50 Mr. G. A. Boulenger on new 



kinds, as I may remark in opposition to lijima. Most of 

 them are small and fusiform, but a good many are filiform, 

 and more or less rolled up together. The two kinds are found 

 together in the same cells, and both are also thrown off, 

 for which reason I cannot regard them as developmental stages. 

 As already stated, the bacilli are expelled under strong irri- 

 tation, as, for example, when the animals are placed in 

 Miiller's solution, picric acid, picro-sulphuric acid, or chromic 

 acid. In hardening them in corrosive sublimate, hot alcohol, 

 or osmic acid, only the tips of a few bacilli usually make 

 their appearance. 



The musculature consists of an external layer of ring- 

 muscles, external bundles of longitudinal muscles, and a great 

 many internal longitudinal muscular fibres, to which are added 

 dorso-ventral and transverse fibres. 



In passing, I may state here that in Bipalium diana I 

 have observed an encysted Nematode. In the unpaired limb 

 of the intestine there was far forward the radula of a Gaste- 

 ropod. I can confirm von Kennel's statements as to the 

 occurrence and the mode of opening of the vitelline glands. 



I hope in the course of the year to publish a more detailed 

 memoir, furnished with figures, upon the points here noticed, 

 and in this I shall furnish more complete statements as to the 

 histological characters of the nervous system and the sense- 

 organs, which cannot wxll be done here without figures. I 

 will also give the necessary notices of the literature and com- 

 parisons with other forms. I have lately received well-pre- 

 served material of some other Land-Planaria^,. 



V. — Descriptions of new Reptiles and Batrachians in the 

 British Museum {Natural History). — Part III, By G. A. 

 Boulenger. 



Anniella texana. 



Head less depressed, snout more rounded than in A. 

 pulchra. Nasal shield semidivided, a horizontal suture 

 extending from the nostril to the second labial ; frontal twice 

 as broad as long ; anterior supraocular nearly as broad as 

 the distance which separates it from its fellow j interparietal 

 and occipital divided (anomalously ?) by a longitudinal suture ; 

 six upper labials — first very small, below the nasal, second 

 largest and in contact with the pr£efrontal and a loreal, third 



