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Show 1876.] MR. ALSTON ON NEW SPECIES OF HESPEROMYS. 755 must be regarded as a variety. Both specimens belong to the collection of Dr. Prevost. CARDIUM ORNATUM, sp. nov. (Plate LXXV. fig. 2.) C testa oblique orbiculari, mediocriter inflata, radiatim costata, latere antico rotundato, postico superne leviter compresso, ob-tusissime angulato; costis 28, elevatis, angulatis, conspicue nodosis, maculis rubris paucis pulcherrime ornatis, ad latera oblique sulcatis. Long. 19, lat. 17 mill. Hab. Hongkong. Shell obliquely orbicular, moderately inflated, radiately ribbed, front side rounded, posterior slightly compressed, and very obtusely angled at the upper part; ribs twenty-eight in number, elevated, angulated, conspicuously noduled, and ornamented with distant red spots ; sides of the ribs obliquely grooved. Several specimens of this pretty little species were sent me last year from Hongkong by Mr. Cuthill, the type having passed into the collection of Dr. Prevost. EXPLANATION OF PLATE LXXV. Fig. 1 a and b. Lima zealandica and var., p. 754. 2. Cardium ornatum, p. 755. 3. Conus pauluccice, p. 752. 4. superscriptus, p. 753. 5. baccatus, p. 753. 6. reflectus, p. 754. 2. On two new Species of Hesperomys. By EDWARD R. ALSTON, F.L.S., F.Z.S., &c [Received November 1, 1876.] In examining the Central-American specimens of Muridse in the British Museum I have found two well-marked species which appear to be undescribed. Of these, the first was indicated, though not characterized, by the late Dr. Gray, and was exhibited to this Society, along with some other Guatemalan mammals, in June 1843. I have thought it best to retain his name, and would therefore call it:- HESPEROMYS TEGUINA, sp. n. Mus teguina, Gray, P. Z. S. 1843, p. 79 (sine descr.). Ears moderate, rounded, sparingly clad with fine blackish hairs. Tail short, not longer than the body alone, very minutely annulated and rather thickly covered with fine short dark-brown hairs. Fur close and velvety. Colour of all the upper parts warm dark reddish brown, the fur lead-coloured, with red-brown tips, the longer hairs on the back black ; chin, throat, and breast like the upper parts, but more greyish, the rufous tips of the hairs being shorter; belly shaded |
