BORRADAILE—STOMATOPODA. 915 
4, Pseuderichthus distinguendus, Hansen, 1895. (Larva of Pseudosquillu 
oculata.) 
Hansen, Isopoda, &c., of the Plankton Exped. p. 86 (1895); Jurich, ‘ Valdivia’ Stomatopoda, 
p. 394, pl. 38. fig. 5 (1904). 
Besides typical specimens, there are some smaller individuals in which the “ zovea 
spine ” in the middle of the hinder edge of the carapace is wanting, and the rostrum is 
long, far outreaching the antennez, and bearing underneath five thorns. It seems likely 
that these are younger stages of Hansen’s species. Jurich’s specimens measured 27°6 
and 30°7 mm. respectively. Mine are not more than 25 mm. long to the tip of the long 
rostrum. 
Locality. C, 0-1200 fathoms. 
5. Hrichthus (? Pseuderichthus) affinis, n. nom. 
Erichthus sp., Claus, Abh. k. Ges, Wiss. Gott. 1871, p. 36, pl. 6. fig. 23. 
Locality. uw, surface. 
6. Lysierichthus duvaucelli, Guérin. 
Jurich, ‘ Valdivia’ Stomatopoda, p. 393, pl. 26. fig. 7 (1904). 
As Jurich says, the “ zozea spine ” and lateral spines vary greatly in size. 
Locality. C, 0-1200 fathoms ; q, 0-1000 fathoms ; aa, 0-900 fathoms. 
7. Alimerichthus multispinus. 
? Erichthus multispinus, Claus, Abh. k. Ges. Wiss. Gott. 1871, pl. 3. fig. 12. 
Two specimens of a species of Alimerichthus are closely related to that figured by 
Claus, but differ in that the foremost of the spines on the lower edge of the carapace is 
very much larger, and the spines of the hinder angles bear each a small tooth on the 
inner side at about one-third of their length from the base. Claus’s specimen measured 
10 mm. in length. The present measure 12 mm., and have the uropods well developed, 
so that it is probable that they represent a later stage of the same larva. 
Locality. O, 0-180 fathoms; //, 0-750 fathoms. 
8. Alima spinigera, sp. nov. (Plate 22. figs. 4, 4a.) 
Diagnosis —An Alima with the rostrum long, reaching the middle of the antennular 
flagella, with four spines below; the carapace of moderate breadth, bearing on its edge 
four spines, of which the first stands near the fore angle and the rest in the hinder half, 
the spines of the hinder angles reaching the third abdominal segment and hearing below 
a small spine, the “zoza spine,” of moderate length, standing just above the hinder 
edge; the raptorial limbs with three teeth on the claw; the angles of the abdominal 
segments sharp; the exopodites of the uropods with seven spines; and the telson a little 
broader than long, the intermediate spines larger than the submedian. 
There are two specimens, of which the larger, described above, measures 16°5 mm. 
to the end of the rostrum. The smaller, 12'5 mm. long, has a narrower carapace, with 
