Figure 2. — ScyHorhimis retifer (Garcnan) : A, Drawn from a 465-mm. female; B, drawn from a 3S0-mm. female. 

 Both specimens collected in 365-385 m. off Pensacola, Fla. The upper figure shows a specimen with seven major 

 saddles but with the addition of one intermediate saddle between the two dorsal fins. The darker reticulations 

 in the lower figure can be seen to delineate seven major saddles. 



show whether or not western Atlantic species pro- 

 duce living young. Probably both western 

 Atlantic species are ovoviviparous. No shelled 

 eggs have been found in oviducts of the many 

 adult female specimens that have been examined, 

 and no unidentified egg cases small enough to be- 

 long to Galeus have been seen. 



Claspers and clasper siphons 



Leigh-Sharpe has proposed that more considera- 

 tion be given to the structure of the claspers and 

 clasper siphons or clasper glands in taxonomie 

 studies of elasmobranchs. In a series of papers 

 published between 1920 and 1926 he described these 



Figure 3. — Egg case of a cat shark collected off Cape Ken- 

 nedy, Fla.. showing a developing embryo within its en- 

 tirely transparent and colorless case and showing the 

 characteristic method of attachment of the case. The 

 degree of transparency of the egg case, the shape, and 

 the nature of surface markings on it vary with species. 

 Transparent egg cases which may be quite free from 

 color when fresh may become brownish after storage in 

 alcohol. The embryo color pattern and the site of col- 

 lection of the egg case suggests that it is SoyliorMnus 

 tneadi. Drawn from an egg case approximately 1.4 by 

 4.0 cm. exclusive of tendrils. 



REVIEW OF WESTERN ATLANTIC CAT SHARKS 



587 



