iS 



excavated above, having apparently been crushed. It is therefore with some doubt referred to 

 this species. 



Integument smooth. The carapace with the rostrum is probably 19 mm. long, the abdomen 

 about 35 mm., so that the latter should be slightly longer with regard to the length of the 

 carapace than in older specimens, because, according to Professor Alcock, in an average 

 specimen the median length of the carapace and the rostrum should be 23 mm., of the abdomen 

 38 mm. The rostrum has the same form and length as in the Figure 5 of the "Illustrations", 

 but the low prominence at the base does not exist, the upper margin being quite straight. The 

 upper margin is armed with 1 6 minute teeth, the foremost of which is placed near the apex, 

 there is a larger interspace between the io th and n th tooth, these two teeth being nearly as 

 far distant from one another as the i st from the 3 rd and the 2 nd tooth is one and a half as 

 far distant from the i st as from the 3 rd , while the 3 r d to the 8 th stand closer together; the ii lh 

 tooth is also placed nearer to the i2 th than the following. 



The 5 th abdominal somite, measured along the dorsal border, proves to be 3,5 mm. 

 long, the 6 th 9,25 mm., the proportion being the same as in Fig. 5' of the "Illustrations", the 

 6 th somite appears therefore almost 3-times as long as the 5 th , not twice as long (Alcock, 1. c); 

 it appears also a little less broad (3,5 mm.) in proportion to its length than in the figure of 

 the "Illustrations", owing perhaps to its somewhat younger age. The extremity of the telson 

 is broken off. 



Eyes brown, according to Alcock they are in this species "nearly black". Joints of the 

 antennular peduncle like in Fig. 5 of the "Illustrations", the 2 nd joint being one and a half as 

 long as the 3 rd ; antennular scale reaching to the end of 2 nd joint. 



General distribution: Bay of Bengal, 240 and 609 fathoms (Alcock); Arabian 

 Sea, off the Malabar coast, 172 fathoms, off the Sind coast, 609 — 620 fathoms. 



Leptochela Stimps. 



The genus Leptochela Stimps. includes at present 5 or perhaps 7 species, of which 3 or 

 5 are found in the Indopacific and 2 on the east coast of America. Lept. gracilis Stimps. is 

 found in the seas of Japan, but has also been observed off the west coast of Korea. Lept. 

 robusta Stimps. occurs near the Loo Choo Islands, in the Chinese Sea and in the Indian 

 Archipelago, where this species was obtained by the "Siboga" at no less than fifteen Stations, 

 while it was already known from Ternate; the distribution of this species seems, however, 

 to be much wider, for it has been recorded as well from the Hawaiian Islands as from 

 the Red Sea. Lept. pugtiax de Man, a new species of small size, was captured by this expedition 

 off the Kei-islands and in the Bay of Bima. L^ept. aculeocaudata Paulson is known from the 

 Red Sea and from Djibouti, but is regarded by Dr. Balss as a synonym of Lept. robusta 

 Stimps. A species, finally, described in the Report on the Challenger Macrura under the name 

 of Lept. robusta and 16 specimens of which were taken off East Moncoeur Island, Bass Strait, 

 will perhaps once prove to differ from all other species. Lept. serratorbita Bate, which by 

 its finely serrated or spinulous orbits differs from all the other species, occurs off the Virgin 

 Islands and Porto Rico, while it is also known from Key West. The other species from the 



