1 1 . LAGTINORTITNCnTTR. 23 



2. Lagenorhynchus acutus *. 



(Whitc-sidccl Dolphin.) 



Delphimis acutus, Gray, Spic. Znol. i. p. 2 (1828). 

 Delphinus esclirichtii, Srhhf/el, Ahh. Gchiefe Zool. Sfc. p. 23 a841). 

 Delphinus leucupleurus, Rasrh, Nova Spec. Deacript. ^'c. (1843). 

 Leucopleurus arcticus, Gray, Si/nopsk Whales and Dolphins, p. 7 

 (1868). 



a. Articulated skeleton. (360 a.) 



Greenland. Purchased. 



Skull figured in Zool. Ercb. & Terr. pi. xii ■. 



3. Lagenorhynchus electra. 



Lagenorhynchus electra, Gray, Zool. Ereh. 8f Terr. p. 35 (1846). 

 Electra obtusa, Gray, Syn. WJiales ami Dolphins, p. 7 (1868). 



a. Skull. (359 a.) 



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



The two following specimens probably belong to this species. 



h. 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. (475a_66. 2.5. 1.) 



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



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

 figs. 1-5). 



4. Lagenorhynchus fitzroyi. 



Delphinus fitzroyi, Waterhouse, Zool. ' Beagle,^ Mamm. p. 25, pi. x. 



(looy). 



a. Rostrum and anterior portion of lower jaw with all 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 clanculus. 

 Lagenorhynchus clanculus, Gray, P. Z. S. 1849, p. 2. 



a. Skull. (935 «— 49. 5. 25. 3.) 



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



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

 pp. 491-3. 



