3i2 DISCOVERY REPORTS 



Remarks. This species was recorded by Liitken from the Southern Right Whale, 

 and by Stebbing from the tail region of the same species of whale. Stebbing also 

 recorded it from the Humpback. 



Paracyamus boopis (Liitk.). 



Liitken, 1873, p. 262, pi. iii, fig. 6 and p. 264, pi. iii, fig. 7 (pari fiats). 



Sars, 1895, p. 669, pi. ccxl. 



Stebbing, 1910 a, p. 473. 



Pesta, 1928 (Ann. Nat. Mus. Wien, xlii), pp. 79, 82, fig. 1 h, i. 



Occurrence: 1. Whale no. 355. South Georgia. Humpback. 1 $, 2 $? (all immat.). 



2. Whale no. 373. South Georgia. Humpback. 6 gg, 1 ovig. ?. 



3. Whale no. 387. South Georgia. Humpback. 2 (JcJ, 2 ovig. $$, 3 immat. $?, 2 juv. 



4. South Shetlands. Humpback. 3 <J(J, 3 $$ (1 ovig.), several juv. 



5. Whale no. 918. Saldanha Bay. Humpback. 10 $<$, 7 $$ (none quite mature), 

 2 juv. 



6. Whale no. 1125. Saldanha Bay. Humpback. 6 S<$, 4 ?? (1 with embryos), 

 several juv. 



7. Whale no. D 3. Durban. Humpback. 11 <$$, 1 immat. ?, 1 juv. 



8. Whale no. D 21. Durban. Sperm Whale. 2 $$, 3 ovig. $$, 1 $ with embryos. 



Remarks. The only difference between this species and erraticus lies in the ventral 

 tubercles on segments 5-7. In the ? there is only one pair on each of the segments, and 

 in the 6* only one pair on each of segments 6 and 7 (the blunt processes on segment 5 are 

 present in the $, as in erraticus and other species). It does not appear to reach so large 

 a size as erraticus; the body also tends to be more slender, and the branchiae not so 

 elongate. C. pacificus Liitk. is certainly synonymous. 



This species has been recorded from the Humpback, and a var. physeteris from the 

 Cachalot. Liitken (1893) says that the latter record is based on the statement of a whaler. 

 It is therefore interesting to find a sample in the present collection taken from the 

 Sperm Whale. 



Paracyamus gracilis (R. de Vauz.) (Fig. 173). 



R. de Vauzeme, 1834, p. 259, pi. viii, figs. 24, 25. 

 Liitken, 1873, p. 278, pi. iv, fig. 10. 

 Stebbing, 1910 a, p. 473. 



Occurrence: Whale no. 503. South Georgia. Southern Right Whale. 1 o, 6 juv. 



Description. General outline of peraeon in dorsal view nearly parallel-sided. Head 

 plus segment 1 triangular, with only a slight lateral groove marking the line of fusion. 

 Segment 2 with antero-lateral angle rounded, postero-lateral angle quadrate. Segments 

 3 and 4 with a shallow notch on lateral margins. Segments 5 and 6 with a notch on 

 lateral margin near anterior corner, slightly concave farther posteriorly. Segment 7 

 subtriangular, slightly broader than long, postero-lateral margin with a notch, hind 

 margin concave. 



On ventral surface in $ a pair of blunt inwardly directed processes on segment 5 ; no 

 pointed tubercles either in <$ or ?. 



