190 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 24 



legs same as carapace but much lighter. Eggs scarlet. Ventral surface 

 same as ambulatory legs. Vinaceous rufous stripes on maxilliped. (Peter- 

 sen, of a live specimen from Guatemala) 



Ecology: "Without doubt, to judge from the structure of the ambu- 

 latory legs and the disposition of the peculiarly ciliated antennae, this 

 species is a burrowing form which remains concealed under the surface 

 of the sand." (Glassell) It has been dredged in depths of 5 to 22 fathoms. 

 Substrates of material examined and that reported by Glassell were as 

 follows: sand, from three stations; sand with shell and sand with mud, 

 from two stations each ; mud, from one station. 



Ovigerous females were taken in January by the Velero III; Glas- 

 sell reported one collected in April. 



Relationships: Eiicerarnus panatelus is closely allied to E. prae- 

 longus Stimpson, 1860, from the western Atlantic. They are alike in 

 having the carapace over twice as long as broad ; movable antennal seg- 

 ments 1 and 2 much broader than the eyestalk; and a long, hairy 

 antennal flagellum. In E. praelongus the center lobe of the front is 

 distinctly longer than the lateral lobes; the orbital margin is slightly 

 more convex than in E. panatelus] the basal segment of the antenna is 

 narrowly in contact with the anterior margin of the carapace, and has 

 a broad inward projection as well ; the flagellum of the antenna is 

 shorter in proportion to the carapace length than in E. panatelus] the 

 propodus and dactylus of walking leg 3 are not modified; and the 

 sternum is broadly triangular anteriorly. 



Range: Bahia Tenacatita, Mexico, south to La Libertad, Ecuador; 

 5 to 22 fathoms. 



Euceramus transversilineatus (Lockington) 

 Plate 36, fig. 2; text-fig. 7(2) 



Porcellana transversilineata Lockington, 1878, pp. 396, 405 (type local- 

 ities, Boca de las Piedras and Bahia de los Angeles, Gulf of Cali- 

 fornia). 



Euceramus transversilineatus, Glassell, 1938a, p. 426, pi. 30 (neotype 

 designated; neotype localities, off N end Isla Tiburon and Punta 

 Penasco, Gulf of California). 



Previous records: Gulf of California. Punta Penasco, Sonora; San 

 Felipe: S. A. Glassell (Glassell). Bahia de los Angeles: (Lockington). 

 Of? N end Isla Tiburon: S. A. Glassell (Glassell). Boca de las Piedras 

 [Estero de las Piedras?], Sinaloa: (Lockington). 



