168 Mi^cellaneoufi. 



postoculars, both the fourth and fifth labials touching the eye, and 

 nineteen instead of seventeen longitudinal rows of scales. Giin- 

 ther's species lives in West Africa, and received its specific name 

 from the fact that the specimen described had two Siluroid fishes in 

 its digestive tube ; M. DoUo found in his the hind limbs of an 

 Anurous Batrachian. 



The second new form is referred to the Elapida), and constitutes 

 a new genus allied to Naja, but distinguished from all known 

 Elapidae by the following characters : — 



" A series of three or four simple teeth behind the poison-fangs. 

 Rostral moderate. Two nasals, in contact with the preocular. Two 

 postoculars. Neck not dilatable. Scales not arranged obliquely, 

 smooth, in twenty-one longitudinal series. Anal single. Urostega 

 double." 



The genus is named Boulenjej'ina, in honour of Mr. G. A. 

 Boulenger, and the species B. Sfonnsl, after its discoverer. — Bull, 

 du Mus. Roy. (VHist. Nat. de Belgique, tome iv. pp. 151-157. 



On Spongilla glomerata, Noll. By Dr. F. VEjDovsxf . 



The author notes that the freshwater sponge lately described by 

 Noll under the name of SpongiU'i (/lomerata (Zool. Anz. Nov. 1886, 

 p. 682) is identical with Sponi/lUa fragilis, Leidy, the synonymy of 

 which species is as follows : — 



Spo}i(/illa fraqilis, Leidv (1851), Yejdovskv (1884), Wierzejski (1885, 



1886), F. Petr (1885; 1886), Potts (1SS5). 

 Spongilla Lordii, Bowerbank (1863), Wierzejski (1884). 

 Spojigilla contecia, Noll (1870), Retzer (1883). 

 Spongilla sibirica, Dybowski (1878-84) *. 



The author further remarks upon the presence of a layer of air- 

 chambers in the envelopes of the gemmules of freshwater sponges, 

 euch as S. fragilis, Trochospongilla erinaceus, Euspongilla lacustris, 

 Epliydatia MUlleri, &c., and gives the following list of the known 

 European species of the group : — 



Fam. SpongillidSB. b- Subfam. Me yenin^, Cart. 



c. Subfam. Spongillin^, Cart. H- Genus Trochospongilla, 



I. Genus Spongilla. 4. Trochospongilla erinaceus, Ehr. 



a. Subgen. Euspo7igilla, Vejd. "T- ««""« ^^Ya^^^^' ^'"^' 



1. Euspongilla lacustris, Aid. ^ Ephydatia Miilleri, Lieh. 



2. Euspongilla rhenana, Retzer. ^ Ephydatia fluviatilis, Aid. 



j3. Subgen. Spongilla. 



7. Ephydatia bohemica, Petr. 



IV. Genus Cabtebius, Potts. 

 3. Spongilla fragilis, Leidy. g_ Carterius Stephanowii, Petr. 



Zoologischer Anzdger, no. 239, Dec. 6, 1836, p. 713. 



* The notion that Spongilla sibirica, Dyb., is identicul with S. fragilis, 

 Leidy, was first put forward by Mr. H. J. (Jarter. 



t This genus is represented in the American fauua by Trochospoiujdla 

 Leidyi. 



