DETERMINATION OF GENERIC TYPES, ETC. 119 



Mastophorus Diesing, 1853a, 34. Type species probably M. echiurus. 



[Not Mastopora Eichw.,1840, mollusk; MastigophoraPoey, 1832, lepidopteron. ] 

 globocaudatus Diesing, 1853a, 34. Host Geotrupes stercorarius. Only imma- 

 ture stages observed. 

 echiurus Diesing, 1853a, 34. Host Tmebrio molttor. Only immature stages 



observed. Probably type, because its host is so common. 

 medinensis Linnaeus, 1758a, 647. Renamed dracunculus Bremser. 



1758: Gordius. 1759: Dracunculus (type). 1773: Dracunculus (type). 1773: 



Vena (type). 1790: Filaria. 1792: Nervus (type). 1795: Furia vena, 

 mediterranea de Man, 1877, 108-109, pi. 9, figs. 14, a-c. 



1877: Spira. 1888: Arseolaimus. 

 megalochila Diesing, 1851a, 278-279. 



1851: Filaria. [1851: Tricheilostomi (type).] [1861: Schizocheilonema (type) .] 



1861: IHcheilonema (type). 

 megastoma Rudolphi, 1819a, 22-23, 236. 



1819: Spiroptera. 1849: Spirura. 1866: Filaria. 

 megatyphlon Rudolphi, 1819a, 47, 285-286. 



1819: Ascaris. 1845: Ozolaimus (type). 1866: Qxyuris. 

 melancholicus de Man, 1880, 35. 



1880: Cylindrolaimm. 

 Meloidogyne Greldi ?, "1887, 67-68;" 1889a, 28. Feb., 266; 1892a, 68. M. exigua, 



Goeldi?, "1887;" 1889a, 28. Feb., 266; 1892a, 68, only species, hence type. 

 Menopetatonema Linstow, 1878, 74. Misprint for Monopetalonema. 

 Merinthoidea Kraemer, 1853a. See Merinthoidum. 



Merinthoidum Krsemer, 1853a, 291-293. Proposed as an artificial collective group and 



as such it has no type species. Originally contained only one species, 



Merinthoidum mucronatum chironomi plumosi Kraemer, 1853a, 291-293. pi. 11, 



figs. 9-10, fig. 15 in text. 



Mermis Dujardin, 1842a, 117-119; 1842e, 129, pi. 6. M. nigrescent, only species, hence 



type. 



Metastrongylus Molin, 1861, 437, 588-594. Type species M. paradoxus. 

 longevaginatus (Diesing, 1851) Molin, 1861, 589-590, pi. 8, fig. 7. 

 paradoxus (Mehlis, 1831) Molin, 1861, 591. 

 Isevis (Dujardin, 1845) Molin, 1861, 592. 

 costellatus (Dujardin, 1845) Molin, 1861, 592. 

 polygyrus (Dujardin, 1845) Molin, 1861, 592-593. 

 depressus (Dujardin, 1845) Molin, 1861, 593. 

 minutus (Dujardin, 1845) Molin, 1861, 593-594. 

 gracilis (Leuckart, 1842) Molin, 1861, 594. 



Molin figures only the first species, but as this is probably identical with the 

 second, and as the second is the most common, best known, and most easily 

 obtained of any of the eight species in question, M. paradoxus is herewith 

 designated type of Metastrongylus. 

 micans Nordmann, 1840, 664. 



1840: Phanoglene (? type). 

 micans M. Schultze in Cams, 1857a, pi. 8, fig. 1. 



1857: Diplogaster (type). 

 Microlaimus de Man, 1880, 15-16. M. globiceps de Man, 1880, 15-16, only species, hence 



type. 

 [Not Microlamia H. W. Bates, 1874, coleopteron (Zool. Rec. (1874), 1876, 



v. 11, 327).] 



microphthalmus de Man, 1893, 86-89, pi. 5, fig. 4. 

 1.893: Arseolaimus (Arasolaimoides) [type]. 



