172 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.5 



an additional spine, or spine and spinules (or denticles) on the inner 

 margin. 



Pseudosquilla, now Hemisquilla, braziliensis (Moreira)*'' is an in- 

 teresting species, inasmuch as it is the Atlantic analogue of the Pacific 

 H. stylifera, p. 1 82. 



Key to Species of Pseudosquilla Known from the 

 Pacific Coast of America 



A^. Basal process of uropod terminating in 2 large spines only, of 

 which the outer is the longer ; inner margin of process otherwise 

 with at most a little offset or low rounded angulation proxi- 

 mal to base of inner of the 2 spines. 



Shorter ramus of last 3 thoracic limbs composed of a single segment. An 

 elongated platelike process arising from dorsal aspect of antenna! pro- 

 topodite. Telson with 4 carinae either side of median crest. Submedian 

 carinae of the 6th abdominal somite dorsally flattened, rounded, ante- 

 riorly wide, each tapering sharply to a strong acute posterior spine over- 

 hanging the telson ; intermediate and lateral spines also present. Eyestalk 

 subtriangular; cornea set transversely on stalk, not overhanging lateral 

 margins, although with median band not bilobed. Rostrum a short, wide, 

 subcordiform plate, anterolateral margins broadly rounded, median 

 spine or point short, subacute. Anterior margin of carapace either side 

 of rostral plate lightly convex, passing directly over into broadly 

 rounded anterolateral angles of carapace. Raptorial dactylus with 3 

 teeth, including terminal one. Body compressed, subcylindrical ; ground 

 color usually quite dark, more or less maculated with numerous medium 

 to small light-colored subcircular spots; maculations on raptorial pro- 

 podus, carpus and merus large oculata, p. 173 



A^. Basal process of uropod composed of 3 sharp spines, of which one 



is much the longest and strongest. 



This may be either the outermost or the middle one of the three. Shorter 

 ramus of last 3 thoracic limbs consisting of 2 segments. No dorsal proc- 

 ess on dorsal aspect of the antennal protopodite. 



B^. Outermost spine of basal process of uropod the largest. 



Telson with 5 well-marked, prominent and entire, nondenticulated 

 carinae either side of median crest. Submedian carinae of 6th ab- 

 dominal somite well marked, strongly keeled, posteriorly long spined ; 

 intermediate and lateral spines also present. Eyestalk subtriangular; 



•*7Lavoura, Bol. Soc. Nac. Agri. Brasileira (N.S.), Vol. 7, p. 60 [5 of sepa- 

 rate], 1903. Arch. Mus. Nac. Rio de Janeiro, Vol. 13, p. 5, pis. 1, 2, 1905 [1906 on 

 cover of separate]. 



