230 Memoir Sears Foundation for Marine Research 



Second dorsal fin: height 6.2 ; length 1 1 .7. 

 Anal fin: height 3.85 length 9.0. 

 Caudal fin: upper margin 19.4. 

 Pectoral fin: \tngth. 1 0.0. 



Distance froin snout to: ist dorsal 32.4; 2nd dorsal 62.35 upper caudal 80.65 Pec- 

 toral 20.0; pelvics 52.93 anal 65.3. 



"iilili 



Figure 40. Pseudotriakis microdon, eastern Atlantic specimen, 930 mm. long, drawn by A. Fraser-Brunner, 

 from skin preserved in alcohol in the British Museum. A Head from below. B Upper and lower teeth to 

 show mosaic arrangement. C Front and side views of upper and lower tooth, enlarged. D Dermal denticles, 

 enlarged. 



Trunk subcylindrical, its height at origin of ist dorsal about Y-, of length to origin 

 of caudal in large specimens, but a little less than Y\ in small. Body cavity notably long, 

 the distance from origin of pectoral to cloaca being V2 the length of trunk, or a little more, 

 with origin of pelvics considerably closer to tip of caudal than to snout. Dermal denticles 

 lanceolate, with i to 5 low longitudinal ridges, raised steeply from the skin on short 

 pedicels. 



Head about Vs of total length and somewhat flattened above. Snout in front of mouth 



