1894. 



PnOCEEDINGS OF THE XATIOXAL MUSE CAT. 515 



long axis of the eye stalk. The a uteri »r process of the segment is acute. 

 The lateral processes are Ijroad, Hat, and truncated. 



The first autenn;e etpial in length the distance from the end of the 

 rostrum to the posterior end of tlie thorax. 



The second antenna' reacli to about the base of the flagella of the 

 first pair. The exopodite is small. 



The distal joints of tlie raptorial limb are short. The dactylus has 

 four curved teeth and has a well-marked tubercle on the outer edge close 

 to the articulatiou. T!ie uuiaus bears three movable spiues, the middle 

 one being much the smallest. The cari>us has one blunt spine on the 

 anterior side. 



Thei)rolongation of the basal joint of the uropod is not deeply ser- 

 rated on the inner edge, but simply undulating. The inner process of 

 the i)rolongation is not twice as long as the outer one and bears on its 

 outer side at about tlie middle of its length a very conspicuous rounded 

 tooth. There are five movable spines on the exoiwdite. 



No secondary sexual dift'erences appear. 



Color. — An alcoholic specimen is marked in a way very similar to ^. 

 mantis except on thetelson. There is a dark V-shaped spot at the end 

 of the crest of the telson, and lines of pigment cells follow the line of 

 juts. 



^ize. — The largest specimen is ()..'> cm. in length and the smallest 2.2 

 cm. 



]jOC((Ufij. — All the specimens in the collection were taken by the Alba- 

 tross; two males and one iemale from Santa Rosa Island, California 

 (No. 18494, U.S.N.M.), one small male from ofl' Abreojos Point, Lower 

 Cailforuia (No. 18475, IT.iS.N.M.). 



SQl'ILLA DESMAKESTII, Uis«o. 



SquUld (Ifsmarextii, K'isso, Crnst. dc Nice, p. 114, 1810. — Miehs, Ann. iiud Mag. 

 Nat. Hist. (5) v, p. l'«, 1880. 



There aie two males in the collection from the Channel Islands con- 

 tributed by Edward Lovett, Esq., of London. England (No. 6542, U.S. 

 N.M.). Miers fails to mention the eyes in his description. They are 

 triangular, but small as compared with a specimen of iS. panamensisj for 

 example, of the same size. 



SgUIl.LA AKMATA, Milne- E d w a r d s . 



Sqiiilla armata, ^'Milxe-I^dwakds, Hist. Nat. Crust., ii, p. 521, 1837. — ? Gay, Hist, 

 de Chile, Zool. iJi, Crust., p. I'l'o, 1.S49. — Miers, Ann. and Mag. Nat. Hist. (5) 

 V, p. 26, 1880.— BiGELOW, .Tolius Hopkius Univ. Circ, 88, 1891. 



Diagnosis. — Eyes large, triangular; dactylus of the raptorial limb 

 with seven to nine teeth; rostrum narrowed in front with a slight 

 median elevation; carapace with median carina obsolete or entirely 

 absent, intermediate and lateral carinas present only on the posterior 

 lateral lobes, anterior lateral angles produced into acute spines; lateral 



