four new 

 genera and 142 new species are described by the learned zoologist, 

 who points out that the Alciopidte, Nephthydse, Ariciadfe, and Cirratu- 

 lida are altogether unrepresented in the collection, and that the genera 

 to which the new species are assigned have, in many cases, been 

 hitherto represented by one or two species only. The value of this 

 paper, which extends to 300 pages (illustrated by 15 plates) is en 

 hanced by the diagnoses of the families under which they are grouped, 

 so that so far this essay may be regarded as a revision of some families 

 of the Annelides. 



Trichinosis in a young Hippopotamus. f — M. E. Heckel describes 

 some observations made by him upon a young hippopotamus, about 

 two years old, which died on the 10th of May last in the Zoological 

 Garden of Marseilles, having been received from Egypt about four 

 months before. The animal was in bad health all tbe time of its 

 residence at Marseilles, and its skin showed an eruption of confluent 

 boils. When removed, the skin showed several lesions in the shape 

 of deep ulcerations, which, having originated around a hair, had 

 attacked the bulb, and thus formed a canal leading generally into a 

 great purulent cavity. Smaller ulcerations led into smaller cavities, 

 bounded by a proper membrane like true cysts, and filled with creamy 

 pus. The examination of a section of the muscular tissue surrounding 



* 'Mem. Acad. Imp. Sci. St. Petersbourg,' xxv. (1878). 

 t 'Comptes Rendus,' Ixxxviii. (1879) p. 1139; 'Ann. and Mag. Nat. Hist./ 

 iv. (1879) p. 99. 



