416 A. E. Verrill — Worth American Cephalopods. 



guarded by two slender papillae; of a long, rather wide, tubular por- 

 tion, extending back to the base of the caudal fin, and covered, along 

 the ventral side, with lateral rows of clusters of small follicular 

 glands, which, near the liver, diverge into two, separate, large, lateral 

 clusters ; posteriorly, where the rows of follicles cease, there is a small, 

 firm, bean-shaped, glandular organ, lamellose within (? a gizzard) ; this 

 is followed by a long tubular, or fusiform, more or less saccular stomach 

 and ciiecal appendage, running back nearly to the end of the body ; a 

 constriction at the origin of the caBcal appendage. The testicle 

 is a rather small, slender, lanceolate organ, attached laterally, for its 

 whole length, to the side of the caecal appendage. The prostate 

 gland and vesiciiht; seminales have their usual position, at the base 

 of the left gill, but they are small, and probably not fully developed; 

 the efferent duct extends over and a short distance beyond the base 

 of the gill, and is slender and pointed. The renal organs are very 

 different from those of the common squids [Loligo and Oinrnastre- 

 phes). The posterior part of the anterior vena-cava becomes glandu- 

 lar in front of the heart ; there it parts, sending a long, smooth vein 

 to the base of each gill; there, each of these veins expands into an 

 ovate renal organ, before joining the branchial auricles. 



Family SEPIOLID^E (See p. 367.) 

 During the explorations made by the " Fish Hawk," the present 

 season, we were fortunate in obtaining additional specimens, includ- 

 ing both sexes, of the very interesting and beautiful species described 

 by me in 1878, under the name of Seploki leucoptera. These speci- 

 mens have given me an opportunity to make dissections, which I had 

 not done with the few specimens previously known. These studies 

 show that it has no pen ; that the presence of the remarkably 

 enlaro-ed suckers of the second pair of arms is not confined to the 

 male ; and that this species is the type of a very distinct genus, espe- 

 cially remarkable for being the only known genus, among Myopsidm^ 

 that has round pupils and the eye-lids free all around. In fact, it 

 shows quite conclusively that this division of the Decacera into two 

 groups, based on the presence or absence of free eye-lids, is purely 

 artificial and of little or no systematic value. Therefore the char- 

 acters attributed to the family, SeplolidcB, must be modified to a con- 

 siderable extent, to include this genus. 



In its internal anatomy this genus differs but little from Sepiola^ 

 Heteroteuthis and JRossia, notwithstanding its remarkable divergence 

 in respect to the eyes and pen. Other genera of Sepiola-shaped 



