418 REPORT ON ZOOLOGY, MDCCCXL1V. 



p. 471), but also to two other Reports, by Heule (ib. Bd. i. 

 Bericht ii. cl. Leistungen in der Histologie v. Heule, p. 4), 

 and Bischoff (Miiller's Arcliiv, 1844; Bericht liber die 

 Fortschritte der Physiologie im Jahre 1843, v. BischofF, p. 

 69), who have simultaneously expressed themselves in the 

 same indignant terms with respect to these writings of 

 Klencke. 



Hager (Die fremclen Korper im Menscheu, 1844) has 

 adduced many older and more recent instances in which 

 Eutozoa, the larvae of insects, and other pseudo-parasites 

 have been met with in unusual situations in the human body. 

 We are indebted to Tiedemann (Von lebenden Wurmern und 

 Insekten in den Geruchsorganen des Menschen, 1844) for a 

 very valuable collection of all the cases in which Round 

 Worms, Scolopendra3, Earwigs, the larvae, of Flies, Leeches, 

 &c., have escaped from the nose. To a French translation 

 of Nordrnann's memoir on Entozoa in the Eye of Mammalia. 

 Rayer has added several older and more recent observations, 

 (Archives de Medecine comparee. Paris, Nos. 2 and 3, 1843. 

 Sur les Helminthes dans Trail des animaux superieurs.) 



HELMINTHES GORDIACEI. 



The Reporter (Entomologische Zeitung. Jahrg. 1843, p. 77) 

 is convinced, by communications in letters from Creplin and 

 Diesing, that the Gord'ms aquaticus is really parasitic in the 

 abdominal cavity of the most various insects. He has also 

 described (ib. p. 79) a Mermis albicans, which was found in 

 a pool of water near Erlangen. The females of this long 

 worm contained simple ova, and the genital aperture was 

 situated at a considerable distance from the posterior extre- 

 mity of the body ; the males presented at the caudal 

 extremity a double, horny penis, which is entirely wanting 

 in Gord'ms. The Reporter is also induced to refer the 

 FUaria acuminata to Mermis. The list of insects infested 

 by Gordius and Mermis as parasites, published by him, has 

 been augmented with many new instances. 



