1892.] 



BODY-CAVITY IN SNAKES. 



481 



[Lizards, Crocodiles, and Birds.] 

 (5) " On the Subdivision of the Body-cavity in Lizards, Crocodiles, 

 and Birds."' Proc. Zool. Soc. London, 1889, pp. 452-474, 

 plates xlvi.-xlix. 



I quote this paper here because, as explained, the present 

 one is really a continuation of it, and I shall have occasion to 

 refer back to it. Some other references will be found in it. 



§ III. List of Snakes examined ^. 



Suborder I. OPOTERODONTA. 



Fam. CATODONTA. 

 Fam. EPANODONTA. 



Suborder II. COLUBRIFORMIA. 



Fam. UE0PELTIDJ5. 

 Fam. TORTRICIDtE. 

 Fam. XENOPELTID^E. 

 Pam. PYTHONIDtE. ErycintE. 

 Boinje. 



PYTHONINiE. 



Fam. CALAMAEID.E. 

 Fam. COLUBRIDiE. Coronellin^e. 

 Natricin^. 



colubrin^. 



J'yphlops lumbricalis . . . 



Rhinophis blythii 



Gylindrophis riifa 



Xenopeltis unicolor 



Eryx johnii 



Enygrus carinatus 



Boa constrictor 



Fython mo hirus 



Aspidura trachyprocta . 



Liophis meremii 



Tropidonotus natrix 



Heterodon d'orbignii ... 

 Elaphis quadrilineatus . 

 Composoma melanurum. 

 Zamenis gemone')isis . . . 

 Pituophis catenifer . . . 



' I take this opportunity to make the following corrections and additions : — 



P. 464, 1. 14, for " Vitelline " read Allantoic. 



P. 473, 1. 14, for "mesentej'y and ligaments" read mesentery and median 

 ligaments. 



Fig. 7, erase v.om, v.om'. 



Fig. 33, for 4 read 3. 



Fig. 46, the space on the right side of the figure into which the spleen and 

 oesophagus project should be marked 2' and similarly 



Fig. 47, for 2 and 3 read 2' and 3 (on the left side of the figure). 



With regard to figs. 42 and 43 see below, § VII. (iii.) note. 



Further, since the description of the Crocodile was written, I have, thanks 

 to the generosity of Mr. S. F. Clark, of Williams College, Mass., been able to 

 cut sections of a considerably younger stage (viz. a 35-days Alligator). This, 

 while confirming the other opinions expressed in the previous paper, makes it 

 clear that there is originally a " Foramen of Winslow " in the normal position, 

 so that from the 7th to the 18th lines inclusive on page 470 of (5) should be 

 struck out. 



Lastly, since p. 465 of that paper was written, I have found that certain 

 Scincoid Lizards are as to the relations of their right lungs and liver intermediate 

 between the Teiidie and other Lizards ; while Acontias meleagr is agrees with most 

 Lizards, Angiiis fragilis, Chalcides onionecton, and apparently Acontias mono- 

 dactyla have their " pulmohepatic recess " not extending into the region of the 

 lungs. So that a section through the lungs resembles fig. B on that page, and 

 one behind the lungs shows the right lobe of the liver attached as in fig. A. 



^ For explanation see § V. 



