538 MR. P. L. SCLATER ON A NEW PARROT. [ Dec. 7, 
suborder, but I venture at least to suggest that the genus may be 
regarded as the type of a new family ; and utilizing, as far as 
possible, the structural features that commonly enter into the 
diagnoses of zoologists who study living forms, it may be provisionally 
defined as follows. 
Order SELACHII. 
Suborder TEcrosPoNnDYLI. 
Family SQuALORAIID. 
Body scarcely depressed, elongate. Head produced into along flat 
rostrum, without lateral teeth. Males with a prehensile spine on the 
upper part of the snout. Dentition sharply divided at the symphysis. 
Pectoral fins with smail propterygium, free. 
EXPLANATION OF PLATE LY. 
Fig. 1. Skeleton of Squaloraja polyspondyla (male), dorsal aspect. [No. I.] 
a.v, situation of auditory openings ; 6.5, basipterygium of pelvic fin ; 
ci (a and b), cirri; cl, clasper ; cor, coracoid; d, edge of skin ; h&, 
dermal hooklets; Am, hyomandibular; 2/, iliac process; itr, inter- 
trabecular rostrum; mfp, metapterygium ; oc.c, occipital condyle ; 
p-pb, prepubic process ; pa.tr, palato-trabecular region ; pms, preaxial 
basal cartilage of pectoral fin; p7.pa, prepalatine process; pt.pa, 
postpalatine (antorbital) process; pub, pubic cartilage; 7, cartila- 
ginous fin-rays; 7.s, rostral spine ; s.sc, suprascapula; 7, dentition ; 
v, vertebral column. 
2. Skull of ditto (male), dorsal aspect. [No.IV.] Refs. as above. 
8, Skull of ditto (young female), ventral aspect. [No. III] c¢.f, carotid 
foramen (?); zv.m, investing mass ; ”, notochordal sheath. 
4, Dental plate of right mandibular ramus of ditto, twice nat. size. 
[\No. 1IT.] 
5. Rostral spine of Sgualoraja, sp., side view. [No. V.] 4, hooklets; g, 
lateral groove. : 
6. Rostral spine of Squaloraja tenuispina, dorsal view. [No. VIII.] 
7. Tail of Sgualoraja polyspondyla (young female). [No. Hl] 
8. Section of vertebra of ditto. [No. I1.] 
All the specimens are from the Lower Lias of Lyme Regis, and preserved in 
the British Museum. With the exception of fig. 4, the drawings are of the 
natural size. 
3. On an apparently new Parrot of the Genus Conurus 
living in the Society’s Gardens. By P. L. Scuatmr, 
M.A., Ph.D., F.R.S., Secretary to the Society. 
[Received October 29, 1886.] 
(Plate LVI.) 
On the 29th of April last we purchased of Mr. Cross, of Liverpool, 
an example of a Parrot of the genus Conwrus, which seems to be 
different from every other species of the genus yet described. The 
bird, which is still living in the Parrot-house, is at once distinguish- 
able from its congeners by its red throat and collar, whence I 
propose to call it 
