OCR Text |
Show 1875.] MR. G. E. DOBSON ON THE GENUS SCOTOPHILUS. 373 inwards towards its fellow of the opposite side; first upper premolar minute, in the inner angle between the canine and the second premolar ; first lower premolar not crushed in between the canine and second premolar. SCOTOZOUS DORMERI, n. Sp. Crown of the head scarcely raised above the face-line ; glands between the nostrils and eyes well developed, but not causing a depression between them on the muzzle ; nostrils opening sublaterally, the space between divided in the centre by a narrow vertical band passing downwards to the lip as in Vesperugo pipistrellus: ears shorter than the head, triangular, with rounded tips; upper third of outer margin of the ear faintly concave, then gradually convex, again slightly concave opposite the base of the tragus, and terminating in a rounded lobe below the eye, on a level with the angle of the mouth. Tragus with a small triangular lobe near the base of the outer margin, outer and inner margins parallel as far as the upper third of the outer margin, where the outer margin slopes suddenly upwards and inwards, meeting the inner margin at an angle. Thumb armed with a strongly curved claw; postcalcaneal lobe distinct, triangular; tip of tail projecting; wings from the base of the claws ; foot rather large, first toe nearly equal to the others in length. Fur above brown, the extreme tips ashy; beneath darker brown, the terminal third of the hairs white. A single large and acutely pointed unicuspidate incisor on each side above, directed forwards and inwards ; this tooth almost touches the canine by its base; but its summit is closer to its fellow of the opposite side, owing to its direction inwards; from the outer side of its cingulum a very small spur projects. Second upper premolar large, equal to three fourths the canine in vertical extent, and placed close to it; in the small triangular space inside, between it and the canine, a minute premolar may be seen with the aid of a lens, not visible from without. Posterior upper molar equal to half the antepenultimate molar. Lower incisors crowded ; middle incisors slightly larger than the others, all distinctly trifid: lower canines without a cusp from inner margin of cingulum. First lower premolar shorter than the second premolar, but in transverse diameter rather greater, nearer by its summit to the second premolar than to the canine. Length: head and body 1"*5, tail 1"*15, head 0"*6, ear 0"*45, tragus 0"*18, forearm 1"*25, thumb 0"*25, second finger 1"*85, fourth finger 1"*4, tibia 0"*4, foot and claws 0"*28. |