LEPTOSTRACA, SCHIZOPODA AND STOMATOPODA. 173 



The colour of the specimen, as preserved, was dark mottled brown with traces of 

 purple on the uropods. The second to the sixth abdominal segments have four small 

 equidistant dark eye-spots. 



The above specimen differs from the type in having only seven teeth instead of 

 eight on the internal margin of the dactylus of the raptorial claw, but its close 

 agreement with it in other characters leaves little doubt that it belongs to the same 

 species. 



0. brevirostris appears to be very closely allied to 0. havanensis, BIGELOW, 1894. 

 The latter has the rostrum more semicircular than 0. brevirostris, and the dactylus 

 of the raptorial claw is more dilated at the base and bears only six teeth on its 

 internal margin. 



The type, and only previously known specimen, of 0. brevirostris, was taken in 

 19 fathoms off Providence Island, Indian Ocean. It is thus an addition to the 

 Stomatopod fauna of Ceylon. 



Protosquilla trispinosa (DANA), var. pulchella, MIERS (1880). 

 Localities : 



Pearl Banks, Gulf of Manaar, February, 1902, 6 to 11 fathoms. Two females, 

 44 and 15 millims. 



South-west of Palk Bay, off Adam's Bridge and Bdmeswaram Island, 7 to 9 fathoms. 

 One female, 38 millims. 



Coral Beefs, Gulf of Manaar. One female, 17 millims. 



This variety differs from the type species mainly in the absence of corrugations on 

 the median portion of the fifth abdominal somite 



An examination of WHITE'S type of Protosquilla trispinosa reveals the presence 

 of a few scattered corrugations on the fourth segment of the abdomen. They are 

 not present in MIERS' type of var. pulchella, nor in any of the Ceylon specimens. 



The two large females in this collection appear to differ from the smaller ones and 

 from MIERS' type in having the tubercles on the sixth abdominal segment much more 

 swollen and without spines. It is possible that the spines on the tubercles are hidden 

 by the general spinulose armature, or they may become obsolete in large examples. 

 The small specimens had the tubercles of the telson very much less densely spinulose 

 than the large ones. 



Distribution : P. trispinosa, var. pulchella is only known from Ceylon (MiERs) 

 and the Indian Archipelago (DE MAN). The type form has also been recorded from 

 Trincomalee, Ceylon, by HENDERSON, and seems to have a wide Indo-Pacific range. 



Protosquilla spinosissima (PFEFFER). Plate II., fig. 19. 



Gonodactylus spinosissimus, PFEFFER, 1889. 

 Localities : 



Coral Beefs, Gulf of Manaar. Six females, 31, 29, 28, 28, 26 and 25 millirns. ; 

 five males, 23, 23, 22, 21 and 20 millims. 



