2. ξ is rather high in the constellation and close to the back of Canis Major:

Hevelius has a complicated Argo Navis construction with a head emerging on the other side of the Milky Way and looking in the opposite direction compared to the head of Canis Major. There seems to be a point of reversal between Aludra (η Canis Majoris, at the tip of the tail) and κ Puppis (slightly earlier and below Azmidiske).

We should add κ Puppis (Markab - the same name as that used for α Pegasi) to our list:

Azmidiske	07h 49m 17.66	07h 49.294m	118.4
κ	07h 38m 49.88s	07h 38.831m	115.7

Gomeisa	β Canis Minoris	2.89	08° 23′ N	07h 24m	112.6	520.6
	ρ Gemini	4.16	31° 47′ N	07h 26m	113.1	521.1
Castor	α Gemini	1.58	32° 00′ N	07h 31m	114.4	522.4
Markab	κ Puppis	4.50	26° 48′ S	07h 36m	115.7	523.7
Procyon	α Canis Minoris	0.34	05° 21′ N	07h 37m	115.9	523.9
	σ Gemini	4.23	28° 53′ N	07h 40m	116.7	524.7
Pollux	β Gemini	1.16	28° 09′ N	07h 42m	117.2	525.2
Azmidiske	ξ Puppis	3.34	04° 44′ S	07h 47m	118.4	526.4

Ga2-18 (*113)	Ga2-19	Ga2-20	Ga2-21	Ga2-22	Ga2-23
Gomeisa (112.6), ρ Gemini		Castor (114.4)	Markab (115.7), Procyon (115.9)	σ Gemini, Pollux (117.2)	Azmidiske (118.4)

Allen has the following remark as to Markab in the Pegasus Square:

"Markab - Flamsteed's Marchab - is the Arabs' word for a Saddle, Ship, or Vehicle, - anything ridden upon, - that was early applied to this star ..."