564 REPORT ON ZOOLOGY, MDCCCXLIV. 



From a notice by Thompsou (Annals, xiii, p, 111) re- 

 specting this fish, we learn that it is viviparous. A speci- 

 men recently taken and placed in water, brought forth 

 about twenty young, four lines in length. 



Valenciennes, in his Ichthyology of the Canary Islands, 

 has also described an Eel, Anguilla canariensis, allied to 

 A. latirostris. 



Oplnsvrns pardalis, Val. (Cauar.) with obtuse teeth and rudimentary 

 pectoral fins ; white, with round spots. B. 30 ; D. 4, 33 ; A. 2, 96. 



PLECTOGNATHI. 



Balistes caprinus, Val. (Cauar), large scales behind the branchial aperture, 

 caudal fin deeply emargiuate, dorsal and aual fins with brown bands. 



Monacantlms filamentosus, Val. (Canar.), the second ray of the dorsal iiu 

 prolonged into a long filament, green, with large brown spots. M.gallimila, 

 (id. ib.) without the long filament, and of a uniform dusky green with pale 

 fins. 



Bellamy (Annals, xiii, p. 77) notices the capture of an Orthagoriscus molu 

 not far from Plymouth. 



SELACHII [PLAGIOSTOMI.] 



Prionodon olvelatus, Val. (Canar.), would appear to differ from P. Nil- 

 berti in the smaller teeth, the larger eyes, the broader, first dorsal fin, the 

 longer pectorals, and in the longer and narrower inferior lobe of the 

 caudal fin. 



Jobert has communicated to the Paris Academy his 

 observations on the electric organ of the Torpedo. He 

 describes the prisms as filled up and solid, without any 

 contained fluid. (Cornptes reudus, vol. xviii, 1844, p. 810 ; 

 and thence in Froriep's u. Notiz. xxx, p. 225.) 



Torpedo trepidans, Val. (Canar.) The male sexual organs and the two 

 dorsal fins much smaller than in the other species ; reddish brown with black 

 spots. 



Myllolatis episcopm, Val. (Canar.), would seem to differ from M. aquila 

 in the form of the teeth and of the tail. 



Pteroplatea canariensis, Val. (Canar.), has the tail shorter than P. 

 altivela. 



