1911.] 



NATURAL SCIENCES OF PHILADELPHIA. 



101 



with 11-15 short, broad, squarely truncate teeth, which become 

 nearly or quite obsolete on the lower edge. All the arms except the 

 ventral pair are connected at the base by a very short and thin um- 

 brella. 



Hectocotylization unknown. 



Buccal membrane well-developed, seven-pointed, the four ventral 

 points attached to the arms, but the three dorsal lappets free, except 

 at the base, and armed at the tips with from 5 to 7 minute suckers. 



Tentacles longer than the mantle ; club with four rows of suckers, 

 the two inner the larger, but all becoming subequal and very minute 

 distally ; horny rings of the large median suckers with from 23 to 27 

 rather small acute teeth, much reduced on the lower edge. 



Gladius thin, very deep, with broad expanded wings, very much 

 like L. brevis. 



Fig. 1 . — Lolliguncula (?) panamensis, n. sp. Dorsal and lateral aspects of gladius. 



Chromatophores small, very evenly distributed over the body 

 everywhere except on the under surface of the fins. 



Habitat. — Panama (Hopkins Expedition) ; Guayaquil, Ecuador 

 (P. O. Simons). 



Types in the Museum of Stanford University. 



This is a striking species, differing so prominently from both its 

 congeners in the same region (Loligo gahi d'Orbigny and L. diomedece 

 Hoyle) that special comparison with these is quite unnecessary. It 

 certainly appears nearest to Lolliguncula brevis (Blv.), but the speci- 

 mens bear no spermatophores and hence is my uncertainty as to their 

 true generic position. The general form of the body and relative 

 length of the arms among other features are essentially very similar, 

 but the smaller size of L. brevis, its relatively shorter and more rounded 

 fins, and sparser toothing of the horny rings are characters to be noted. 



My comparison has been with typical L. brevis from the Brazilian 



