REPORT ON THE AMPHIPODA. 1461 



Length, at full stretch, one-tenth of an inch. 



Locality.— Station 108, August 27, 1873; off St. Paul's Rocks; lat. 1° 10' N, 

 long. 28° 23' W. ; surface ; surface temperature, 78°. One specimen, female, with eggs. 



Remarks. — The specific name is taken from the place of capture. Bovallius describes 

 a species of this genus, Lycseopsis lindbergi, from " tropical parts of Atlantic," hut it 

 differs from the present in having the joints of the fourth perseopods very dilated, the 

 third joint of that pair longer than the fifth ; the first joint of the fifth perseopods 

 dilated, ovate ; the peduncles of the second uropods shorter than the outer ramus, the 

 coalesced fifth and sixth segments of the pleon longer than the third uropods, and the 

 telson nearly twice as long as the peduncles of those uropods. From Lycseopsis themis- 

 toides, Claus, a specimen of which has been sent me by Dr. Bruce from the neighbourhood 

 of Malta, the present species differs as well by its more diminutive size, as in having 

 the fourth joint of the fourth perseopods shorter instead of longer than the third ; the 

 first joint of the fifth perseopods not quite linear, and shorter than the third, fourth, and 

 fifth joints together ; the composite segment of the pleon not shorter than the third 

 uropods, and in some other particulars. 



Family Typhid^, Dana, 1852. 



Milne-Edwards in 1840 established the " Tribu des Hyperines anormales" for the 

 genera Typhis, Pronoe, and Oxycephalies (see Note on Milne-Edwards, 1840, p. 190). 

 In 1852 Dana established the equivalent family Typhidse, with additional genera 

 distributed among three subfamilies, Typhinae, Pronoinae and Oxycephalinse (see Note 

 on Dana, 1852, p. 259). In 1862 Spence Bate united the first two of these subfamilies 

 to form the family Platyscelidse (see Note on Spence Bate, 1862, p. 337). Claus in 

 1879 adopted the title Platyscelidse as the equivalent of Milne-Edwards' Hyperina 

 anomala, including under it the five families, Typhidse, Scelidae, Pronoidae, Lycseidse, 

 Oxycephalidse (see Note on Claus, 1879, p. 490). Bovallius in 1887 drops the divisional 

 or tribal title Platyscelidse, but retains the five families, naming them respectively 

 Eutyphidse, Parascelidse, Pronoidae, Tryphsenidse, Oxycephalidse (see Note on Bovallius, 

 1887, p. 590). 



The earliest description of any species belonging to this group appears to be that 

 given of Oniscus gibbosus by J. C. Fabricius in 1775 (see Notes on Fabricius, 1775, 

 p. 40, and 1793, p. 59). This species, which was afterwards called Gammarus gibbosus, 

 and which probably belongs to the Pronoidae, is figured in the Banksian Museum among 

 the zoological drawings by Sydney Parkinson in Captain Cook's First Voyage, with the 

 name " Onidium gibbosum, T. 16. P. Sept. 7. 1768." 



For the Eutyphidse Bovallius gives the following diagnosis : — 



