570 MR. G. A. BOULEI^GER — ADDITIOXS TO THE [May 15, 



observations on this point even in the non-pregnant adult female. 

 There is certainly no swelling of the vulva and perinfeum such as 

 occurs in the Baboon, and I have never noticed any discharge. 

 As I have already said, the Rhesus often suffers from some 

 inflammatory condition of the large intestine causing a discharge 

 of bloody mucus from the rectum, and this may have been mistaken 

 in some cases for menstrual blood*. 



6. Additions to the Herpetology of British East Africa. 

 By a. A. BouLENGEK, F.R.S., F.Z.S. 



[Received May 10, 1906.] 



(Text-figures 96-98.) 



Seven years ago I described and figured in these Proceedings f a 

 species of the genus Zacerta, belonging to the grovip of L. muralis, 

 discovered by Mr. F. J. Jackson in the Mau Ravine, Uganda. 

 This was a very unexpected discovery, considering the range of 

 the genus ; it is now paralleled by Mr. Degen's find, also in 

 Uganda, of a Lizard of the genus Algiroides, the known distribu- 

 tion of which was believed to be restricted to Sardinia, Corsica, the 

 East Coast of the Adriatic, and Greece. The collection made in 

 Uganda by Mr. Degen, which has been productive of so many 

 new fishes, has also yielded a new Snake and a new Toad, which 

 are here described. 



Algiroides apricanus, sp. n. (Text-fig. 96.) 



Head strongly depressed ; snout rather long, obtusely pointed. 

 Rostral not entering the nostril ; a single postnasal ; four or five 

 upper labials anterior to the subocular ; a series of granules 

 between the supraoculai^s and the supraciliaries ; occipital shorter 

 and a little broader than the interparietal ; temple covered with 

 uniform small keeled scales. No gular fold; 19 scales in a line 

 between the third chin-shields and the collar, those in front of 

 the latter enlarged and faintly keeled ; collar with serrated edge, 

 composed of 6 plates. Dorsal scales more than twice as large as 

 the laterals, diagonally keeled, obtusely pointed, the strong keels 

 converging towards the median line ; 24 scales across the middle 

 of the body; two or three lateral scales correspond to the length of 



* [Evacuation of apparently blood-stained faeces appears to be not an uncommon 

 phenomenon in Monkeys. Dr. Mary Gordon, P.Z.S., tells me she has noticed it in 

 a. Y)i2M^ {Cercopitliecus diana) hrvA. a. Mozambique Vervet (C. pygert/thrus), hut is 

 not sure that the staining was caused by blood. I have myself been completelj' 

 deceived by the faeces of a Chimpanzee, which, while in perfect health, passed a stool 

 suggestive of serious intestinal ulceration. I subsequentlj^ learnt that she had been 

 fed the previous day upon blood oranges ! In any case, whether the staining is 

 sometimes due to blood, as Dr. Steegmann says, and sometimes not, it appears to 

 occur in Monkeys in other respects perfectly healthy and passing normal faeces. This 

 conclusion may be useful to those who keep Monkeys, since it shows that the 

 occurrence of such staining does not necessarily indicate ti'eatment for colitis or 

 enteritis.— R. I. P.] f 1899, p. 96, pi. x. 



