XXVIII.—A new Aracanid fish from South Africa
XXVIII.—A new Aracanid fish from South Africa
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XXVIII.—来自南非的一种新的蜘蛛鱼
DOI：
10.1080/00222934908526725
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发表时间：
1949
期刊：
影响因子：
--
通讯作者：
J. Smith
中科院分区：
文献类型：
--
作者：
J. Smith
D11，A10，P11，C1]，上、中脊之间斜交的两个钢板，中脊与骨盆间的斜板。深度2.4，头部长度：身体到尾部的长度为3.7。眼2.4，口鼻1，3，眶间(骨脊)L。在头部长度上。背部在皮托拉上方的宽度。L，腹部同级3“，身长t，足底1~2 mm。甲壳呈六角形，下宽于上。甲壳相当坚硬，外侧和背部主要由粗糙的边缘脊的鳞片组成，而腹面和脸颊上有一个突出的，Rm的骨结节，由许多坚固的螺柱组成。发泄。被一块裸露的区域紧紧地围着。甲壳名义上开口于背侧，并从排气口前向外，背侧和肛门后方没有，：背侧的一条孔缘。在整个臀部上，尾柄的柄是神经的，分开的，但紧密相连的一组L‘u，~e(i板，实际上在背面和腹面向后延伸甲壳，几乎延伸到尾端)。这个甲片与甲壳本身的区别是明显不那么坚硬，并且在每个板上没有脊，每个板上都有一个合成的粗糙的带刺的结节，很像胸板上的那些。背部，就在扭转肌的后面。是一种桥联单位，呈大而不规则的熔融板状，横向为：L马。最大活体，纵向分三个系列。这个单位的前缘是艺术。与甲壳的后背侧翼缘侧生，尽管它们之间的皮肤可以清楚地辨认出来。(一个可比但孤立的结构模糊地显示在Kenl的图：C中。Rocag)ros(1，cu，lea.喂，S，胡尔。图恩，1782年，田中著，《日本之鱼》。1912年，第一卷。Vii，p]。XXXI，虽然它。在说明中未提及。)在这个单元的后面是五个关节岛，前面是一对4)2板块，接下来是2个3板块，4吨。H 2个钢板，最后1个孤立结节。TIM前路钢板在中央结节周围有一个狭窄的低边缘，但这减少了23*“
D 11, A 10, P 11, C 1], Two plates obliquely between upper and median ridges, tom'between median and pelvic~'idges. Depth 2.4, length of head 3.7 in length of body to caudal base. Eye 2.4, snout 1, 3, interorbital (bony ridge) l.? in length of head. Width of back above peetora. l 4.0, of belly at same level 3" I in length of body t, oc~ mdal base. Carapace six-angled, wider below than above.(~ arapace quite rigid, formed laterally and dorsally mainly of rough marginally ridged scutes, while ventrMly and on the cheeks each seute bears a eent, rM bony tubercle, composed of numerous fi~ sed studs. Vent. narrowly sm'rounded by a naked area. Carapace nominally open fi'om origin of dorsal, and from before the vent, p (~ steriorly, but behind the dorsal and anal there is no,: lear demarcation of a fi'ee edge. Over the whole eircuml> renee of the ani, erior]) art of the caudal peduncle are mnnerous, separate, but closely articulating groups of l'u,~ e (I plates, which virtually extend the carapace posteriorly on the dorsal and ventral surfaces, almost to the caudal ba~ e. This armature is distinct from t. he carapace proper in being markedly less rigid, and in the absence of ridges on the individual plates, each of which bears a composite rough studded tubercle much like those on the plates of the chest. Dorsally, immediately behind the, torsal. is a bridging unit in the form of a large irregularly,~ val i~ land of fused tnbercular plates, with transversely: L ma. ximmn of live, and longitudinally in three series. The anterior margins of this unit art. ieulate laterally with lhe posterior dorsal flanges of the carapace, though the~ aked skin may clearly be discerned between them.(A comparable but isolated structure shows obscurely in the figm: c of Kenl. rocag) ros (1, cu, lea. tu, s Houl. tuyn, 1782, by Tanaka, Fishes of Japan. 1912, vol. vii, p]. xxxi, though it. is not mentioned in the description.) Behind this~ tnter-or unit are five series of articulating islands, the anterior pair of 4-)-2 plates, next 2 eaeh of 3 plates, the 4t. h of 2 plates, and the last a single isolated tubercle. Tim anterior plates in this series have a narrow low margin about the central tubercle, but this diminishes 23*"