11. lAGENOEHTlfCHTra. 23 



2. Lagenorhynchns acutus *. 

 (White-sided Dolphin.) 

 Uelphinus acutus, Gh-ay, Spic. Zool i. p. 2 (1828). 

 JJelphmus eschrichtii, Schlegel, Abh. Gehiete Zool. ^c. p. 23 (1841). 

 iJelphmus leucopleurus, Rasch, Nova Spec. Bescript. ^c. (1843). 

 0868^^"^ Mcticus, Gray, Synopds Whales and Dalphim, p. 7 



a. Articulated skeleton. (360 a.) 



Greenland. Purchased. 



Skull figured in Zool. Ereb. & Terr. pi. xu= 



3. Lagenorhynchus electra. 



Lagenorhynchus eleetra, Gray, Zool. Ereh. ^ Terr. p. 36 (1846). 

 Electra obtusa, Gray, Syn. Whales and Dolphins, p. 7 (1868). 



«• Skull- (859 a.) 



Type. Figured in Zool. Ereb. & Terr. pi. xiii. 



The two following specimens probably belong to this species. 



6. Skull without teeth. (358 a.) 



Type of Gray's L. asia, Zool. Ereb. & Terr. p. 35, pi. xiv., 

 which appears to differ from the last only in its smaller size. 



c. Skull. (4750—66. 2. 5. 1.) 



Madras. Sir Walter ElUot, K.C.S.I. [P.]. 



Type of Owen's Delphinus fusiformis (Tr. Z. S. vi. p. 22, pi. vii. 

 figs. 1-5). 



4. Lageuorhyuchus fitzroyi. 



Delphinus fitzroyi, Waterhcmse, Zool. ' Beagh^ Mamm. p. 25, pi. x. 

 (1839). 



a. Eostrum and anterior portion of lower jaw with aU the teeth, 

 and the dried skin upon it ; female. 

 Bay of St. Joseph, coast of Patagonia, lat. 42° 30', April. 



Charles Darwin, Esq. [P.]. 

 Type of species. 



" This porpoise, which was a female, was harpooned from the 

 'Beagle' out of several, in a large troop, which were sporting 

 round the ship" (C. Darwin). 



5. Lagenorhynchus claucnlns. 



Lagenorhynchus clanoulus, Cfray, P. Z. S. 1849, p. 2. 



a. Skull. (935 a— 49. 5. 25. 3.) 



Pacific Ocean. Dr. Dickie's Collection. Purchased, 1849. 



* On the synonymy of this species, see Flower, Proc. Zool. See. 1883, 

 pp. 491-3. 



