720 AFRICAN ]{EPTI]>ES AND BATKACHTANS — STEJMECiKK'. 



ocular leachiug' the lips, and in the very remarkable seutellatiDii of 

 the lower Jaw, tJ. hrenneri has Ave to six elongate, narrow intraia- 

 bials, none of which are in contact with those <m the other side, the 

 last one followed by two or three rows of small hexagonal scales; it 

 has, moreover, four j)airs of chin shields, two or three anterior pairs in 

 contact. In our present species, on the other hand, there are only two 

 or three anterior inlValal>ials, the first pair in. contact on the median 

 line behind the mental. Thus there are but three pairs of chin shields, 

 only the anterior pair being in contact, while the last ])air form the edge 

 of the lip. At the ])osterior end of the last chin shield there is a long 

 and narrow infralabial, while in the corresponding place in E. hrenneri 

 there are two rows of small scales. 



In addition to these differences the type si)ecimen, the only one 

 collected, shows several divergencies from the only specimen of E. 

 hrenneri which we have for comparison, viz, the frontoparietal is longer 

 in proportion to its width and is (h^eply grooved mesially; the two 

 parietals form a straight line behind, while in E. hrenneri they form a 

 concave angle; gular scales as well as those fornung the edge of the 

 collar apparently smaller in the former than in the latter; there is no 

 elongate shield along the outer edge of the parietals. There are probably 

 still other difterences between the two specimens, which, however, are 

 somewhat damaged. 



In the arrangement of the mandibular shields the specimen upon 

 .which I have ventured to base a new species certainly seems somewhat 

 abnormal, and it is possible that the characters adduced from it nuiy 

 prove not to be diagnosti<'. Nevertheless, the two additional ventral 

 rows and the admission of the subocular to the \\\> ai)])ear of sufficient 

 importance to justify the separation. 



I have named the species in honor of Mr. Chanler's traveling com- 

 ]ianion, Lieut, von Hoehuel, of the lmi)erial Austrian Navy, who has 

 also done jiart of the collecting. 



Mabuya sechelleiisis (Dim. A 15ihk.). 



AN'ith 10 s}»ccimens from the Seychelles before me, 10 <>f which were 

 collected by Dr. Abbott, I am unable to recognize M. irrifihtii (Cat. Liz. 

 Br. Mus., Ill, 1887, p, 102, i)l. viii) as a valid species. 



I-'rom the a])pended table it is evident that the number of scales 

 round the body varies from 34 to 42, entirely irrespective of theshai)e 

 of the frontonasal or its relation to the rostral. As to the comparative 

 width and length of the frontonasal, I have only to remark that the 

 difference either way is usually so triHing. and the cases of equality be- 

 tween the two dimensions so frequent, that one is often doubtful as to 

 the location of the specimens. In two cases only. A'iz, two very large 

 specimens, is the frontonasal completely excluded fiom the rostral by 

 the supranasals being in contact with each other; in most of the speci- 

 mens the anterior angle of the frontonasal just touches the rostral, and 



