Zoological Society. 49 
Lower jaw thick, blunt, and rather produced beyond the upper in 
> ° 34 
front. Skull rather compressed behind. Teeth ,., rather slender, 
cylindrical, conical at the top. The frontal ridge half the distance 
between the notch and the convexity of the condyles ; condyles large, 
rather oblique ; foramen magnum rather wider than high. 
in. lin. 
en etn Gmtare hse oe ini oa ay bo GO 
(TEE cout Sane A I lela AAD 
Of teeth-lime: spk scdete ss ss 6 10 
INE, FOWEE JOWE <'o0- 2. a ininel els ws LE 11 
WWikele atratety, 5 625.6 sco. s ours. 013 Pak sent Or 
HINGREE A eS Pe AS Siete te od 6 5 
at middle of beak ........ 2 10 
- of middle of intermaxillar.. 1 3 
— at condyles above........ 3 3 
Height of each condyle .......... lys3 
Sailarony Hote 2. sl sty oo. OC TO 
LAGENORHYNCHUS CLANCULUS. 
Skull wide and rather high behind; beak flat, outline wide at the base, 
rapidly tapering and acute in front, but rather convex on the sides ; 
sides slightly rounded, the hinder edge near the notch only slightly 
turned up and rounded ; lower jaw high behind ; triangle extending to 
near the middle of the beak. Teeth = small, cylindrical, curved, ra- 
ther acute at the top ; the lower front one very small. Intermaxillaries 
broad, hard. 
ie a thes 
| VORA ee 14 6 
BABs EER ca Bahri tcncs «at ates Fie 
aS E bs) oleae, ch on orcs diate 
—— of teeth-lme ............ 6 6 
GE NOMEN IEW «oko 'ocere appt 5s | ean 
of symphysis of lower jaw.. 1 4 
DCO ESTs) an aaa a ape 4. 
LC Tr oT RES Capea en SPUR AE ee IN” MH 
— at middle of beak ........ ee | 
— of intermaxillar in middle ie 4 
of condyles above ........ 210 
Hab. Pacific. 
Very peculiar for the elongation and reflexion of the beak before 
- the notch, and the regular beveling of the sides of the beak. 
LAGENORHYNCHUS THICOLEA. 
Skull rather narrow behind ; beak elongate, almost one-fifth longer 
than the length of the head, rather dilated and concave above behind, 
with the side edges in front of the notch elongated, keeled, and turned 
up ; the middle of the beak flat, with flat shelving sides, the shelving 
part being broader, and forming a slight keel in front. Intermaxillaries 
flat, gradually tapering. Triangle to the middle of the beak concave on 
Ann. & Mag. N. Hist. Ser. 2. Vol. v. 4 
