18/4.] DR. MTJRIE ON FREGILUPUS VARIUS. 481 



rounded. The rostrum is sharply upturned, and terminally widely 

 forked ; the costal processes are both broad and high. Within, the 

 sternum is shallow and widish. 



There is a large inflected interclavicle ; and whilst the narrowly U- 

 shaped furcular limbs throughout are slender, their upper ends are 

 outspread. The shaft of the coracoid is rounded, long, and not thick, 

 its lower sternal end broadening gradually with an outer, thinned, sharp 

 margin; its scapular extremity with a moderate expansion. The 

 scapula is sabre-shaped and of medium width. 



On each side there are only seven vertebral ribs extant in the 

 specimen ; but, from appearances, I surmise that there has been an 

 additional riblet anteriorly. The five front ribs have recurrent pro- 

 cesses ; in the hindermost two there are none. The last rib of all 

 has a delicate spinal end ; the first does not reach the sternum ; neither 

 does the last, though it is fastened to the sixth. Thus there are only 

 five osseous sternal ribs which articulate with the sterno-costal pro- 

 cess, and as many which expand at their upper vertebral angles. 

 In form the thoracic cavity is high behind, the reverse in front, and 

 from side narrow and subcompressed. 



Pelvis and Spine. — The pelvis is narrow in front, moderately broad 

 in the middle (postiliac region), and wide at the lower (pubo-ischial) 

 processes. The prse- and postacetabular lengths are subequal, 

 advantage, if any, being in favour of the latter. The anterior iliac 

 blades are considerably deflected ; but the rear of the pelvis dorsally 

 is full and convexly depressed. The descending ischial plates have a 

 rather perpendicular set, and at the ischiatic foramen the postilium 

 overhangs considerably. The tenuous pubic rods broaden terminally, 

 and are in apposition with and extend further than the tuberosity of 

 the ischium. The renal excavations are each deeply scooped, and 

 exhibit only a trace of transverse partition. 



In the neck there are 11 vertebrae, or 12 if that possibly car- 

 rying a riblet be included ; in the back 7 or 8 with that anchy- 

 losed to the sacrum ; of sacral 7 or 8 ; and of free caudals 8. 

 Expressed in formula : C. 1 1 (12?), DL. 7 (8?), S. 7 (8?), Cd. 8,= 

 34 (35 ?). Neural spines obtain in 2nd, 3rd, 4th, and 5th cervicals. 

 1st to 4th show single median heemal spines, absent in those that 

 follow, but reappearing in the 11th. The intermediate cervicals 

 possess inflected plates, which defend the carotid artery. Recurrent 

 spicules commence on the 3rd, and increase in length and strength 

 almost to the hindmost neck-vertebrae. The 1st and 2nd dorsals 

 have barely appreciable neurapophyses ; those behind have them well 

 developed. Only three or four of the foremost dorsals have inferior 

 mesial spines. Sacrum with a solid columnar body ; ragged-edged 

 perforations mark intertransverse vertebral divisions. The six ante- 

 rior free caudals are tolerably uniform, the penultimate and pygostyle 

 are more adnate, though not anchylosed. 



Cranio-lingual formation. — The bill, i. e. premaxillary region to the 

 rear segment or orbitocranium, is nearly as 4 is to 3 in length. The 

 skull generally, both from above and in profile, has a long, narrow 

 wedge-form. The brain-area is only very moderately high, being 



