220 E. II. Chandler — Unrecorded Erratics. 



reptiles and amphibians. He says: "I fancy it will be safest to 

 keep as Amphibia the forms Tvith two condyles, large presphenoid 

 (vomer), and pterygoids wide apart." These characters, taken in 

 connection with the condition of the carpus and tarsus, the sacral 

 ribs, and the degree of ossification of the limb bones, will serve to 

 keep the two classes separate. 



In pursuance of the above scheme the following classification has 

 been outlined for the Amphibia as we now know them, and will be 

 used until further knowledge teaches otherwise. This scheme was 

 read before the recent meeting of the Kansas Academy of Science. 



Class AMPHIBIA, Linne, 1758. Devonian to Recent. 



Subclass I. Euamphibia, nom. nov. Carboniferous to Recent. 



Order 1. Branchiosauria, Lydekker, 1889. Carboniferous and Permian. 

 Order 2. Apoda, Oppel, 1811 (Gymnophiona, Miiller, 1832). ? Permian 



and Eecent. 

 Order 3. Caudata, Dumeril, 1806. (? Permian) Jurassic to Recent. 

 Suborder 1. Proteida (Mudpuppies), Cope, 1868. Eocene to Recent. 

 Suborder 2. Meautes (Sirens), Linne, 1766. (In appendix to 12th ed. 



Syst. Nat.) 

 Suborder 3. Mutabilia (Salamanders), Merrera, 1820. 

 Order 4. Salientia, Laurenti, 1768. Eocene (? Jurassic, Eohatrachus) to 

 Recent. ^ 



Suborder 1. Aglossa, "Wiegmann, 1832. 

 Suborder 2. Lmguata, Gravenhorst, 1845. 

 Suborder 3. Costata, Lataste, 1879. 

 Subclass II. Holospond3-li, Schwarz, 1908. Carboniferous. 



Order 1. Microsauria, Da-wson, 1863. Carboniferous to Permian. 

 Order 2. Aistopoda, Miall, 1874. Carboniferous to ? Permian. 

 Order 3.' Diplocaulia, nom. nov. 

 Subclass III. Stegocepbala, Cope, 1868. Carboniferous to Upper Triassic, 

 ? Jurassic. 

 Order 1. Temnospondylia, Zittel, 1887. Carboniferous to Permian. 

 Order 2. Stereospondylia, Zittel, 1887. Carboniferous to Upper Triassic, 

 ■'■ ? Jurassic. 



I am indebted to Dr. Leonhard Stejneger, of the United States 

 National Museum, for the classification of the recent Amphibia. 



Yll. — On' some TJneecoeded EEE-iTic Boulders in South 



Pembeokeshike. 



By R. H. Chandler. 



DUllINGr the, past year several igneous erratic boulders have been 

 noticed on the cliffs of South Pembrokeshire by Mr. A. L. Leach 

 and myself, in situations where no such erratics were previously 

 known, so that a record of the larger ones seems advisable ; five of 

 them being dealt with in the following paper. At Mewsford Point, 

 near St. Govan's Head, there is a well-rounded boulder measuring 

 4 ft. 1 in. X 2 ft. 6 in. and about 2ft. 6 in. high, weighing approximately 

 32 cwt., and visible from some distance because its outline and dark 

 colour differ markedly from the surrounding crags of Carboniferous 

 Limestone. It appears to be the southernmost igneous erratic boulder 

 in Pembrokeshire, and hence is of more than usual interest. 



1 The position of this new order is doubtful. It may belong to Subclass III. It 

 is established for the genus BijjJocaulns, Cope, from the Permian of Texas. 



i 



