334 Bvlletin Vanderbilt Marine Museum, Vol. VII 



each arm of the second pair, and one each, to each arm of the third 

 pair ; the ventral two points are reduced and are attached to the 

 bases of the fourth pair of arms. Within the margin of the mem- 

 brane in the median ventral area there are numerous small, rough 

 papillae for the attachment of the spermatophores. Both mem- 

 branes are very muscular, the inner one fitting closely around the 

 powerful beak. 



The tentacular arms are moderately long, slender, subcylin- 

 drical, the distal fourth supporting the club, which is slightly 

 expanded, narrowly ovate in contour, with the two lateral mar- 

 gins produced into a narrow ribbon-like protective margin ; exter- 

 nally the club bears a well defined web. The suckers are arranged 

 in four longitudinal series. There are ten to twelve small suckers 

 proximally, beyond which the suckers of the two inner rows are 

 decidedly larger, the series increasing in size distally to midway 

 the club, thence decreasing moderately for two-thirds the length 

 of the club, the suckers on the distal third of the club being small 

 and closely crowded. The large suckers each have a continuous 

 ring of eighteen narrow, deep, distally acuminate teeth, sepa- 

 rated from each other by a narrowed triangular space about equal 

 to one tooth, in reverse position ; these teeth are smallish on the 

 proximal half, those of the distal half increasing in size, so that 

 the largest teeth are nearly twice the size of the smallest ones. 

 (See fig. 19) . The pen is shown in figure 19. 



ly 



References : Loligo indica, Pfeffer, G., Cephal. des Hamburger 

 Naturh. Mus., Abh. Naturwiss. Ver. in Hamburg, 1884, Bd. 

 Vni, abth. I, p. 4, figs. 3-3a.— Hoyle, W. E., Kept. Voy. H. 

 M. S. "Challenger" Zool., 1886, vol. XVI, p. 156, text fig. 8, 

 and pi. 26. — Goodrich, E. S., Trans. Linn. Soc, London, Zool., 

 1896, ser. 2, vol. VII, p. 7, pi. 2, figs. 20-28. 



Genus: SEPIOTEUTHIS de Blainville 

 Sepioteuthis mauritiana Quoy and Gaimard 



Plate 143 



Type : The type of this species was taken by the French gov- 

 ernment's voyage of discovery of the "Astrolabe" in 1826-1829, 



