CORONULA 257 



ig.viii. 26. Saldanha Bay, South Africa. From a Blue whale, ?. 25-0511(1. No. 968. One young 

 specimen. 



20. viii. 26. Saldanha Bay, South Africa. From a Fin whale, cJ. 14-1 m. No. 973. One specimen 

 on tail. 



24. viii. 26. Saldanha Bay, South Africa. From a Fin whale, (J. 15-5 m. No. 1000. Two smaller 

 specimens embedded in the skin. (Plate I, fig. 8.) 



5. ix. 26. Saldanha Bay, South Africa. From a Blue whale, <J. 13-35 ^- No. 1064. One small 

 specimen from the flank, embedded in the skin. (Plate I, fig. 6.) 



5. ix. 26. Saldanha Bay, South Africa. From a Blue whale, ?. 21-3 m. No. 1065. One large 

 specimen embedded in the skin. 



7. ix. 26. Saldanha Bay, South Africa. From a Blue whale, ?. 25-47 ^- ^o- 1071. Two small 

 specimens from the tip of the flipper. (Plate I, fig. 5.) 



25.1.27. South Georgia. From a Blue whale, ?. 25-7 m. No. 1425. One specimen and marks of 

 a large one from tail flukes. 



One specimen from the skin of a whale (no number) from Saldanha Bay. (Plate I, fig. 7.) 



Distribution. This species is probably cosmopolitan. Hitherto it has been taken from 

 the Arctic and Antarctic seas, the Northern and Southern Atlantic and Pacific Oceans. 

 As the species is attached to whales it has been found in many localities, chiefly where 

 there are whale fisheries. 



Supplementary Description. The species is in my opinion rather uncertain. This 

 question has been closely discussed by me (1926). I stated about this species, p. 15: 

 " Es liegt nahe anzunehmen, dass die weniger stark abgeplatteten C. regmae, C. diadema 

 sind, die nur eine andere Wachstumsweise angenommen haben. Sie sollten folglich 

 verschiedene Variationen derselben Art darstellen. Es ist gegenwartig nicht moglich 

 dieses zu entscheiden, wie man auch die Ursache dieser Erscheinung auff'assen mag." 

 This rather rich material has not sufficed to clear up the question altogether. Some of the 

 fully grown specimens are typically C. reginae (those from Saldanha Bay, 24. viii. 26, 

 Plate I, fig. 8), others more intermediate between C. diadema and C reginae (that from 

 Saldanha Bay, 5. ix. 26). I thus prefer as before to recognize the species C. reginae. 

 Many young examples of Coronula are represented in the Discovery material. I think 

 they must all be considered as young C. reginae. One of them (from Saldanha Bay, 

 7. ix. 26) is very young, the youngest seen I think; it has a carino-rostral diameter of 

 only 2 mm. (Plate I, fig. 5). Of the rest many sizes are represented. 



For both the species, C. diadema and C. reginae, it is given as a typical character that 

 the orifice of the body chamber is much larger than the basal opening. In C. complanata 

 (Morch) the basal opening is as large as the orifice. This character must apply rather to 

 fully grown specimens. One young specimen (Plate I, fig. 7) shows both openings of the 

 same diameter, but during further growth the comparative size of the openings is altered. 



Cornwall (1928), who has studied young specimens of both species at a whaling 

 station, says that C. reginae at first grows under the skin, which also is the case with 

 young specimens of the Discovery material. Of C. diadema he says, p. 1 1 : " They are 

 not imbedded in the skin of the whale at any stage of their growth". 



5-3 



