74 CETACEA. 
Nodus Dalei, Wagler, N. S. Amph. 34, 1830. 
Delphinorhynchus micropterus, Dumortier, Mén. Acad. pee cI 
t. 1-3, good; F. Cuv. Cetac. 114. t.9. f. 1, not good; t. 7 
skull. 
Delphimus micropterus, Cuv. Reg. An. 1. 288. 
Heterodon Dalei, Lesson, Man. Mam. 419, from Blainv. 
Aodon Dalei, Lesson, Ouvr. Buffon, 1. 155. t. 3. f. 1. <a 
Inhab. Coasts of Europe. Havre, 1825, Blainv. Ostend, 18a 
Dumortier. 
M. Dumortier found, near the middle of each side of the lowed 
jaw, an alveolus, as if for a tooth. His figure represents t 
pectoral as 3, and the dorsal as $, from the end of the noeel 
The ae are the measurements of the two deseribed speci- 
mens : 
Blainy. 2 Dum. 9 i 
ft. metres. j 
Leneth, entire « ...2 «+. 150 3°45 
so. SL 7A REE MRE sor ach ole 2:7 ~~ (nose) 0°33 
estes it EO NELOMVENS © Sa ta a a eeae 0°44 
sx), <a WO) POCIEBL ... foe take 0-91 
re of pectoral.... 1°6 0°30 
sch AOA OR es os 9°1 2°04 
OM A as 0:10 0°27 
he CREME ss sakes aay 0°49 
to the vulva. mi oF 
Grcanternee Se oh 76 2:0 
Width of pectoral ee 0-12 
ot) 5 ANE ORIMEMEE' vise ee 3°0 0°68 
Height of dorsal ...... 0-11 0:27 
Breadth of blower ..... Fon 0°10 
b. Upper and lower jaw with few or deciduous teeth. Wing 
of the maxillary bones expanded and shelving downwards 
The beak short, deflexed. Forehead convex. Head roun 
ed, without any beak. Monoceratina. . 
Diodonea, pars, Rafin. Anal. Nat. 60, 1815. 
Monoceratina, Gray, Zool. E. & T. 
* Lower jaw toothless. Upper jaw with tusk. 
4, Monopon. 
Head round and convex in front; dorsal fin none ; lower ji 
not so wide as the upper, toothless. Upper jaw im the male (¢ 
rarely in the female) with a produced spiral tusk. 
