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Show 116 MR. R. H. BURNE ON [Feb. 19, to each of the toes; in Macalister's specimen to the four outer toes only. The following muscles were present and agreed with Macalister's description :-Tensor vaginas femoris (text-fig. 16, t.v.f). Gluteus maximus (text-fig. 16, gl.mx.). Agitator cauehe (text-fig. 16, ag.ccl.). Gluteus medius + minimus (text-fig. 16, gl.m.). Piriformis (text-fig. 16, py.). Quadratus femoris (text-fig. 17, q.f.) Semimembranosxis (text-figs. 16 & 17, sm.). Gracilis (text-fig. 17, gr.). Pectintus (text-fig. 17, pt.). Vastus externus (text-fig. 16, v.e.). Vastus interims (text-fig. 17, v.i.). Psoas parvus (text-fig. 17, p.p.). Heo-psoas (text-fig. 17, Up.). Adductor primus (text-fig. 17, acid. i). Popditeus (text-fig. 17, pop.). Tibialis posticus (text-fig. 17, t.p.). Extensor hallucis longus. Flexor prof und/us (text-fig. 17, ftp.). In this review of the muscles, it will be noticed that in several particulars this specimen approaches Dasypus more nearly than those dissected by Macalister and Hyrtl. One may take as instances :-The extensive origin of part 2 of the latissimus dorsi. The twofold nature of the splenius capitis. The want of a clavicular origin to the pectoralis major. The absence of a direct insertion of the plantaris to the heel, and lastly the mode of origin of the peronei-an origin, so far as I know, hitherto found only in Dasypus. JOINTS. Temporo-maxillary joint.-This is of a very feeble character with small flattened articular surfaces. It is remarkable for the absence of an interarticular fibro-cartilage. Parsons l, in his Hunterian Lectures on Mammalian joints, records three examples of temporo-maxillary joint among the lower orders of mammals without an interarticular cartilage (e. g. Omithorhynchus, Dasyurus, and Dasypus). It is interesting to find that Chlamydophorus shares this exceptional character with Dasypus. Shoulder-joint.-There is a stout accessory ligameut that passes, superficial to the capsule, from the coracoid process downwards and backwards to the outer surface of the head of the humerus. This ligament is noticed by Hyrtl, and can still be seen attached to his preparation of the skeleton (B.C. S.Osteol. Series, No. 3582), and I only mention it to draw attention to a similar ligament in Dasypus and Tatusia Qi. C 8. Physiol. Series, Nos. B 125, B 126). THE VISCERA. On the coarse anatomy of the viscera there is little to be said, for this subject has been dealt with in detail by Hyrtl, and any gaps left in his descriptions have been filled by Macalister and Watson2. I shall thus mainly confine my remarks to certain 1 Parsons : "The Joints of Mammals." Journ. Anat.& Physiol, xxxiv. p. 41. 2 Watson : "On the Male Generative Organs of Chlamydophorus truncatus, &c " Proc. Zool. Soc. 1878, p. 673. |
