ENTOZOA. 191 



Sp. Oxyuris vermicularis, Ascaris vermicularis L., BREMSER Ueb. leb. Wiirm. 

 Tab. i. figs. 6 12; Der Mastwurm, Springwurm ; it lives in the large 

 intestine of man (especially in children), and causes a very troublesome 

 itching and occasionally various nervous symptoms. The male was first 

 discovered by BREMSEK in 1815, in a specimen sent to him by SCEMMERRING, 

 (see S. TH. v. SCEMMERRING'S Leben u. VerJcehr mit seinen Zeitgenossen von 

 E. WAGNER. Leipsig, 1844. I. s. 340) previously the much larger female 

 alone was known. 



Tricocephalus GOEZE. Body filiform, elongate anteriorly capil- 

 lary, passing suddenly into the more ample posterior part. Male 

 genital organ a simple spiculum, long, vaginate. 



Sp. Tricocephalus dispar EUD., BREMSER Ueb. leb. Wurmer. Tab. I. figs, i 5 ; 

 this species has frequently been met with in the intestinal canal of man, 

 especially in the ccecum, first by MORGAGNI, afterwards by E(EDERER, &c., 

 in bodies of persons dying of typhus (EoKiTANSKY Handb. d. path. Anat.) ; 

 frequently in cholera-subjects in Italy by DELLE CHIAJE (Isis, 1843, 

 P- 557). 

 Trichosoma RUD. 



Comp. EUD. Entozoor. Synops. p. 13, DUJARDIN Ann. des Sc. not. T.Q 

 Se"rie, xx. 1843, Zoologie, p. 332, pi. 14. 



Genera : T/iominx, Eucoleus, Calodium DUJARD. 



Filaria MUELL. Body very long, filiform, subequal. Mouth 

 orbicular. Male genital organ a long spiculum with a contorted 

 accessory part. 



Sp. Filaria medinensis, Gordius medinensis L., BREMSER Ueb. leb. Wurm. 

 Tab. iv. fig. i. Dracunculus, Vena medinensis, the hair-worm, guinea-worm, 

 le dragonneau, &c. This worm lives in man under the skin in the cellular 

 tissue, especially in the legs, and may attain a length of ten feet ; male 

 individuals of this species do not seem to have been observed hitherto. 

 Sometimes this worm occasions severe pain ; it is met with in hot countries 

 especially of the old world, less frequently in America, except in the 

 island of Curaao, where it is endemic, although the worm-sickness does 

 not always prevail there with the same intensity. See the still interesting 

 notices of B. HUSSEM in the Vehr. van het' Zeeuwsch. Genootsch. IT. 1771, 

 443 464. The thread- worm is viviparous, and the young differ in form 

 from the mother. See JACOBSON and DE BLAINVILLE in Ann. du Museum, 

 nouvelle Serie in. pp. 80 85. 



Liorhynchus RUD. Body round. Head without valve, with 

 tubule of mouth emissile, smooth. (Doubtful genus.) 



Sp. Liorhynchus- denticidatus EUD., BREMS. Icon. Helm. Tab. v. figs. 19 22 ; 

 in the stomach of Murcena anguilla. 



Cheiracantkus DIES. Body annulate, posteriorly attenuate, an- 

 teriorly armed with palmate or dentate spinules, which in the middle 



