54 
THE VOYAGE OF H.M.S. CHALLENGER. 
Measurements of male specimen from Honolulu. 
In inches and 
decimals. 
In thousandths 
of total length. 
Total length on middle line, from tip of rostrum to edge of telson 
2-13 
Measurements on middle line : — 
Rostrum, ........ 
•12 
56 
Carapace, ........ 
•54 
254 
Carapace, including rostrum, ..... 
•66 
310 
From posterior edge of carapace to posterior edge of third thoracic 
somite, ........ 
T2 
56 
From posterior edge of third to posterior edge of fourth thoracic 
somite, ........ 
•10 
47 
From posterior edge of fourth to posterior edge of fifth thoracic 
somite, ........ 
•10 
47 
First abdominal somite, ... . . 
•16 
75 
Second abdominal somite, ...... 
T6 
75 
Third abdominal somite, ...... 
T6 
75 
Fourth abdominal somite, ...... 
•16 
75 
Fifth abdominal somite, ...... 
•22 
104 
Sixth abdominal somite, ..... 
•14 
66 
Telson on middle line, ...... 
T5 
70 
Total length of hind body, ..... 
1-47 
690 
Total length on middle line, .... 
2-13 
1000 
Greatest length of telson, ...... 
•38 
178 
Width of rostrum, . . 
•20 
94 
Width of carapace at antero-lateral angles, .... 
•32 
150 
Width of carapace (greatest), ...... 
•44 
208 
Width of third thoracic somite, ..... 
•42 
197 
Width of fourth thoracic somite, ..... 
•42 
197 
Width of fifth thoracic somite, ..... 
•42 
197 
Width of first abdominal somite, ... . . 
•46 
216 
Width of second abdominal somite, ..... 
•46 
216 
Width of third abdominal somite, ..... 
•46 
216 
Width of fourth abdominal somite, ..... 
•46 
216 
Width of fifth abdominal somite, ..... 
•46 
214 
Width of sixth abdominal somite between postero-lateral spines, 
•38 
178 
Width of telson (greatest), ...... 
■38 
178 
specimens from St. Thomas ; the specimen from Honolulu has the inner spine of the 
ventral prolongation from the base of the uropod much longer than the outer, while 
the two spines are of equal length in the two specimens from St. Thomas ; in the 
specimens from St. Thomas the postero-lateral angles of the fourth, fifth, and sixth 
abdominal appendages end acutely in spines, while this is the case with the fifth and 
sixth only in the specimen from Honolulu. In all the specimens the lateral lobes 
of the last thoracic somite are bidentate. 
Miers is undoubtedly correct in his decision that v. Marten’s Pseudosquilla stylifera 
from Cuba is a Pseudosquilla ciliata, and it is probable that it ranges very widely over 
