THE STOMATOPODA OF PORTO RICO. 
159 
In the uropods the basal prolongation has an entirely different form, and the segments of the limb show 
marked dissimilarities of shape and proportion. It will be noted that in the form of the telson this 
species closely approaches the genus Pseudosquilla. 
Color . — In the alcoholic specimens there is a well-marked band of pigment on each side extending 
the whole length of the hind-body. These bands are connected by fine transverse lines at the posterior 
margin of each segment. The lobes of the carapace and the posterior part and sides of the telson are 
also pigmented. 
Size . — The two male specimens have the following dimensions in millimeters: 
No. 1. 
No. 2. 
18.5 
22.5 
Length of carapace on mid-line • 
3.5 
4.0 
Length of telson 
2.0 
2. 1 
3 4 
4.2 
Width of fifth‘abdomina.1 segment 
3.5 
4.5 
Fig. 13. Telson and adjacent structures of LysiosquiUa maiaguesensis. Male, camera drawing, x 11; 
bp, basal prolongation of the uropod; en, endopodite; ex, exopodite; p, protopodite; to, sub- 
median spine of the telson; i, intermediate spine; l, lateral spine. 
Locality . — The Fish Hawk took three small specimens (one mutilated) at station 6066 in Mayaguez 
Harbor, with the beam trawl, on a sand and mud bottom, at a depth of 161 to 172 fathoms. 
Life history. — Unknown. 
Genus SQUILLA Fabricius. 
Diagnosis . — “ Stomatopoda having the telson attached to the sixth abdominal segment by a mobile 
joint; the hind-body depressed and wide; the dactylus of the raptorial claw with usually not more 
than 6 teeth; as a rule more than 4 intermediate denticles on the telson, which is usually longer than 
wide; and the inner basal spine of the uropod the longer of the two.” 
Larval form . — An Alima , Leach, having stalked eyes; appendages i to vii and xiv to xvn present 
in earliest stages; a telson generally octagonal in general outline with numerous intermediate denticles; 
the inner basal spine of the uropod longer than the outer; the body greatly elongated; carapace flat- 
tened, elongated, and narrow (width usually about one-fourth the length); usually several thoracic 
segments exposed. 
Squilla intermedia Bigelow. 
Squilla intermedia Bigelow, Johns Hopkins Univ. Circ. 88, 1891; Proc. U. S. Nat. Mus., xvii, p. 530, fig. 19. 
Diagnosis. — A Squilla having very large, nearly T-shaped eyes; very large and strong raptorial 
claws, with 6 teeth upon the dactylus; the rostrum narrowed in front and provided with well-marked 
median and lateral carinre ; 5 strong carinse on the carapace, the median one bifurcated in front and 
