. The annals and magazine of natural history : zoology, botany, and geology . pelvic bones areformed much as in Aulopus^ with a pair of posterior processeswhich are slender in Saurida, short and laminar in vertebral column is as in Aulopus, except that there areno upturned centra at the base of the caudal fin ; 53 to 62vertebrae in Synodus and Saurida. In addition to the two genera just named this family in-cludes Baihysaurus and llarpodon; the latter is a highlyspecialized type, in which the maxillary is no longer recog-nizable as a separate element; the skeleton is very feeblyoss
. The annals and magazine of natural history : zoology, botany, and geology . pelvic bones areformed much as in Aulopus^ with a pair of posterior processeswhich are slender in Saurida, short and laminar in vertebral column is as in Aulopus, except that there areno upturned centra at the base of the caudal fin ; 53 to 62vertebrae in Synodus and Saurida. In addition to the two genera just named this family in-cludes Baihysaurus and llarpodon; the latter is a highlyspecialized type, in which the maxillary is no longer recog-nizable as a separate element; the skeleton is very feeblyossified and transverse processes are not developed on thevertebrai, the ribs being sessile; apparently tliere is noorbitosphenoid and the frontals and alisphenoids form acomplete double interorbital septum, a condition approachedin Saurida. The pectoral arch differs from that of Synodusin the longer and narrower supracleithrum, the almost mem-branous coracoids, and the absence of the laminar expansionof the lowest radial, in the latter character agreeing withSaurida. Fig. A. B. Pectoral arch of A, Bathypterois longifilis; B, Synodus as in figure 3. Family 3. Sudid». Chlorophthalmus, usually placed near Aidopiis, differs fromthat genus in many ways. The dorsal fin is short and thepelvic fins are close together; the maxillary bears a singlesupramaxillary ; the vomerine teeth form two separatepatches; the skeleton is weakly ossified, there is no orbito-sphenoid, the parasphenoid is slender, the lateral ethmoidameet in the middle line, the anterior attachment of the palatine 126 Mr. C T. Regan on the Anatomy and to the vomer is ligamentous, the temporal fossae are apparentlynot roofed, the upper limbs of the post-temporal are attachedby ligament to the epiotics, but nearly meet above tlie supra-occipital, and the pelvic bones are simple triangular have had no skeleton, and I have ascertained these charactersfrom examination of a spirit-specimen. The
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Keywords: ., bookcentury1800, bookdec, booksubjectnaturalhistory, bookyear1838
