Sprent J F
J Helminthol. 1979 Mar;53(1):91-116. doi: 10.1017/s0022149x00005782.
The genus Multicaecum Baylis 1923, sensu Hartwich 1957, was found to be heterogeneous, comprising species which are released to two distinct genera, namely Multicaecum Bavlis, 1923 and Brevimulticaecum. The latter name is derived from the subgenus Brevinulticaecum Mozgovoy, in Skrjabin, Shikhobalova, and Mozgovoy, 1951 by raising it to generic rank and emending the definition. Multicaecum contains a single species, agile Wedl, 1861 occurring in Crocodylus spp. in Africa, India and Australia, and is characterized by smooth rounded lips, each with a dentigerous ridge comprising small sharp denticles. The excretory pore is level with the nerve ring or behind it, and the ventricular appendices are long and slender. The species gangeticum Maplestone 1930 and quadrata Linstow 1904 are excluded from Multicaecum and regarded as species inquirendae incertae sedis. Brevimulticaecum contains five species occurring in the caimans and the alligator of the New World: baylisi Travassors, 1933 (type species; acuticauda Schuurmans-Stekhoven, 1937 is placed in synonomy under baylisi); stekhoveni Baylis, 1947; tenuicolle Rudolphi, 1819; and two new species. Brevimulticaecum spp. are characterized by flat lips with alate margins and notches, without dentigerous ridges, excretory pore in front of or at nerve ring and the ventriculus with short appendices. The significance of this proposal is discussed in relation to the other genera of ascaridoid nematodes in crocodilians.
1923年的多盲肠属（Multicaecum Baylis），按照1957年哈特里奇（Hartwich）的定义，被发现具有异质性，其包含的物种被划分到两个不同的属，即1923年的多盲肠属（Multicaecum Bavlis）和短多盲肠属（Brevimulticaecum）。后者的名称源自1951年斯克里亚宾（Skrjabin）、希霍巴洛娃（Shikhobalova）和莫兹戈沃伊（Mozgovoy）著作中的短多盲肠亚属（Brevimulticaecum Mozgovoy），通过将其提升到属级并修订定义而来。多盲肠属包含一个物种，即1861年韦德尔（Wedl）命名的敏捷多盲肠（agile），见于非洲、印度和澳大利亚的尼罗鳄属（Crocodylus spp.）物种，其特征为唇平滑圆润，每个唇都有一个含齿嵴，由小而尖锐的齿组成。排泄孔与神经环平齐或在其后方，心室附属物长而细。1930年马普尔斯通（Maplestone）命名的恒河多盲肠（gangeticum）物种和1904年林斯托（Linstow）命名的方形多盲肠（quadrata）物种被排除在多盲肠属之外，被视为分类地位不确定的待研究物种。短多盲肠属包含五个物种，见于新大陆的凯门鳄和短吻鳄：1933年特拉瓦索斯（Travassors）命名的贝利西短多盲肠（baylisi，模式种；1937年舒尔曼斯 - 斯特霍芬（Schuurmans-Stekhoven）命名的尖尾短多盲肠（acuticauda）被置于贝利西短多盲肠的同物异名之下）；1947年贝利斯（Baylis）命名的斯特霍韦尼短多盲肠（stekhoveni）；1819年鲁道夫（Rudolphi）命名的细颈短多盲肠（tenuicolle）；以及两个新物种。短多盲肠属物种的特征为唇扁平，边缘有翼状结构和缺口，无含齿嵴，排泄孔在神经环前方或与神经环平齐，心室有短附属物。本文结合鳄类蛔虫线虫的其他属讨论了这一分类建议的意义。
